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Characterization of continuous dynamic recrystallization in WE43 magnesium alloy
Materials Chemistry and Physics ( IF 4.6 ) Pub Date : 2021-01-01 , DOI: 10.1016/j.matchemphys.2020.123726
S.M. Fatemi , H. Paul

Abstract The occurrence of continuous dynamic recrystallization in a solutionized WE43 alloy during compressive deformation at 450 °C was studied. It was revealed that dynamic formation of β ' second phase particles may exhaust strain-hardening capacity of material, causing the deformation to be concentrated in shear regions. The results showed that prismatic systems play the role as dominant deformation mechanism during shear band formation. The promotion of dislocation activity in this regions assist in the development of low angle boundaries, the misorientation of which is gradually increased with further deformation. The results indicated that, unlike common magnesium alloys, continuous dynamic recrystallization in the RE-containing experimental alloy involves the rotation of grains about non-basal poles. This was discussed relying on the pronounced contribution of non-basal slip during recrystallization of grains within shear regions.

中文翻译:

WE43镁合金连续动态再结晶表征

摘要 研究了固溶 WE43 合金在 450 °C 压缩变形过程中发生连续动态再结晶的情况。结果表明,β'第二相粒子的动态形成可能会耗尽材料的应变硬化能力,导致变形集中在剪切区域。结果表明,棱柱系统在剪切带形成过程中起主导变形机制的作用。该区域位错活动的促进有助于低角度边界的发展,随着进一步变形,其取向差逐渐增加。结果表明,与普通镁合金不同,含RE实验合金的连续动态再结晶涉及晶粒围绕非基极的旋转。
更新日期:2021-01-01
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