|
|
|
| Simulation of thermal exposure effect on under–aged Al–Cu–Mg–Ag alloys |
| HOU Yanhui 1;2;3 ; LIU Zhiyi 1;2 ; XIA Qingkun1;2 ; LI Yuntao1;2; LIU Yanbin 1;2 |
1.Key Laboratory of Nonferrous Metal Materials Science and Engineering; Ministry of Education; Central South University; Changsha 410083
2.School of Materials Science and Engineering; Central South University; Changsha 410083
3.School of Mechanics and Engineering; Southwest Jiaotong University; Chengdu 610031 |
|
Cite this article:
HOU Yanhui LIU Zhiyi XIA Qingkun LI Yuntao LIU Yanbin . Simulation of thermal exposure effect on under–aged Al–Cu–Mg–Ag alloys. Chin J Mater Res, 2009, 23(5): 550-556.
|
|
|
Abstract A model for the interfacial energy between the Ω–phase precipitation and matrix was established by both the model prediction and experimental result fitting. Based on the pseudo–binary assumption and classical nucleation and growth theories, a physical model for thermodynamic precipitation was also developed, and by which, the microstructural evolution and tension yield strength of the underaged Al–Cu–Mg–Ag alloy were predicted. The results indicated that the results predicted are in good agreement with the experimental data.
|
|
Received: 28 November 2008
|
|
|
| Fund: Supported by National Key Basic Research and Development Program of China No.2005CB623705–04 and Program of the Domestic Exchange PhD Student of Central South University, Ministry of Education, No.1810-752300020. |
| 1 Y.G.Li, P.A.Blenkinsop, M.H.Loretto, N.A.Walker, Structure and stability of precipitates in 500 exposed Ti–25V–15Cr–xAl alloys, Acta Mater., 46, 5777(1998)
2 O.Rios, S.Goyel, M.S.Kesler, D.M.Cupid, H.J.Seifert, F.Ebrahimi, An evaluation of high–temperature phase stability in the Ti–Al–Nb system, Scripta Materialia, 60, 156(2008)
3 M.Thomas, T.Lindley, M.Jackson, The microstructural response of a peened near–α titanium alloy to thermal exposure, Scripta Materialia, 60, 108(2008)
4 Y.B.Liu, Z.Y.Liu, Y.T.Li, Q.K.Xia, J.Zhou, Enhanced fatigue crack propagation resistance of an Al–Cu–Mg alloy by artificial aging, Mater. Sci. Eng. A, 492, 333(2008)
5 C.R.Hutchinson, X.Fan, S.J.Pennycook, G.J.Shiflet, On the origin of the high coarsening resistance of Ω plates in Al–Cu–Mg–Ag Alloys, Acta Materialia, 49, 2827(2001)
6 S.P.Ringer, W.Yeung, B.C.Muddle, I.J.Polmear, Precipitate stability in Al–Cu–Mg–Ag alloys aged at high temperatures, Acta Metall. Mater., 42, 1715(1994)
7 K.Hono, N.Sano, S.S.Babu, R.Okano, T.Sakurai, Characterization of the precipitation in Al–Li–Cu–Mg–(Mn, Zr) alloys, Acta Metall. Mater., 41, 829(1993)
8 M.Murayama, K.Hono, Pre–precipitate clusters and precipitation processes in Al–Mg–Si alloys, Scripta Mater., 38, 1315(1998)
9 L.Reich, M.Murayama, K.Hono, Evolution of Ω phase in an Al–Cu–Mg–Ag alloy–a three–dimensional atom probe study, Acta Mater., 46, 6053(1998)
10 S.P.Ringer, I.J.Polmear, T.Sakurai, Effect of additions of Si and Ag to ternary Al–Cu–Mg alloys in the α+ S phase field, Mater. Sci. Eng. A, 217, 273(1996)
11 R.Ferragut, A.Dupasquier, C.E.Macchi, Vacancy–solute interactions during multiple–step ageing of an Al–Cu–Mg– Ag alloy, Scripta Mater., 60, 137(2009)
