Effects of ileat treatment on transformation and shape memory behavior of Ti- 49. 8Ni cold-drawn wire

Wang Jian, Chen Dai-Song, Zhang Hui-Bo, Jin Wei, Liu Yu-Yin

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Effects of heat treatment on transformation, tensile properties and shape memory behavior for Ti-49. 8Ni(at. %) cold drawn wire were investigated by differential scanning calorimeter (DSC) and tensile tests. The results indicated that A R M transformation had occurred on cooling when the annealing temperature was less than 723K,and M R transformation and R A transformation overlapped on heating. When the annealing temperature was between 773K and 873K,only M A transformation occurred. The plasticity of the alloy wire was obviously improved after annealing at temperatures between 723K and 873K. The elongation reached its maximum after 823K annealing. The tensile strength maintains a high level of over 1000 MPa when the annealing temperature is less than 823K. The recovery strain and stress were the highest after annealing at 673K. The recovery strain reached its maximum of 6. 8% with a pre-strain of 15% ,and the recovery stress was maximal at 1022 MPa with a pre-strain of 9%.

Original languageEnglish
Title of host publicationTi 2011 - Proceedings of the 12th World Conference on Titanium
Pages1325-1327
Number of pages3
StatePublished - 2012
Externally publishedYes
Event12th World Conference on Titanium, Ti 2011 - Beijing, China
Duration: 19 Jun 201124 Jun 2011

Publication series

NameTi 2011 - Proceedings of the 12th World Conference on Titanium
Volume2

Conference

Conference12th World Conference on Titanium, Ti 2011
Country/TerritoryChina
CityBeijing
Period19/06/1124/06/11

Keywords

  • Cold drawing
  • Shape memory behavior
  • Tensile properties
  • Ti-49. 8Ni
  • Transformation

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