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Volumn 219, Issue 2, 2005, Pages 77-83

Martensite decay in micropitted gears

Author keywords

Gears; Martensite decay; Micropitting; Nanoindentation

Indexed keywords

BEARINGS (MACHINE PARTS); CRACK PROPAGATION; DECAY (ORGANIC); ETCHING; MARTENSITE; METALLOGRAPHIC MICROSTRUCTURE; PHASE TRANSITIONS; PITTING; PLASTIC DEFORMATION;

EID: 19844373401     PISSN: 13506501     EISSN: None     Source Type: Journal    
DOI: 10.1243/135065005X9790     Document Type: Article
Times cited : (39)

References (60)
  • 1
    • 1842822390 scopus 로고    scopus 로고
    • Selecting and applying lubricants to avoid micropitting of gear teeth
    • November-December
    • Errichello, R. Selecting and applying lubricants to avoid micropitting of gear teeth. Machi. Lubr. Mag., 2002, November-December, 30-36.
    • (2002) Machi. Lubr. Mag. , pp. 30-36
    • Errichello, R.1
  • 2
    • 85040092743 scopus 로고
    • Micropitting: Its characteristics and implications on the test requirements of gear oils
    • (Eds R. Tourret and E. P. Wright). Proceedings of the International Symposium, The Institute of Petroleum, London
    • Shotter, B. A. Micropitting: its characteristics and implications on the test requirements of gear oils. Performance and Testing of Gear Oils and Transmission Fluids (Eds R. Tourret and E. P. Wright). Proceedings of the International Symposium, The Institute of Petroleum, London, 1980, pp. 91-103.
    • (1980) Performance and Testing of Gear Oils and Transmission Fluids , pp. 91-103
    • Shotter, B.A.1
  • 4
    • 0024092028 scopus 로고
    • The influence of crack face friction and trapped fluid on surface initiated rolling contact fatigue cracks
    • Bower, A. F. The influence of crack face friction and trapped fluid on surface initiated rolling contact fatigue cracks. Trans. ASME - J. Tribol., 1988, 110, 704-711.
    • (1988) Trans. ASME - J. Tribol. , vol.110 , pp. 704-711
    • Bower, A.F.1
  • 5
    • 0021695855 scopus 로고
    • Micropitting and asperity deformation
    • Proceedings of the 10th Leeds-Lyon Symposium on Tribology, Lyon
    • Olver, A. V. Micropitting and asperity deformation. Developments in Numerical and Experimental Methods Applied to Tribology , Proceedings of the 10th Leeds-Lyon Symposium on Tribology, Lyon, 1983, pp. 319-323.
    • (1983) Developments in Numerical and Experimental Methods Applied to Tribology , pp. 319-323
    • Olver, A.V.1
  • 6
    • 0344476981 scopus 로고
    • Effect of roughness ratio and Hertz pressure on micro-pits and spalls in concentrated contacts: Theory and experiments
    • (Ed. D. Dowson) (Mechanical Engineering Publications Ltd., London-Lyon)
    • Berthe, D., Michau, B., Flamand, L., and Godet, M. Effect of roughness ratio and Hertz pressure on micro-pits and spalls in concentrated contacts: theory and experiments. Surface Roughness Effects in Lubrication: Proceedings of 4th Leeds-Lyon Symposium on Tribology (Ed. D. Dowson), 1978, pp. 233-238 (Mechanical Engineering Publications Ltd., London-Lyon).
    • (1978) Surface Roughness Effects in Lubrication: Proceedings of 4th Leeds-Lyon Symposium on Tribology , pp. 233-238
    • Berthe, D.1    Michau, B.2    Flamand, L.3    Godet, M.4
  • 8
    • 0019550429 scopus 로고
    • Some factors influencing the pitting, micro-pitting (frosted areas) and slow speed wear of surface hardened gears
    • Winter, H. and Weiss, T. Some factors influencing the pitting, micro-pitting (frosted areas) and slow speed wear of surface hardened gears. Trans. ASME - J. Mech. Design, 1981, 103, 499-505.
    • (1981) Trans. ASME - J. Mech. Design , vol.103 , pp. 499-505
    • Winter, H.1    Weiss, T.2
  • 9
    • 0020763270 scopus 로고
    • An investigation of surface failure of surface hardened gears by scanning electron microscopy observation
    • Artura, Y., Ueno, T., and Nakanashi, T. An investigation of surface failure of surface hardened gears by scanning electron microscopy observation. Wear, 1983, 87, 305-316.
