Solute concentration dependence of strength and plastic instabilities in Al-Mg alloys

Journal of Materials Research

Volumn 20, Issue 2, 2005, Pages 331-337

  Horvath Gy ^a   Chinh, N Q ^a   Lendvai, J ^a  

^a EÖTVÖS LORÁND UNIVERSITY   (Hungary)

Author keywords

[No Author keywords available]

Indexed keywords

AGING OF MATERIALS; BINARY ALLOYS; INDENTATION; MATHEMATICAL MODELS; MICROHARDNESS; NUMERICAL ANALYSIS; PLASTIC DEFORMATION; SOLID SOLUTIONS; STRAIN; STRENGTH OF MATERIALS;

ALUMINUM MAGNESIUM ALLOYS; DYNAMIC MICROINDENTATION; DYNAMIC STRAIN AGING (DSA); MICROHARDNESS DROPS; PLASTIC INSTABILITIES; SOLUTE CONCENTRATION; STRAIN AGING;

ALUMINUM ALLOYS;

EID: 28144446246     PISSN: 08842914     EISSN: None     Source Type: Journal    
DOI: 10.1557/JMR.2005.0040     Document Type: Article

References (39)

1. Ch. Schwink and A. Nortmann: The present experimental knowledge of dynamic strain ageing in binary f.c.c, solid solutions. Mater. Sci. Eng. A 234-236, 1 (1997).
2. M. Zaiser and P. Hähner: Oscillatory modes of plastic deformation: Theoretical concepts. Phys. Stat. Sol. 199, 267 (1997).
3. D. Thevenet, M. Mliha-Touati, and A. Zeghloul: The effect of precipitation on the Portevin-Le Chatelier effect in an Al-Zn-Mg-Cu alloy. Mater. Sci. Eng. A 266, 175 (1999).
4. E. Pink and A. Grinberg: Stress drops in serrated flow curves of A15Mg. Acta Metall. 30, 2153 (1982).
5. P.G. McCormick, S. Venkadesan, and C.P. Ling: Propagative instabilities: An experimental view. Scripta Metall. Mater. 29, 1159 (1993).
6. Zs. Kovács, J. Lendvai, and G. Vörös: Localized deformation bands in Portevin-Le Châtelier plastic instabilities at a constant stress rate. Mater. Sci. Eng. A 279, 179 (2000).
7. P.G. McCormick: The Portevin-Le Chatelier effect in an Al-Mg-Si alloy loaded in torsion. Acta Metall. 30, 2079 (1982).
8. Zs. Kovács, N.Q. Chinh, J. Lendvai, and G. Vörös: Portevin-Le Châtelier type plastic instabilities in depth sensing macroindentation. Mater. Sci. Eng. A 325, 255 (2002).
9. G. Bérces, N.Q. Chinh, A. Juhász, and J. Lendvai: Occurrence of plastic instabilities in dynamic microhardness testing. J. Mater. Res. 13, 1411 (1998).
10. G. Bérces, N.Q. Chinh, A. Juhász, and J. Lendvai: Kinematic analysis of plastic instabilities occurring in microhardness tests. Acta Mater. 46, 2029 (1998).
11. N.Q. Chinh, F. Csikor, Zs. Kovács, and J. Lendvai: Critical concentration of Mg addition for plastic instabilities in Al-Mg alloys. J. Mater. Res. 15, 1037 (2000).
12. N.Q. Chinh, Gy. Horváth, Zs. Kovács, and J. Lendvai: Characterization of plastic instability steps occurring in depth-sensing indentation tests. Mater. Sci. Eng. A 324, 219 (2002).
13. Gy. Bérces, J. Lendvai, A. Juhász, and N.Q. Chinh: Dynamic characterization of Portevin-Le Chatelier instabilities occurring in depth-sensing microhardness tests. J. Mater. Res. 18, 2874 (2003).
14. N.Q. Chinh, J. Gubicza, Zs. Kovács, and J. Lendvai: Depth-sensing indentation tests in studying plastic instabilities. J. Mater. Res. 19, 31 (2004).
15. Y.M. Golovin, V.I. Ivolgin, M.A. Lebedkin, and D.A. Sergunin: Rate and scale dependence of the parameters of the unstable plastic flow during dynamic nano- and microindentation of an Al-2.7% Mg alloy. Phys. Met. Metall. 97, 220 (2004).
