大角度ECAP变形模具制备纯钛的变形织构演化模拟

doi:10.11896/cldb.19070131

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Abstract Pure titanium was processed by two passes of ECAP with 135° die via route C at room temperature. The effect of ECAP on the texture of pure titanium was studied by X-ray diffraction (XRD). The original texture and ECAP deformed texture of pure titanium were measured and compared with those of pure titanium calculated by VPSC self-consistent theoretical model.The results show that the original pure titanium is composed of equiaxed grains and the grain boundary is clear. The maximum polar density of {0002} crystal plane is 2.6. The main texture is P₁ texture, which is prone to cylinder slip and the compression twin system is easy to be activated. The original texture of pure titanium transforms into P texture after 1 pass of ECAP, and the C₂ texture appears at the same time. After 2 passes of ECAP, the P texture disappears, and only the C₂ texture exists. The texture calculated by the VPSC is almost similar with the experimental texture, which is prone to basal slip and tension twins are more likely to be activated.

Key words： pure titanium equal-channel angular pressing (ECAP) visco-plastic self-consistent (VPSC) texture Schmid factor

Published: 24 July 2020

CLC number:

TG146

Fund:This work was financially supported by the National Natural Science Foundation of China (51474170).

About author:: Xirong Yangis a professor and doctoral supervisor of Xi’an University of Architectural Science (XAUAT) and Technology. In 1997, he graduated from Xi’an University of Architecture and Technology with a major in metal plastic processing, XAUAT till now. He has been engaged in the teaching and scientific research of metal material plastic processing, and is a backbone teacher of material processing engineering. He has published more than 100 papers in academic journals at home and abroad, and has granted 2 patents. The team’s main research areas include ultra-fine grained materials and their structure and properties control, and computer simulation of structure and properties of materials. He has participated in 3 national-level projects, presided over more than 10 provincial-level scientific research projects, and more than 10 provincial-level scie-ntific research projects. He has won the first prize of Shanxi University Scie-nce and Technology Award.
Fengfeng Hao, master of Science and Technology at Xi’an University of Architecture and Technology, gra-duated from Xi’an University of Architecture and Technology in June 2017 with a bachelor’s degree in engineering. She is currently a graduate student in the School of Metallurgical Engineering of Xi’an University of Architecture and Technology, under the guidance of Professor Yang Xirong. At present, the main research field is computer simulation of structure and properties of ultra-fine grained materials.

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	YANG Xirong
	HAO Fengfeng
	LUO Lei
	LIU Xiaoyan
	MA Weijie
	WANG Liyuan

Cite this article:

YANG Xirong,HAO Fengfeng,LUO Lei, et al. Simulation of Deformation Texture Evolution of Pure Titanium Prepared by Large Angle ECAP Deformation Die[J]. Materials Reports, 2020, 34(16): 16077-16082.

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http://www.mater-rep.com/EN/10.11896/cldb.19070131 OR http://www.mater-rep.com/EN/Y2020/V34/I16/16077

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