    • (1983) Wear , vol.87 , pp. 305-316
    • Artura, Y.1    Ueno, T.2    Nakanashi, T.3
  • 10
    • 0024754332 scopus 로고
    • Micropitting in rolling and sliding contact under mixed lubrication
    • Zhou, R. S., Cheng, H. S., and Mura, T. Micropitting in rolling and sliding contact under mixed lubrication. Trans. ASME - J. Tribol., 1989, 111, 605-613.
    • (1989) Trans. ASME - J. Tribol. , vol.111 , pp. 605-613
    • Zhou, R.S.1    Cheng, H.S.2    Mura, T.3
  • 11
    • 0025398812 scopus 로고
    • Influence of lubrication on pitting and micropitting resistance of gears
    • March-April
    • Winter, H. and Oster, P. Influence of lubrication on pitting and micropitting resistance of gears. Gear Technol., 1990, March-April, 16-23.
    • (1990) Gear Technol. , pp. 16-23
    • Winter, H.1    Oster, P.2
  • 12
    • 0029380020 scopus 로고
    • An experimental investigation of micropitting using a roller disk machine
    • Webster, M. N. and Norbart, C. J. J. An experimental investigation of micropitting using a roller disk machine. Tribol. Trans., 1995, 38(4), 883-893.
    • (1995) Tribol. Trans. , vol.38 , Issue.4 , pp. 883-893
    • Webster, M.N.1    Norbart, C.J.J.2
  • 13
    • 4444313143 scopus 로고    scopus 로고
    • Micropitting in case-carburized gears - FZG micropitting test
    • Höhn, B.-R., Oster, P., and Emmert, S. Micropitting in case-carburized gears - FZG micropitting test. VDI Berichte, 1996, 1230, 331-344.
    • (1996) VDI Berichte , vol.1230 , pp. 331-344
    • Höhn, B.R.1    Oster, P.2    Emmert, S.3
  • 15
    • 0032652564 scopus 로고    scopus 로고
    • Effect of material, heat treatment, grinding and shot peening on contact fatigue life of carburised steels
    • Widmark, M. and Melander, A. Effect of material, heat treatment, grinding and shot peening on contact fatigue life of carburised steels. Int. J. Fatigue, 1999, 21, 309-327.
    • (1999) Int. J. Fatigue , vol.21 , pp. 309-327
    • Widmark, M.1    Melander, A.2
  • 16
    • 0034428606 scopus 로고    scopus 로고
    • Contact fatigue of automotive gears: Evolution and effects of residual stresses introduced by surface treatments
    • Batista, A. C., Dias, A. M., Lebrun, J. L., Le Flour, J. C., and Inglebert, G. Contact fatigue of automotive gears: evolution and effects of residual stresses introduced by surface treatments. Fatigue Fract. Eng. Mater. Struct., 2000, 23, 217-228.
    • (2000) Fatigue Fract. Eng. Mater. Struct. , vol.23 , pp. 217-228
    • Batista, A.C.1    Dias, A.M.2    Lebrun, J.L.3    Le Flour, J.C.4    Inglebert, G.5
  • 17
    • 0034193744 scopus 로고    scopus 로고
    • Micropitting resistant industrial gear oils with balanced performance
    • Brechot, P., Cardis, A. B., Murphy, W. R., and Theissen, J. Micropitting resistant industrial gear oils with balanced performance. Ind. Lubr. Tribol., 2000, 52(3), 125-136.
    • (2000) Ind. Lubr. Tribol. , vol.52 , Issue.3 , pp. 125-136
    • Brechot, P.1    Cardis, A.B.2    Murphy, W.R.3    Theissen, J.4
  • 19
    • 0022557911 scopus 로고
    • The residual stress distribution in a plastically deformed model asperity
    • Olver, A. V., Spikes, H. A., Bower, A. F., and Johnson, K. L. The residual stress distribution in a plastically deformed model asperity. Wear, 1986, 107, 151-174.
