Title:
形状記憶合金及び形状記憶合金線材
Document Type and Number:
Japanese Patent JP6661132
Kind Code:
B2
Abstract:
The present invention provides a shape-memory alloy including a Au—Cu—Al alloy having 20 at % or more and 40 at % or less Cu and 15 at % or more and 30 at % or less Al, with the balance being Au and inevitable impurities. The shape-memory alloy has a Vickers hardness of 360 Hv or less. The Au—Cu—Al alloy of the present invention is an alloy capable of developing both biocompatibility and a shape-memory effect, and further capable of achieving artifactlessness in a magnetic environment. The Au—Cu—Al alloy can be produced by heat-treating a clad material formed of a combination of a hollow material made of a Au—Cu alloy and a core material made of metallic Al at 500° C. or more and 700° C. or less.
Inventors:
Hideki Hosoda
Akira Kaise
Kenshi Goto
Akira Kaise
Kenshi Goto
Application Number:
JP2018037895A
Publication Date:
March 11, 2020
Filing Date:
March 02, 2018
Export Citation:
Assignee:
National University Corporation Tokyo Institute of Technology
Tanaka Kikinzoku Kogyo Co., Ltd.
Tanaka Kikinzoku Kogyo Co., Ltd.
International Classes:
C22C5/02; C22F1/14
Domestic Patent References:
| JP3013535A | ||||
| JP2015048485A |
Foreign References:
| CN101565783A | ||||
| WO2019039298A1 | ||||
| WO2010084948A1 | ||||
| WO2017154717A1 |
Other References:
細田秀樹、堀貴文、盛田智彦、海瀬晃、田原正樹、稲邑朋也、後藤研滋、金高弘恭,Au-Cu-Al系形状記憶合金の機械的性質に及ぼすAlおよびCu濃度の影響,日本金属学会誌,日本,2015年11月27日,第80巻,第1号,p.27-36,Online ISSN 1880-6880, Print ISSN 0021-4876
Attorney, Agent or Firm:
Patent business corporation Tanaka, Okazaki and Associates