12 R.Kampmann, R.Wagner, Phase Transformations in Materials, Mater. Sci. Technol., 5, 213(1991)
13 M.Volmer, A.Z.Weber, Keimbildung inubersattigten gebilden, Phys. Chem., 119, 277(1926)
14 K.C.Russell, Nucleation in solids: the induction and steady state effects, Adv. Colloid Interface Sci., 13, 205(1980)
15 C.Zener, Theory of growth of spherical precipitates from solid solution, J. Appl. Phys., 20, 95(1949)
16 H.B.Aaron, D.Fainstain, G.R.Kotler, Diffusion–limited phase transformations: A comparison and critical evaluation of the mathematical approximations, J. Appl. Phys., 41, 4404(1970)
17 A.Deschamps, Y.Brechet, Influence of predeformation and ageing of an Al–Zn–Mg alloy–II. Modeling of precipitation kinetics, Acta Mater., 47, 293(1999)
18 I.M.Lifshitz, V.V.Slyozov, The kinetics of precipitation from supersaturated solid solutions, J. Phys. Chem. Solids, 19, 35(1961)
19 LIU Gang, DING Xiangdong, SUN Jun, CHEN Kanghua, A model for age strengthening of plate–like–precipitate–containing Al alloys, The Chinese Journal of Nonferrous Metals, 11(3), 6(2001)
(刘 刚, 丁向东, 孙军, 陈康华, 具有盘状析出相铝合金的时效强化模型, 中国有色金属学报, 11(3), 6(2001))
20 C.Genevois, A.Deschamps, A.Denquin, B.D.Cottignies, Quantitative investigation of precipitation and mechanical behaviour for AA2024 friction stir welds, Acta Mater., 53, 2447(2005)
21 E.Nembach, Particle strengthening of metals and alloys, Acta Mater., 40, 3325(1992)
22 F.King, Aluminum and Its Alloys (Chichester, Ellis Horwood Limited, 1987)
23 M.Beyeler, M.Maurice, R.Seguin, Contribution to the study of hetero–diffusion in aluminium, Mem. Sci. Rev. Metall., 67, 295(1970)
24 J.D.Boyd, R.B.Nicholson, The coarsening behavior of theta double prime and theta prime precipitates in two Al–Cu alloys, Acta Mater., 19, 1101(1971)
25 H.Hargarter, M.T.Lyttle, E.A.Starke, Effects of preferentially aligned precipitates on plastic anisotropy in Al–Cu– Mg–Ag and Al–Cu alloys, Mater. Sci. Eng. A., 257, 87(1998)
26 LIU Gang, ZHANG Guojun, DING Xiangdong, SUN Jun, CHEN Kanghua, A model for age strengthening of Al alloys with plate/disc–like or rod/needle–like precipitate, Rare Metal Materials and Engineering, 32(12), 971(2003)
(刘 刚, 张国君, 丁向东, 孙 军, 陈康华, 具有盘/片状, 棒/针状析出相铝合金的时效--屈服强度变化模型, 稀有金属材料与工程, 32(12), 971(2003))
27 P.M.Kelly, The effect of particle shape on dispersion hardening, Scripta Metall., 6, 647(1972)
28 I.N.Khan, M.J.Starink, J.L.Yan, A model for precipitation kinetics and hardening in Al–Cu–Mg alloys, Mater. Sci. Eng. A, 472, 66(2007)
29 M.Perez, A.Deschamps, Microscopic modelling of simultaneous two–phase precipitation: application to carbide precipitation in low–carbon steels, Mater. Sci. Eng. A, 360, 214(2003)
30 Q.Li, R.N.Shenoy, DSC and TEM characterizations of thermal stability of an Al–Cu–Mg–Ag alloy, J. Mater. Sci., 32, 3401(1997)
31 M.J.Starink, P.J.Gregson, A quantitative interpretation of DSC experiments on quenched and aged SiCp reinforced 8090 alloys, Scripta Metall. Mater., 33, 893(1995) |
| No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
| |
Shared |
|
|
|
|
| |
Discussed |
|
|
|
|