    • (1986) Wear , vol.107 , pp. 151-174
    • Olver, A.V.1    Spikes, H.A.2    Bower, A.F.3    Johnson, K.L.4
  • 20
    • 14644419158 scopus 로고
    • Metallographic observations of ball bearing fatigue phenomena
    • Jones, A. B. Metallographic observations of ball bearing fatigue phenomena. Proc. ASTM, 1946, 46, 1-6.
    • (1946) Proc. ASTM , vol.46 , pp. 1-6
    • Jones, A.B.1
  • 21
    • 0000014883 scopus 로고
    • Microstructural and residual stress changes in hardened steel due to rolling contact
    • Bush, J. J., Grube, W. L., and Robinson, G. H. Microstructural and residual stress changes in hardened steel due to rolling contact. Trans. ASM, 1961, 54, 390-412.
    • (1961) Trans. ASM , vol.54 , pp. 390-412
    • Bush, J.J.1    Grube, W.L.2    Robinson, G.H.3
  • 22
    • 0343836635 scopus 로고
    • Phase transformations in high-carbon, high-hardness steels under contact loads
    • Gentile, A. J., Jordan, E. F., and Martin, A. D. Phase transformations in high-carbon, high-hardness steels under contact loads. Trans. Met. Soc. AIME, 1965, 233, 1085-1093.
    • (1965) Trans. Met. Soc. AIME , vol.233 , pp. 1085-1093
    • Gentile, A.J.1    Jordan, E.F.2    Martin, A.D.3
  • 23
    • 84996262251 scopus 로고
    • Microstructural alterations of rolling-bearing steel undergoing cyclic stressing
    • September
    • Martin, J. A., Borgese, S. F., and Eberhardt, A. D. Microstructural alterations of rolling-bearing steel undergoing cyclic stressing. Trans. ASME - J. Basic Eng., 1966, September, 555-567.
    • (1966) Trans. ASME - J. Basic Eng. , pp. 555-567
    • Martin, J.A.1    Borgese, S.F.2    Eberhardt, A.D.3
  • 24
    • 0042765929 scopus 로고
    • Cyclic-stress-induced microstructural changes in hardened steel bearings
    • January
    • O'Brien, J. L. and King, A. H. Cyclic-stress-induced microstructural changes in hardened steel bearings. J. Iron Steel Inst., 1966, January, 55.
    • (1966) J. Iron Steel Inst. , pp. 55
    • O'Brien, J.L.1    King, A.H.2
  • 25
    • 84991267999 scopus 로고
    • Electron microscopy of stress-induced structural alterations near inclusions in bearing steels
    • September
    • O'Brien, J. L. and King, A. H. Electron microscopy of stress-induced structural alterations near inclusions in bearing steels. Trans. ASME - J. Basic Eng., 1966, September, 568-588.
    • (1966) Trans. ASME - J. Basic Eng. , pp. 568-588
    • O'Brien, J.L.1    King, A.H.2
  • 26
    • 0041471952 scopus 로고
    • An analysis of microstructural changes in 52100 steel bearings during cyclic stressing
    • Buchwald, J. and Heckel, R. W. An analysis of microstructural changes in 52100 steel bearings during cyclic stressing. Trans. ASM, 1968, 61, 750-756.
    • (1968) Trans. ASM , vol.61 , pp. 750-756
    • Buchwald, J.1    Heckel, R.W.2
  • 27
    • 0016596264 scopus 로고
    • Phase transformations and residual stress changes in steel rolls during contact fatigue
    • Swahn, H., Hellner, L., Andersson, C. G., Zetterlund, B., and Vingsbo, O. Phase transformations and residual stress changes in steel rolls during contact fatigue. Scand. J. Metall., 1975, 4 , 263-266.
    • (1975) Scand. J. Metall. , vol.4 , pp. 263-266
    • Swahn, H.1    Hellner, L.2    Andersson, C.G.3    Zetterlund, B.4    Vingsbo, O.5
  • 28
    • 0016984018 scopus 로고
    • Modifications structurales provoquées par la fatigue des contact dans des roulements à billes
    • Becker, P. C., Swahn, H., and Vingsbo, O. Modifications structurales provoquées par la fatigue des contact dans des roulements à billes. Mecanique, Materiaux, Electricité, 1976, 320/321, 8-14.
