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The Asymmetry of Tension-Compression Performances and strain rate sensitivity of TA2
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Affiliation:

Nanjing Tech University

Clc Number:

TG146.2+3

Fund Project:

the National Natural Science Foundation of China (Grant No. 51375223), the National Key Research and Development Plan of China (Grant No.2017YFF0210405)

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    Abstract:

    The behavior of commercially pure titanium (TA2) under tension and compression were investigated at different strain rates. Significant tension-compression asymmetry in yielding and strain hardening was observed. With the increment of deformation strain rate, the asymmetry of TA2 increased. The microscopic deformation mechanisms and microstructure evolutions of commercially pure titanium under tension and compression were analyzed using electron backscattered diffraction (EBSD) techniques. The results showed that the compressive deformation of commercially pure titanium was dominated by deformation twinning while the tensile deformation was dominated by the dislocations sliding. The macroscopic tension-compression asymmetry of commercially pure titanium was determined by load sensitivity of microscopic deformation behaviors.

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[Tao Jiahui, Gu Boqin, Chen Lili, Zhou Jianfeng. The Asymmetry of Tension-Compression Performances and strain rate sensitivity of TA2[J]. Rare Metal Materials and Engineering,2019,48(11):3571~3576.]
DOI:10.12442/j. issn.1002-185X.20180692

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History
  • Received:June 29,2018
  • Revised:September 01,2018
  • Adopted:October 08,2018
  • Online: December 10,2019
  • Published: