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Journal of Materials Engineering and Performance

, Volume 28, Issue 8, pp 4790–4800 | Cite as

Experimental Study on Microstructure and Hardness of Pure Titanium Subjected to Torsion Deformation at Different Temperatures

  • Jie Liu
  • Han ChenEmail author
Article
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Abstract

The studies of mechanical property, microstructure evolution and fracture analysis in pure titanium processed by torsion deformation at 298, 673 and 1073 K are conducted systematically. The variations of mechanical property of deformed pure titanium are shown through Vickers hardness evaluation. During torsion at 298 K, the grains are refined and elongated, but the α phase with different shapes precipitates for twisted samples at 673 and 1073 K. The fracture appearance indicates that the elongated dimples occur on fracture surface at 298 K. Besides, a large number of shear facets are arranged. However, typical intergranular fracture appearance with lots of blocks in polyhedral shape covers the fracture surface at 673 and 1073 K, respectively.

Keywords

fracture analysis hardness measurement high-temperature torsion deformation microstructure evolution pure titanium 
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Notes

Acknowledgment

This work was supported by the National Natural Science Foundation of China (Grant No. 51275414); and the Aeronautical Science Foundation of China (Grant No. 2011ZE53059).

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© ASM International 2019

Authors and Affiliations

  1. 1.School of Naval Architecture, Ocean and Civil EngineeringShanghai Jiao Tong UniversityShanghaiPeople’s Republic of China
  2. 2.State Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong UniversityShanghaiPeople’s Republic of China

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