    • (1976) Mecanique, Materiaux, Electricité , vol.320-321 , pp. 8-14
    • Becker, P.C.1    Swahn, H.2    Vingsbo, O.3
  • 29
    • 0016985313 scopus 로고
    • Martensite decay during rolling contact fatigue in ball bearings
    • Swahn, H., Becker, P. C., and Vingsbo, O. Martensite decay during rolling contact fatigue in ball bearings. Metall. Trans., 1976, 7A, 1099-1110.
    • (1976) Metall. Trans. , vol.7 A , pp. 1099-1110
    • Swahn, H.1    Becker, P.C.2    Vingsbo, O.3
  • 30
    • 0016907581 scopus 로고
    • Electron-microscope studies of carbide decay during contact fatigue in ball bearings
    • January
    • Swahn, H., Becker, P. C., and Vingsbo, O. Electron-microscope studies of carbide decay during contact fatigue in ball bearings. Metal Sci., 1976, January, 35-39.
    • (1976) Metal Sci. , pp. 35-39
    • Swahn, H.1    Becker, P.C.2    Vingsbo, O.3
  • 31
    • 51249180094 scopus 로고
    • Phase changes in fatigued ball bearings
    • Österlund, R. and Vingsbo, O. Phase changes in fatigued ball bearings. Metall. Trans., 1980, 11A, 701-707.
    • (1980) Metall. Trans. , vol.11 A , pp. 701-707
    • Österlund, R.1    Vingsbo, O.2
  • 32
    • 0018919162 scopus 로고
    • Gradual changes in residual stress and microstructure during contact fatigue in ball bearings
    • January
    • Voskamp, A. P., Österlund, R., Becker, P. C., and Vingsbo, O. Gradual changes in residual stress and microstructure during contact fatigue in ball bearings. Metals Technol., 1980, January, 14-21.
    • (1980) Metals Technol. , pp. 14-21
    • Voskamp, A.P.1    Österlund, R.2    Becker, P.C.3    Vingsbo, O.4
  • 33
    • 0020266778 scopus 로고
    • 2(1/2)D transmission electron microscopy applied to phase transformations in ball bearings
    • Lindhal, E. and Österlund, R. 2(1/2)D transmission electron microscopy applied to phase transformations in ball bearings. Ultramicroscopy, 1982, 9, 355-364.
    • (1982) Ultramicroscopy , vol.9 , pp. 355-364
    • Lindhal, E.1    Österlund, R.2
  • 34
    • 0006752817 scopus 로고
    • Characterisation of microstructure and its effect on rolling contact fatigue of induction hardened medium carbon bearing steels
    • Choi, B. Y. and Bahng, G. W. Characterisation of microstructure and its effect on rolling contact fatigue of induction hardened medium carbon bearing steels. Mater. Sci. Technol., 1985, 14, 816-821.
    • (1985) Mater. Sci. Technol. , vol.14 , pp. 816-821
    • Choi, B.Y.1    Bahng, G.W.2
  • 35
    • 0022093990 scopus 로고
    • Material response to rolling contact loading
    • Voskamp, A. P. Material response to rolling contact loading. Trans. ASME - J. Tribol., 1985, 107, 359-366.
    • (1985) Trans. ASME - J. Tribol. , vol.107 , pp. 359-366
    • Voskamp, A.P.1
  • 36
    • 0025459045 scopus 로고
    • Rolling contact deformation, etching effects, and failure of high-strength bearing steel
    • Bhargava, V., Hahn, G. T., and Rubin, C. A. Rolling contact deformation, etching effects, and failure of high-strength bearing steel. Metall. Trans., 1990, 21A, 1921-1931.
    • (1990) Metall. Trans. , vol.21 A , pp. 1921-1931
    • Bhargava, V.1    Hahn, G.T.2    Rubin, C.A.3
  • 37
    • 0029345648 scopus 로고
    • Analysis of rolling contact fatigued microstructure using focused ion beam sputtering and transmission electron microscopy observation
    • Muroga, A. and Saka, H. Analysis of rolling contact fatigued microstructure using focused ion beam sputtering and transmission electron microscopy observation. Scripta Metall. Mater., 1995, 33(1), 151-156.
