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

被引：2

作者：

Liu, Jie ^{[1
]}

Chen, Han ^{[2
]}

机构：

[1] Shanghai Jiao Tong Univ, Sch Naval Architecture Ocean & Civil Engn, 800 Dongchuan Rd, Shanghai 200240, Peoples R China

[2] Shanghai Jiao Tong Univ, State Key Lab Met Matrix Composites, 800 Dongchuan Rd, Shanghai 200240, Peoples R China

来源：

JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE | 2019年 / 28卷 / 08期

基金：

中国国家自然科学基金;

关键词：

fracture analysis; hardness measurement; high-temperature torsion deformation; microstructure evolution; pure titanium; HIGH-PRESSURE TORSION; HOT DEFORMATION; DYNAMIC RECRYSTALLIZATION; STRUCTURAL EVOLUTION; ALLOY; MECHANISMS; COLD; RODS;

D O I：

10.1007/s11665-019-04247-0

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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 alpha 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.

引用

页码：4790 / 4800

页数：11

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