Fine-Grained Bulk NiTi Shape Memory Alloy Fabricated by Rapid Solidifcation Process and Its Mechanical Properties and Damping Performance

查看全文 作　　者：Hongjie [1]Jiang;Shanshan [1]Cao;Changbo [1]Ke;Xiao [1]Ma;Xinping [1]Zhang

机构地区：[1]School of Materials Science and Engineering,South China University of Technology

出　　处：《Journal of Materials Science & Technology》索引2013年第29卷第9期,共8页

基　　金：supported by the National Natural Science Foundation of China under grant Nos. 50871039 and 51205135;Guangdong Provincial Natural Science Foundation under grant Nos. 10151064101000017 and S2011040001436;the Fundamental Research Funds for Central Universities (SCUT2011ZM0001) 摘　　要：A near-equiatomic NiTi shape memory alloy was fabricated by rapid solidification process through vacuum arc melting followed by vacuum suction casting in water-cooled thick copper mold.The rapidly solidified(or suction cast) NiTi alloy shows much finer grains and homogenous microstructure,in particular a uniform distribution of various fine precipitates,compared to the conventional cast one.The resultant alloy also exhibits the homogenous Ni distribution in the matrix of the alloy,allowing the martensitic transformation to take place throughout the NiTi alloy matrix simultaneously and resulting in sharper transformation peaks compared to the conventional cast alloy.Moreover,the suction cast NiTi alloy shows a significant improvement over the conventional cast one,in terms of possessing higher deformation recovery rates and displaying the increased compressive strength and damping capacity by 4% and 20%,respectively. 关键词：镍钛形状记忆合金合金材料凝固过程减震性能力学性能细粒度 NITI合金散装

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Fine-Grained Bulk NiTi Shape Memory Alloy Fabricated by Rapid Solidifcation Process and Its Mechanical Properties and Damping Performance

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引证文献(6)

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