    • (1995) Scripta Metall. Mater. , vol.33 , Issue.1 , pp. 151-156
    • Muroga, A.1    Saka, H.2
  • 38
    • 0030288303 scopus 로고    scopus 로고
    • Crystalographic preferred orientation induced by cyclic rolling loading
    • Voskamp, A. P. and Mitemeijer, E. J. Crystalographic preferred orientation induced by cyclic rolling loading. Metall. Mater. Trans., 1996, 27(A), 3445-3465.
    • (1996) Metall. Mater. Trans. , vol.27 A , pp. 3445-3465
    • Voskamp, A.P.1    Mitemeijer, E.J.2
  • 39
    • 0031120166 scopus 로고    scopus 로고
    • The effect of changing microstructure on the fatigue behaviour during cyclic rolling contact loading
    • Voskamp, A. P. and Mitemeijer, E. J. The effect of changing microstructure on the fatigue behaviour during cyclic rolling contact loading. Z. Metallkunde, 1997, 88(4), 310-320.
    • (1997) Z. Metallkunde , vol.88 , Issue.4 , pp. 310-320
    • Voskamp, A.P.1    Mitemeijer, E.J.2
  • 40
    • 0032048324 scopus 로고    scopus 로고
    • Fatigue and material response in rolling contact
    • ASTM STP 1327
    • Voskamp, A. P. Fatigue and material response in rolling contact. ASTM STP 1327, 1998, pp. 152-166.
    • (1998) , pp. 152-166
    • Voskamp, A.P.1
  • 41
    • 14644416753 scopus 로고    scopus 로고
    • Analysis of micro-pitting on prototype surface fatigue test gears
    • Hoeprich, M. R. Analysis of micro-pitting on prototype surface fatigue test gears. Tech. Akad. Essling., 2000, 3, 2023-2033.
    • (2000) Tech. Akad. Essling. , vol.3 , pp. 2023-2033
    • Hoeprich, M.R.1
  • 42
    • 14644400019 scopus 로고
    • White etching areas on case-hardened gears
    • September-October
    • Winter, H., Knauer, G., and Gamel, J. J. White etching areas on case-hardened gears. Gear Technol., 1989, September-October , 18-45.
    • (1989) Gear Technol. , pp. 18-45
    • Winter, H.1    Knauer, G.2    Gamel, J.J.3
  • 43
    • 0023382713 scopus 로고
    • Wear mechanisms and finite element crack propagation analysis of high speed roller bearings
    • Tunca, N. and Laufer, E. E. Wear mechanisms and finite element crack propagation analysis of high speed roller bearings. Wear, 1987, 118, 77-97.
    • (1987) Wear , vol.118 , pp. 77-97
    • Tunca, N.1    Laufer, E.E.2
  • 44
    • 14644416162 scopus 로고    scopus 로고
    • Micropitting and related phenomena in case carburised gears
    • PhD thesis, University of Newcastle
    • Oila, A. Micropitting and related phenomena in case carburised gears. PhD thesis, University of Newcastle, 2003, p. 262.
    • (2003) , pp. 262
    • Oila, A.1
  • 45
    • 14644416509 scopus 로고    scopus 로고
    • Assessment of the factors influencing micropitting in rolling/sliding contacts
    • in press
    • Oila, A. and Bull, S. J. Assessment of the factors influencing micropitting in rolling/sliding contacts. Wear, in press.
    • Wear
    • Oila, A.1    Bull, S.J.2
  • 46
    • 0026817433 scopus 로고
    • Developments in the production of engineering steels - The advantages for gear manufacturers from secondary steelmaking
    • Cristenacce, M. Developments in the production of engineering steels - the advantages for gear manufacturers from secondary steelmaking. Mater. Des. 1992, 13, 33-38.
    • (1992) Mater. Des. , vol.13 , pp. 33-38
    • Cristenacce, M.1
  • 47
  • 48
    • 19844368233 scopus 로고    scopus 로고
    • Fuels Lubricants and Associated Products. Ministry of Defence Standard 01-5, January
    • Fuels, Lubricants and Associated Products. Ministry of Defence Standard 01-5, January, 2002.
    • (2002)
  • 49
    • 0026875935 scopus 로고
    • An improved technique for determining hardness and elastic modulus using load and displacement sensing indentation experiments
    • Oliver, W. C. and Pharr, G. M. An improved technique for determining hardness and elastic modulus using load and displacement sensing indentation experiments. J. Mater. Res., 1992, 7(6), 1564-1583.
