Title:
CU-AL-MN-BASED SHAPE-MEMORY ALLOY MOLDED ARTICLE AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2020/158684
Kind Code:
A1
Abstract:
A Cu-Al-Mn-based shape-memory alloy molded article according to the present invention has a screw part, wherein the screw part is a thread-rolled part. A method for producing a Cu-Al-Mn-based shape-memory alloy molded article according to the present invention comprises the steps of: molding at least a part of a molded article material by plastic working by means of thread rolling while keeping the crystal structure in an A2-type structure; and subjecting the molded product to a heat treatment so as to change the A2-type structure to an L21-type structure to form a screw part that can exhibit hyperelastic properties. The screw part can be formed with good working properties, and has excellent fatigue resistance properties and breaking resistance properties.
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Inventors:
KISE SUMIO (JP)
TANAKA TOYONOBU (JP)
URUMA KENJI (JP)
ISHIKAWA KOUJI (JP)
KATAOKA NANAMI (JP)
YOKOYAMA SHIGEKAZU (JP)
HIGASHIDA TOYOHIKO (JP)
TANAKA TOYONOBU (JP)
URUMA KENJI (JP)
ISHIKAWA KOUJI (JP)
KATAOKA NANAMI (JP)
YOKOYAMA SHIGEKAZU (JP)
HIGASHIDA TOYOHIKO (JP)
Application Number:
PCT/JP2020/002834
Publication Date:
August 06, 2020
Filing Date:
January 27, 2020
Export Citation:
Assignee:
FURUKAWA TECHNO MAT CO LTD (JP)
International Classes:
C22C9/01; B21H3/02; C22C9/05; C22F1/00; C22F1/08; F16B35/00
Foreign References:
| JP2017141491A | 2017-08-17 | |||
| JP2004009135A | 2004-01-15 | |||
| JPH11207525A | 1999-08-03 | |||
| JP2003213388A | 2003-07-30 | |||
| JP2018119657A | 2018-08-02 | |||
| JP2018119657A | 2018-08-02 |
Other References:
EARTHQUAKE ENGINEERING & STRUCTURAL DYNAMICS, vol. 45, 2016, pages 297 - 314
See also references of EP 3919640A4
See also references of EP 3919640A4
Attorney, Agent or Firm:
SAITO Takuya et al. (JP)
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