Grain refinement and excellent mechanical properties of a Ti-based alloy via laser melting and subsequent low temperature annealing

被引：9

作者：

Jiang, X. J. ^{[1
,2
]}

Chen, G. Y. ^{[1
]}

Men, X. L. ^{[1
]}

Han, R. H. ^{[1
]}

Zhao, P. ^{[1
]}

Dong, X. L. ^{[1
]}

Liu, R. P. ^{[2
]}

机构：

[1] Shijiazhuang Tiedao Univ, Sch Mat Sci & Engn, Hebei Prov Key Lab Traff Engn Mat, Shijiazhuang 050043, Hebei, Peoples R China

[2] Yanshan Univ, State Key Lab Metastable Mat Sci & Technol, Qinhuangdao 066004, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2018年 / 737卷

基金：

中国国家自然科学基金;

关键词：

Titanium alloy; Selective laser melting; Mechanical properties; Microstructure; TENSILE PROPERTIES; TITANIUM-ALLOY; PHASE-TRANSFORMATION; RESIDUAL-STRESSES; HEAT-TREATMENT; ALPHA-PHASE; MICROSTRUCTURE; TI-6AL-4V; BETA; DEFORMATION;

D O I：

10.1016/j.msea.2018.09.042

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Compared with arc melting, ultrahigh strength and good elongation of Ti-25Zr-10Al alloy via laser melting and subsequent low temperature annealing are investigated. The results show a strong dependency of the micro-structure on the methods of melting and subsequent low temperature annealing process. Compared with or-thorhombic alpha '' martensitic phase after arc melting, at the condition of relatively high cooling rate by laser melting, hexagonal close-packed alpha' martensitic phase with {1011} twinning is observed, and recrystallization with the average grain size of 0.3 gm occurs after subsequent low temperature annealing. In addition, ultrahigh strength of 1352 MPa and good elongation of 10.9% are obtained.

引用

页码：182 / 187

页数：6

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