16. A. van den Beukel: Theory of the effect of dynamic strain ageing on mechanical properties. Phys. Stat. Sol. (a) 30, 197 (1975).
17. P. Penning: Mathematics of the Portevin-le Chatelier effect. Acta Metall. 20, 1169 (1972).
18. L.P. Kubin and Y. Estrin: The Portevin-Le Chatelier effect in deformation with constant stress rate. Acta Metall. 33, 397 (1985).
19. L.P. Kubin, K. Chibab, and Y. Estrin: The rate dependence of the Portevin-Le Chatelier effect. Acta Metall. 36, 2707 (1988).
20. L.P. Kubin and Y. Estrin: Evolution of dislocation densities and the critical conditions for the Portevin-Le Châtelier effect. Acta Metall. Mater. 38, 697 (1990).
21. Y. Brechet and Y. Estrin: On the influence of precipitation on the Portevin-Le Chatelier effect. Acta Metall. Mater. 43, 955 (1995).
22. P.G. McCormick: Theory of flow localization due to dynamic strain ageing. Acta Metall. 36, 3061 (1988).
23. A.H. Cottrell: A note on the Portevin-Le Chatelier effect. Philos. Mag. 44, 829 (1953).
24. P.G. McCormick: A model for the Portevin-Le Chatelier effect in substitutional alloys. Acta Metall. 20, 351 (1972).
25. N. Louat: On the theory of the Portevin-Le Chatelier effect. Scripta Metall. 15, 1167 (1981).
26. N. Louat: On the thermal activation of dislocation motion through random point obstacles. Acta Metall. 26, 1597 (1978).
27. M. Lebyodkin, Y. Brechet, Y. Estrin, and L. Kubin: Statistical behavior and strain localization patterns in the Portevin-Le Chatelier effect. Acta. Mater. 44, 4531 (1996).
28. P. Hähner: On the critical conditions of the Portevin-Le Châtelier effect. Acta Mater. 45, 3695 (1997).
29. P. Hähner: On the physics of the Portevin-Le Châtelier effect part 1: The statistics of dynamic strain ageing. Mater. Sci. Eng. A 207, 208 (1996).
30. P. Hähner: On the physics of the Portevin-Le Châtelier effect part 1: From microscopic to macroscopic behavior. Mater. Sci. Eng. A 207, 216 (1996).
31. F. Springer and Ch. Schwink: Quantitative investigations on dynamic strain ageing in polycrystalline CuMn alloys. Scripta Metall. Mater. 25, 2739 (1991).
32. C.P. Ling and P.G. McCormick: The effect of temperature on strain rate sensitivity in an Al-Mg-Si alloy. Acta Metall. Mater. 41, 3127 (1993).
33. R. Labusch: Statistical theories of solid solution hardening. Acta Metall. 20, 917 (1972).
34. F.R.N. Nabarro: Theory of solution hardening. Philos. Mag. 35, 613 (1977).
35. J. Friedel: Dislocations (Pergamon Press, New York, 1964), p. 644.
36. D. Tabor: Indentation hardness and its measurement: Some cautionary comments, in Microindentation Techniques in Materials Science and Engineering (ASTM STP 889, 1986) p. 129.
37. F.B. Klose, A. Ziegenbein, F. Hagemann, H. Neuhäuser, P. Hähner, M. Abbadi, and A. Zeghtoul: Analysis of Portevin-Le Chatelier serrations of type B in Al-Mg. Mater. Sci. Eng. A 369, 76 (2004).
38. R.C. Picu: A mechanism for the negative strain-rate sensitivity of dilute solid solutions. Acta Mater. 52, 3447 (2004).
39. R.C. Picu and D. Zhang: Atomistic study of pipe diffusion in Al-Mg alloys. Acta Mater. 52, 161 (2004).