Elastic properties of the α' martensitic phase in the Ti-6Al-4V alloy obtained by additive manufacturing

被引：32
|
作者：
Dumontet, Nathan [1 ]
Connetable, Damien [1 ]
Malard, Benoit [1 ]
Viguier, Bernard [1 ]
机构：
[1] Univ Toulouse, CNRS, CIRIMAT, INP,ENSIACET, 4 Allee Emile Monso,BP44362, F-31030 Toulouse 4, France
来源：
SCRIPTA MATERIALIA | 2019年 / 167卷
关键词：
Additive manufacturing; Titanium alloys; Elastic behaviour; Density functional theory (DFT); Mechanical testing; YOUNGS MODULUS; HEAT-TREATMENT; LASER;
D O I：
10.1016/j.scriptamat.2019.03.042
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Elastic behaviour of Ti-6Al-4V alloy elaborated through additive manufacturing process is studied both experimentally and trough atomistic simulation. By studying rough samples after fabrication and after heat treatment, the elastic properties of the alpha' martensitic phase is compared to that of alpha + beta microstructure. Atomistic calculations were also performed on various super-cells varying their chemical composition in order to simulate a and alpha' phases and their full elastic stiffness tensors were determined. Both experimental and simulation results show that Young modulus of the alpha' phase is lower than that of a phase, while it presents a more anisotropic behaviour. (C) 2019 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：115 / 119
页数：5
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