    • (1992) J. Mater. Res. , vol.7 , Issue.6 , pp. 1564-1583
    • Oliver, W.C.1    Pharr, G.M.2
  • 50
    • 1342342572 scopus 로고    scopus 로고
    • Nanoindentation testing of gear steels
    • Oila, A. and Bull, S. J. Nanoindentation testing of gear steels. Z. Metallkunde, 2003, 94(7), 793-797.
    • (2003) Z. Metallkunde , vol.94 , Issue.7 , pp. 793-797
    • Oila, A.1    Bull, S.J.2
  • 51
    • 0001311057 scopus 로고
    • On white etching band formation in rolling bearings
    • Polonsky, I. A. and Keer, L. M. On white etching band formation in rolling bearings. J. Mech. Phys. Solids, 1995, 43 (4), 637-669.
    • (1995) J. Mech. Phys. Solids , vol.43 , Issue.4 , pp. 637-669
    • Polonsky, I.A.1    Keer, L.M.2
  • 52
    • 85040901861 scopus 로고
    • Formation of shear bands in ball-bearing races
    • Technical report CUED/C-MECH/TR, 42, Department of Engineering, University of Cambridge
    • Johnson, K. L. Formation of shear bands in ball-bearing races. Technical report CUED/C-MECH/TR, 42, Department of Engineering, University of Cambridge, 1988, p. 22.
    • (1988) , pp. 22
    • Johnson, K.L.1
  • 53
    • 0020022737 scopus 로고
    • Butterflies in fatigued ball bearings - Formation mechanisms and structure
    • Österlund, R., Vingsbo, O., Vincent, L., and Guiraldenq, P. Butterflies in fatigued ball bearings - formation mechanisms and structure. Scand. J. Metall., 1982, 11, 23-32.
    • (1982) Scand. J. Metall. , vol.11 , pp. 23-32
    • Österlund, R.1    Vingsbo, O.2    Vincent, L.3    Guiraldenq, P.4
  • 54
    • 84981461436 scopus 로고
    • Propagation of contact fatigue from surface and subsurface origins
    • September
    • Littman, W. E. and Widner, R. L. Propagation of contact fatigue from surface and subsurface origins. Trans. ASME - J. Basic Eng., 1966, September, 624-636.
    • (1966) Trans. ASME - J. Basic Eng. , pp. 624-636
    • Littman, W.E.1    Widner, R.L.2
  • 56
    • 0032193982 scopus 로고    scopus 로고
    • Modelling of crack growth under cyclic contact loading
    • Glodež, S. and Ren, Z. Modelling of crack growth under cyclic contact loading. Theor. Appl. Fract. Mech., 1998, 30, 159-173.
    • (1998) Theor. Appl. Fract. Mech. , vol.30 , pp. 159-173
    • Glodež, S.1    Ren, Z.2
  • 57
    • 0033207684 scopus 로고    scopus 로고
    • Surface fatigue of gear teeth flanks
    • Glodež, S., Ren, Z., and Flašker, J. Surface fatigue of gear teeth flanks. Comput. Struct., 1999, 73, 475-483.
    • (1999) Comput. Struct. , vol.73 , pp. 475-483
    • Glodež, S.1    Ren, Z.2    Flašker, J.3
  • 58
    • 0035419107 scopus 로고    scopus 로고
    • Computational modelling of the surface fatigue crack growth on gear teeth flanks
    • Glodež, S., Ren, Z., and Fajdiga, G. Computational modelling of the surface fatigue crack growth on gear teeth flanks. Commun. Numer. Meth. Eng., 2001, 17, 529-541.
    • (2001) Commun. Numer. Meth. Eng. , vol.17 , pp. 529-541
    • Glodež, S.1    Ren, Z.2    Fajdiga, G.3
  • 59
    • 0036746449 scopus 로고    scopus 로고
    • Surface initiated crack growth simulation in moving lubricated contact
    • Ren, Z., Glodež, S., Fajdiga, G., and Ulbin, M. Surface initiated crack growth simulation in moving lubricated contact. Theor. Appl. Fract. Mech., 2002, 38, 141-149.
    • (2002) Theor. Appl. Fract. Mech. , vol.38 , pp. 141-149
    • Ren, Z.1    Glodež, S.2    Fajdiga, G.3    Ulbin, M.4


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