Developing superplasticity in a magnesium AZ31 alloy by ECAP
Source abstract
Abstract
The processing of a magnesium AZ31 alloy by equal-channel angular pressing refines the grain size to ~2.2 μm, but annealing for 30 min at 673 K coarsens the grains to ~6.0 μm. Despite this microstructural instability, the alloy is superplastic when pulled in tension at temperatures in the range of 623–723 K with elongations up to >1000% at strain rates at and below 10−4 s−1. Experiments within the superplastic regime show the strain rate sensitivity is ~0.5 and the activation energy is close to the value for grain boundary diffusion. It is demonstrated by calculation that the experimental results are in good agreement with a model for superplasticity based on grain boundary sliding.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Magnesium Alloys: Properties and Applications · Microstructure and mechanical properties · Aluminum Alloys Composites Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (30)
Show source-provided references
1. Valiev RZ, Langdon TG (2006) Prog Mater Sci 51:881. doi:https://doi.org/10.1016/j.pmatsci.2006.02.00310.1016/j.pmatsci.2006.02.003 ↗
2. Langdon TG (1982) Metall Trans 13A:68910.1007/BF02642383 ↗
3. Xu C, Horita Z, Furukawa M, Langdon TG (2004) J Mater Eng Perform 13:683. doi:https://doi.org/10.1361/1059949042138510.1361/10599490421385 ↗
4. Kawasaki M, Figueiredo RB, Xu C, Langdon TG (2007) Metall Mater Trans 38A:189110.1007/s11661-006-9000-x ↗
5. Kawasaki M, Langdon TG (2007) J Mater Sci 42:1782. doi:https://doi.org/10.1007/s10853-006-0954-210.1007/s10853-006-0954-2 ↗
6. Furui M, Kitamura H, Anada H, Langdon TG (2007) Acta Mater 55:1083. doi:https://doi.org/10.1016/j.actamat.2006.09.02710.1016/j.actamat.2006.09.027 ↗
7. Lapovok R, Cottam R, Thomson PF, Estrin Y (2005) J Mater Res 20:1375. doi:https://doi.org/10.1557/JMR.2005.018010.1557/JMR.2005.0180 ↗
8. Lapovok R, Thomson PF, Cottam R, Estrin Y (2005) Mater Sci Eng A 410–411:390. doi:https://doi.org/10.1016/j.msea.2005.08.06710.1016/j.msea.2005.08.067 ↗
9. Figueiredo RB, Langdon TG (2008) Adv Eng Mater 10:37. doi:https://doi.org/10.1002/adem.20070031510.1002/adem.200700315 ↗
10. Myahara Y, Horita Z, Langdon TG (2006) Mater Sci Eng A 420:240. doi:https://doi.org/10.1016/j.msea.2006.01.04310.1016/j.msea.2006.01.043 ↗
11. Mabuchi M, Ameyama K, Iwasaki H, Higashi K (1999) Acta Mater 47:2047. doi:https://doi.org/10.1016/S1359-6454(99)00094-410.1016/S1359-6454(99)00094-4 ↗
12. Lin HK, Huang JC, Langdon TG (2005) Mater Sci Eng A 402:250. doi:https://doi.org/10.1016/j.msea.2005.04.01810.1016/j.msea.2005.04.018 ↗
13. Watanabe H, Takara A, Somekawa H, Mukai T, Higashi K (2005) Scr Mater 52:449. doi:https://doi.org/10.1016/j.scriptamat.2004.11.01110.1016/j.scriptamat.2004.11.011 ↗
14. Iwahashi Y, Wang J, Horita Z, Nemoto M, Langdon TG (1996) Scr Mater 35:143. doi:https://doi.org/10.1016/1359-6462(96)00107-810.1016/1359-6462(96)00107-8 ↗
15. Furukawa M, Iwahashi Y, Horita Z, Nemoto M, Langdon TG (1998) Mater Sci Eng A 257:328. doi:https://doi.org/10.1016/S0921-5093(98)00750-310.1016/S0921-5093(98)00750-3 ↗
16. Vagarali SS, Langdon TG (1982) Acta Metall 30:1157. doi:https://doi.org/10.1016/0001-6160(82)90009-810.1016/0001-6160(82)90009-8 ↗
17. Jin L, Dongliang L, Mao D, Zeng X, Ding W (2006) J Alloy Comp 426:148. doi:https://doi.org/10.1016/j.jallcom.2006.02.01810.1016/j.jallcom.2006.02.018 ↗
18. Su CW, Lu L, Lai MO (2006) Mater Sci Eng A 434:227. doi:https://doi.org/10.1016/j.msea.2006.06.10310.1016/j.msea.2006.06.103 ↗
19. Kim HK, Kim WJ (2004) Mater Sci Eng A 385:30010.1016/S0921-5093(04)00882-2 ↗
20. Xia K, Wang JT, Wu X, Chen G, Gurvan M (2005) Mater Sci Eng A 410–411:324. doi:https://doi.org/10.1016/j.msea.2005.08.12310.1016/j.msea.2005.08.123 ↗
21. Zuberová Z, Estrin Y, Lamark TT, Janecek M, Hellmig RJ, Krieger M (2007) J Mater Proc Tech 184:294. doi:https://doi.org/10.1016/j.jmatprotec.2006.11.09810.1016/j.jmatprotec.2006.11.098 ↗
22. Janecek M, Popov M, Krieger MG, Hellmig RJ, Estrin Y (2007) Mater Sci Eng A 462:116. doi:https://doi.org/10.1016/j.msea.2006.01.17410.1016/j.msea.2006.01.174 ↗
23. Langdon TG (1994) Mater Sci Eng A 174:225. doi:https://doi.org/10.1016/0921-5093(94)91092-810.1016/0921-5093(94)91092-8 ↗
24. Valiev RZ, Langdon TG (1993) Acta Metall Mater 41:949. doi:https://doi.org/10.1016/0956-7151(93)90029-R10.1016/0956-7151(93)90029-R ↗
25. Langdon TG (1994) Acta Metall Mater 42:2437. doi:https://doi.org/10.1016/0956-7151(94)90322-010.1016/0956-7151(94)90322-0 ↗
26. Frost HJ, Ashby MF (1982) Deformation-Mechanism Maps: The Plasticity and Creep of Metals and Ceramics. Pergamon Press, Oxford, UK
27. Somekawa H, Hosokawa H, Watanabe H, Higashi K (2003) Mater Sci Eng A 339:328. doi:https://doi.org/10.1016/S0921-5093(02)00127-210.1016/S0921-5093(02)00127-2 ↗
28. del Valle JA, Carreño F, Ruano OA (2007) Scr Mater 57:829. doi:https://doi.org/10.1016/j.scriptamat.2007.07.00210.1016/j.scriptamat.2007.07.002 ↗
29. Langdon TG (2002) Metall. Mater Trans 33A:24910.1007/s11661-002-0087-4 ↗
30. del Valle JA, Pérez-Prado MT, Ruano OA (2005) Metall. Mater Trans 36A:142710.1007/s11661-005-0235-8 ↗