Effect of deformation on the stability of stress-induced martensite in nanocrystalline NiTi shape memory alloy - 文章详情页

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EI Scopus SCIE

摘要：

A　nanocrystalline　Ni-49.8　at%Ti　alloy　with　an　average　grain　size　of　about　16　am　was　acquired　by　cold-drawing　and　low-temperature　annealing.　The　stability　of　stress-induced　martensite　of　the　nanocrystalline　NiTi　alloy　was　investigated　by　a　differential　scanning　calorimeter　(DSC).　The　results　show　that　stress-induced　B19＇　martensite　was　preserved　when　the　samples　were　subjected　to　14%　and　16%　prestrain.　The　DSC　measurements　reveal　that　the　prestrained　samples　experience　two-stage　B19＇　-＞　B2　transformation　upon　the　first　heating　process　and　the　transformation　temperature　increases　with　an　increasing　prestrain.　(C)　2014　Elsevier　B.V.　All　rights　reserved.

关键词：

Nanocrystalline materials Phase transformation Phase stability Prestrain

作者机构：

[ 1 ] [Shi, Xiaobin]China Univ Petr, State Key Lab Heavy Oil Proc, Beijing 102249, Peoples R China
[ 2 ] [Yu, Mengying]China Univ Petr, State Key Lab Heavy Oil Proc, Beijing 102249, Peoples R China
[ 3 ] [Guo, Fangmin]China Univ Petr, State Key Lab Heavy Oil Proc, Beijing 102249, Peoples R China
[ 4 ] [Liu, Zhenyang]China Univ Petr, State Key Lab Heavy Oil Proc, Beijing 102249, Peoples R China
[ 5 ] [Jiang, Daqiang]China Univ Petr, State Key Lab Heavy Oil Proc, Beijing 102249, Peoples R China
[ 6 ] [Cui, Lishan]China Univ Petr, State Key Lab Heavy Oil Proc, Beijing 102249, Peoples R China
[ 7 ] [Han, Xiaodong]Beijing Univ Technol, Inst Microstruct & Properties Adv Mat, Beijing 100124, Peoples R China

通讯作者信息：

[Cui, Lishan]China Univ Petr, State Key Lab Heavy Oil Proc, Beijing 102249, Peoples R China

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lishancui63@126.com

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