Creep deformation mechanism of magnesium-based alloys
Source abstract
Abstract
Two heat-resistant magnesium alloys AJC421 and Mg-2Nd were prepared. Both as-cast Mg-2Nd and AJC421 alloys exhibited good creep resistance in comparison with commonly used magnesium alloys. The improvement in creep properties through Nd addition to pure magnesium is attributed to both solid solution and precipitation hardening. The stress exponents of 4.5–5.5 and activation energies of 70.0–96.0 kJ/mol obtained from the as-cast Mg-2Nd alloy at low temperatures and low stresses indicate the five power law can be used for predicting the creep mechanism. The additions of alkaline earth elements Sr and Ca into Mg–Al alloys suppress the discontinuous precipitation of Mg17Al12 and form thermal-stable intermediate phases at grain boundaries, leading to effective restriction to grain boundary sliding and migration. However, the mechanism responsible for creep deformation of Mg–Al based alloys with Ca and Sr additions is not consistent with the results of microstructure observations performed on the alloys before and after creep tests.
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Research context
OpenAlex topics: Magnesium Alloys: Properties and Applications · Aluminum Alloys Composites Properties · Advanced Welding Techniques Analysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (29)
Show source-provided references
1. Luo AA (2004) Int Mater Rev 49:13. doi: https://doi.org/10.1179/09506600422501049710.1179/095066004225010497 ↗
2. Lu YZ, Wang QD, Zeng XQ et al (2000) Mater Sci Eng A 278:66. doi: https://doi.org/10.1016/S0921-5093(99)00604-810.1016/S0921-5093(99)00604-8 ↗
3. Pekguleryuz MO, Kaya AA (2003) Adv Eng Mater 5:866. doi: https://doi.org/10.1002/adem.20030040310.1002/adem.200300403 ↗
4. Blawert C, Hort N, Kainer KU (2004) Trans Indian Inst Metab 57:397
5. Mordike BL (2002) Mater Sci Eng A 324:103. doi: https://doi.org/10.1016/S0921-5093(01)01290-410.1016/S0921-5093(01)01290-4 ↗
6. Bai J, Sun YS, Xue S et al (2006) Mater Sci Eng A 419:181. doi: https://doi.org/10.1016/j.msea.2005.12.01710.1016/j.msea.2005.12.017 ↗
7. Sherby OD, Burke PM (1968) Prog Mater Sci 13:323. doi: https://doi.org/10.1016/0079-6425(68)90024-810.1016/0079-6425(68)90024-8 ↗
8. Couret A, Caillard D (1985) Acta Mater 33:1447. doi: https://doi.org/10.1016/0001-6160(85)90045-810.1016/0001-6160(85)90045-8 ↗
9. Evangelista E, Gariboldi E, Lohne O et al (2004) Mater Sci Eng A 387–389:41. doi: https://doi.org/10.1016/j.msea.2004.02.07710.1016/j.msea.2004.02.077 ↗
10. Evans RW, Wilshire B (1985) Creep of metals and alloys. The Institute of Metals, New York
11. Xue S, Sun YS, Zhu TB et al (2005) Trans Nonferr Met Soc 15:863
12. Wang JG, Hsiung LM, Nieh TG et al (2001) Mater Sci Eng A 315:81. doi: https://doi.org/10.1016/S0921-5093(01)01209-610.1016/S0921-5093(01)01209-6 ↗
13. Nagasaki S, Hirabayashi M (2002) Binary alloy phase-diagrams. AGNE Gijutsu Center Co Ltd, Tokyo
14. American Society for Metals (1973) Metals handbook. Metals Park, Ohio
15. Nabarro FRN (2007) Encyclopedia of materials: science and technology. Elsevier Science Ltd, Oxford, p 1788
16. Dargush MS, Dunlop GL, Pettersen K (1998) In Mordike BL, Kainer KU (eds) Proceedings volume sponsored by Volkswagen AG. Werkstoff-Informationsgesellschaft, Frankfurt, p 277
17. Shi L, Northwood DO (1994) Acta Metall Mater 42:871. doi: https://doi.org/10.1016/0956-7151(94)90282-810.1016/0956-7151(94)90282-8 ↗
18. Kassner ME, Kumar P, Blum W (2007) Int J Plast 23:980. doi: https://doi.org/10.1016/j.ijplas.2006.10.00610.1016/j.ijplas.2006.10.006 ↗
19. Kassner ME, Pérez-Prado M-T (2004) Fundamentals of creep in metals and alloys. Elsevier Science Ltd, Oxford
20. Weertman J (1957) J Appl Phys 28:362. doi: https://doi.org/10.1063/1.172274710.1063/1.1722747 ↗
21. Jones RB, Harris JE (1963) Joint international conference on Creep, Part 3A. Inst Mech Eng Proc, NewYork
22. Tegart WJ (1961) Acta Metall 9:614. doi: https://doi.org/10.1016/0001-6160(61)90166-310.1016/0001-6160(61)90166-3 ↗
23. Crossland IG, Jones RB (1972) Met Sci J 6:16210.1179/030634572790446262 ↗
24. Crossland IG, Jones RB (1977) Met Sci J 11:50410.1179/030634577790432848 ↗
25. Nabarro FRN (1967) Philos Mag 16:231. doi: https://doi.org/10.1080/1478643670822973610.1080/14786436708229736 ↗
26. Sherby OD, Weertman J (1979) Acta Metall 27:387. doi: https://doi.org/10.1016/0001-6160(79)90031-210.1016/0001-6160(79)90031-2 ↗
27. Mordike BL, Stulikova I (1983) In: Proceedings of the international conference on metallic light alloys. Institution of Metallurgists, London, p 146
28. Suzuki M, Sato H, Maruyama K et al (2001) Mater Sci Eng A 319–321:751. doi: https://doi.org/10.1016/S0921-5093(01)01005-X10.1016/S0921-5093(01)01005-X ↗
29. Zhao P, Wang QD, Zhai CQ et al (2007) Mater Sci Eng A 444:318. doi: https://doi.org/10.1016/j.msea.2006.08.11110.1016/j.msea.2006.08.111 ↗