INFLUENCE OF ANNEALING ON RECOVERY STRESS OF COLD-WORKED Ni–Ti WIRE

Author:

YAN XIAO-JUN1,VAN HUMBEECK JAN1

Affiliation:

1. Department of Metallurgy and Materials Engineering (MTM), Katholieke Universiteit Leuven, Kasteelpark Arenberg 44 bus 2450, B-3001 Leuven, Belgium

Abstract

The effect of annealing on the recovery stress of Ni – Ti wire has been studied by using a dynamic mechanical analyzer (DMA), TAQ800. The results show that the recovery stresses decrease with increasing annealing temperature in the range of 350–600°C and increase with increasing annealing temperature in the range of 600–900°C. It was found that the recovery stress is proportional to the plateau stress at room temperature, the recoverable strain under zero load and relative temperature increase above As.

Publisher

World Scientific Pub Co Pte Lt

Subject

General Materials Science

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