On the effect of titanium on quenching sensitivity and pseudoelastic response in Fe-Mn-Al-Ni-base shape memory alloy

SCRIPTA MATERIALIA

卷:126

Article

Vollmer, M.¹  Krooss, P.¹  Karaman, I.²  Niendorf, T.¹ 

[1] Univ Kassel, Inst Werkstofftech Mat Engn, D-34125 Kassel, Germany

[2] Texas A&M Univ, Dept Mat Sci & Engn, College Stn, TX 77843 USA

关键词: Martensitic phase transformation;    Abnormal grain growth;    Superelasticity;    Precipitates;    FeMnAlNiTi;   

DOI  :  10.1016/j.scriptamat.2016.08.002

来源: Elsevier

【 摘 要 】

In the present study, the effect of Ti addition on the microstructure evolution and pseudoelastic properties of a Fe-Mn-Al-Ni shape memory alloy were investigated. By replacing 1.5 at.% Al by Ti in Fe-Mn-Al-Nio it was possible to strongly hamper the formation of the ductile, non-transforming gamma-phase, which is detrimental to the pseudoelastic performance. Single crystalline samples were fabricated via abnormal grain growth. Following aging treatment at 250 degrees C compression testing at various testing temperatures was conducted up to 10.5% strain using a near (102) oriented single crystal. A low Clausius-Clapeyron slope and good pseudoelastic properties were found. (C) 2016 Ada Materialia Inc. Published by Elsevier Ltd. All rights reserved.

【 授权许可】

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