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IRON-BASED ALLOY HAVING SHAPE-MEMORY PROPERTY AND SUPERELASTICITY AND METHOD FOR MANUFACTURE THEREOF

Foreign code F110004776
File No. A282-11WO
Posted date Jul 21, 2011
Country Republic of Korea
Application number 20087012940
Gazette No. 20080064994
Gazette No. 101004051
Date of filing Nov 2, 2006
Gazette Date Jul 10, 2008
Gazette Date Dec 31, 2010
Priority data
  • P2005-325393 (Nov 9, 2005) 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 a gamma-phase and a 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 AND TECHNOLOGY 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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