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Published in:

2016 | OriginalPaper | Chapter

Deformation Twinning Behavior in Precipitate Strengthened Cu-Ni-Si Alloys

Authors : Akiyoshi Araki, Equo Kobayashi, Tatsuo Sato, Warren Poole

Published in: TMS 2015 144th Annual Meeting & Exhibition

Publisher: Springer International Publishing

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The deformation twinning behavior in Cu-Ni-Si alloys strengthened by Ni₂Si precipitates have been studied. The SEM/EBSP result indicated that the nano-scale deformation twins cannot grow to micro twins during room temperature deformation. The results also revealed that the formation and growth of deformation twinning needs certain strain and stress level in the alloy aged at 723 K for 3.6k and deformed at 77 K. In contrast, it started from initial stage of deformation in the alloy aged at 723 K for 64.8 ks and deformed at 77 K. These results indicate that the deformation twinning needs certain level of stress rather than strain in precipitate strengthened Cu-Ni-Si alloy.

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