TY - JOUR
T1 - Martensitic transformation and mechanical properties of AuCuAl-based biomedical shape memory alloys containing various quaternary elements
AU - Umise, Akira
AU - Morita, Tomohiko
AU - Hori, Takahumi
AU - Goto, Kenji
AU - Kanetaka, Hiroyasu
AU - Tahara, Masaki
AU - Inamura, Tomonari
AU - Hosoda, Hideki
N1 - Publisher Copyright:
© 2015 The Japan Institute of Metals and Materials.
PY - 2016
Y1 - 2016
N2 - Although AuCuAl shape memory alloys are hopeful as advanced functional biomaterials exhibiting shape memory effect and good X-ray radiography, the limited ductility in polycrystalline materials is a drawback for practical applications. In this study, effects of quaternary elements (B, Ti, Zr, Cr, Mn, Fe, Zn, In and Sn) on martensitic transformation start temperature (Ms) and mechanical properties are investigated. It was found that (1) Mn, Fe, In and Sn additions decrease Ms and that (2) B, Ti, Zr, Cr and Zr additions do not affect or slightly increase Ms. Among the quaternary additions investigated, only Fe addition drastically improves ductility. Therefore, Fe is concluded to be the effective additional element to bring both sufficiently low Ms and ductility to AuCuAl alloys.
AB - Although AuCuAl shape memory alloys are hopeful as advanced functional biomaterials exhibiting shape memory effect and good X-ray radiography, the limited ductility in polycrystalline materials is a drawback for practical applications. In this study, effects of quaternary elements (B, Ti, Zr, Cr, Mn, Fe, Zn, In and Sn) on martensitic transformation start temperature (Ms) and mechanical properties are investigated. It was found that (1) Mn, Fe, In and Sn additions decrease Ms and that (2) B, Ti, Zr, Cr and Zr additions do not affect or slightly increase Ms. Among the quaternary additions investigated, only Fe addition drastically improves ductility. Therefore, Fe is concluded to be the effective additional element to bring both sufficiently low Ms and ductility to AuCuAl alloys.
KW - Ductility
KW - Gold-copper-aluminum
KW - Martensitic transformation
KW - Mechanical properties
KW - Quaternary addition
KW - Shape memory alloy
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U2 - 10.2320/jinstmet.JB201512
DO - 10.2320/jinstmet.JB201512
M3 - Article
AN - SCOPUS:85012000540
SN - 0021-4876
VL - 80
SP - 71
EP - 76
JO - Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
JF - Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
IS - 1
ER -