Effect of vacancies on the tensile properties of Fe-40Al single crystals in air and vacuum

Materials Characterization

Volumn 42, Issue 2, 1999, Pages 161-167

  Yang, Y ^a   Baker, I ^a   George, E P ^b  

^a DARTMOUTH COLLEGE   (United States)

^b OAK RIDGE NATIONAL LABORATORY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

AIR; CRYSTAL DEFECTS; FRACTURE MECHANICS; FRACTURE TOUGHNESS; SINGLE CRYSTALS; TENSILE PROPERTIES; TENSILE TESTING; VACUUM TECHNOLOGY;

VACANCY CONCENTRATIONS;

IRON ALLOYS;

EID: 0032621484     PISSN: 10445803     EISSN: None     Source Type: Journal    
DOI: 10.1016/s1044-5803(98)00049-7     Document Type: Article

References (23)

1. I. Baker and P. R. Munroe: The mechanical properties of FeAl. Int. Mater. Rev. 42:181-205 (1997).
2. N. S. Stoloff and C. T. Liu: Environmental embrittlement of iron aluminides. Intermetallics 2:75-87 (1994).
3. E. P. George, and C. T. Liu: Review of environmental effects in intermetallics. Proc. Int. Conf. on High-Temperature Ordered Intel-metallic Alloys VI, Boston, MA (November 28-December 1, 1994).
4. I. Baker and P. Nagpal: A review of the flow and fracture of FeAl. Proc. Int. Symp. on Structural Intermetallics. R. Darolia, J. J. Lewandowski, C. T. Liu, P. L. Martin, D. B. Miracle, and M. V. Nathal, eds. TMS Warrandale, PA, USA, pp. 463-473 (1993).
5. C. T. Liu, E. H. Lee, and C. G. McKamey: An environmental effect as the major cause for room-temperature embrittlement in FeAl. Scripta Metall. Mater. 23:875-880 (1989).
6. 3Al. Scripte Metall. Mater. 24:385-390 (1990).
7. D. J. Gaydosh and M. V. Nathal: Influence of testing environment on the room temperature ductility of FeAl alloys. Scripta Metall. Mater. 24:1281-1284 (1990).
8. D. J. Gaydosh, S. L. Draper, R. D. Noebe, and M. V. Nathal: Room temperature flow and fracture of Fe-40at.% Al alloys. Mater. Sci. Eng. A150:7-20 (1992).
9. M. V. Nathal and C. T. Liu: Intrinsic ductility of FeAl single crystals. Intermetallics 3:77-81 (1995).
10. P. Specht and P. Neumann: Fracture planes and toughness of stoichiometric FeAl single crystals. Intermetallics 3:365-368 (1995).
11. R. J. Lynch, K. A. Gee, and L. A. Heldt: Environmental embrittlement of single crystal and thermomechanically processed B2-ordered iron aluminides. Scripta Metall. Mater. 30:945-950 (1994).
12. E. P. George and I. Baker: A model for the temperature dependence of the yield strength of FeAl. Phil. Mag. A A77:737-750 (1998).
13. P. R. Munroe and I. Baker: Observation of dislocations and a mechanism for transgranular fracture on {001} in FeAl. Acta Metall. Mater. 39:1011-1017 (1991).
14. Y. A. Chang, L. M. Pike, C. T. Liu, A. R. Bilbrey, and D. S. Stone: Correlation of the hardness and vacancy concentration in FeAl. Intermetallics 1: 107-115 (1993).
15. K. Yoshimi, S. Hanada, and H. Tokuno: Effect of frozen-in vacancies on hardness and tensile properties of polycrystalline B2 FeAl. Mater. Trans. JIM 35:51-57 (1994).
16. H. E. Schaefer, B. Damson, M. Weller, E. Arzt, and E. P. George: Thermal vacancies and high-temperature mechanical properties of FeAl. Phys. Stat. Sol. A160531-540 (1997).
17. H. Xiao and I. Baker: The relationship between point defects and mechanical properties in FeAl at room temperature. Acta Metall. Mater. 43:391-396 (1995).
18. R. L. Fleischer: Substitutional solution hardening. Acta Metall. 11:203-209 (1963).
19. Y. Yang and I. Baker: The influence of vacancy concentration on the yield and flow behavior of FeAl. Intermetallics 6:167-175 (1998).
20. P. Nagpal and I. Baker: Effect of cooling rate on hardness of FeAl and NiAl. Metall. Trans. A21: 2281-2282 (1990).
21. 3Al. Phil. Mag. A63:319-335 (1991).
22. I. Baker and J. A. Horton: In situ straining of Fe-Al in a transmission electron microscope. Phil. Mag. A67:479-489 (1993).
23. J. P. Hirth: Crack nucleation in glide plane decohesion and shear band separation. Scripta Metall. Mater. 28:703-707 (1993).