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Investigation on the deformation of TiNi shape memory alloy with a crack using moiré interferometry

  • Wang Qinghua*
  • , Xie Huinnin
  • , Jiang Haichang
  • , Li Yanjie
  • , Dai Fulong
  • , Chen Pengwan
  • , Zhang Qingming
  • , Huang Fenglei
  • *此作品的通讯作者
  • Tsinghua University
  • CAS - Institute of Metal Research
  • Beijing Institute of Technology

科研成果: 书/报告/会议事项章节会议稿件同行评审

摘要

Martensitic phase transformation can greatly affect the mechanical behaviors and the stress-strain response of shape memory alloys (SMAs). In this study, the effect of martensitic phase transformation on the deformation of a single-crystal TiNi SMA specimen with a triangle crack was investigated experimentally by means of moiré interferometry method. A typical displacement field and the corresponding strain field in areas both around and far from the tip of the crack were measured in a certain time during the loading process in which the tensile load is coupled with the stress-induced martensitic phase transformation. Some characteristics of the deformation and the martensitic phase transformation of the specimen are revealed. These results may provide a reliable support for revealing the fracture mechanism of single crystal TiNi SMAs, and may enable further development in putting forward the failure criterion of SMAs.

源语言英语
主期刊名Advances in Fracture and Materials Behavior - Selected, peer reviewed papers of the Seventh International Conference on Fracture and Strength of Solids (FEOFS2007)
出版商Trans Tech Publications
1-6
页数6
ISBN(印刷版)0878493999, 9780878493999
出版状态已出版 - 2008
活动7th International Conference on Fracture and Strength of Solids, FEOFS 2007 - Urumqi, 中国
期限: 27 8月 200729 8月 2007

出版系列

姓名Advanced Materials Research
33-37 PART 1
ISSN(印刷版)1022-6680

会议

会议7th International Conference on Fracture and Strength of Solids, FEOFS 2007
国家/地区中国
Urumqi
时期27/08/0729/08/07

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