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Iron-based alloy having shape-memory property and superelasticity and method for manufacture thereof

Foreign code F110004534
File No. A282-11WO
Posted date 2011年7月19日
Country 中華人民共和国
Application number 200680041479
Gazette No. 101305109
Gazette No. 101305109
Date of filing 平成18年11月2日(2006.11.2)
Gazette Date 平成20年11月12日(2008.11.12)
Gazette Date 平成23年9月28日(2011.9.28)
Priority data
  • 特願2005-325393 (2005.11.9) JP
Title Iron-based alloy having shape-memory property and superelasticity and method for manufacture thereof
Abstract

Disclosed is an iron-based alloy having a shape-memory property and superelasticity. The alloy comprises 25-35% by mass of Ni, 13-25% by mass of Co, 2-8% by mass of Al, at least one component selected from the group consisting of 1-5% by mass of Ti, 2-10% by mass of Nb and 3-20% by mass of Ta in a total amount of 1-20% by mass, and the remainder comprising substantially Fe and inavoidable impurities. The iron-based alloy is composed substantially of gamma-phase and gamma'-phase and has a re-crystallized coherent tissue wherein a specific crystal orientation is uniform in the gamma-phase, in which the difference between the reverse transformation end temperature and the martensitic transformation start temperature in the thermal hysteresis in martensitic transformation and reverse transformation is 100 DEG C or lower.

  • Applicant
  • JAPAN SCIENCE & TECH AGENCY
  • Inventor
  • ISHIDA KIYOHITO,
  • KAINUMA RYOSUKE,
  • SUTOU YUJI,
  • TANAKA YUUKI
IPC(International Patent Classification)
Reference ( R and D project ) CREST The Innovation of Simulation Technology and the Construction of Foundations for Its Practical Use AREA
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