Residual stress via the contour method in compact tension specimens produced via selective laser melting

SCRIPTA MATERIALIA

卷:87

Article

Vrancken, Bey¹  Cain, Victoria^2,3  Knutsen, Rob²  Van Humbeeck, Jan¹ 

[1] Katholieke Univ Leuven, Dept Mat Sci, Leuven, Belgium

[2] Univ Cape Town, Dept Mech Engn, Ctr Mat Engn, ZA-7700 Rondebosch, South Africa

[3] Cape Peninsula Univ Technol, Dept Mech Engn, Cape Town, South Africa

关键词: Additive manufacturing;    Selective laser melting;    Residual stress;    Contour method;    Fractography;   

DOI  :  10.1016/j.scriptamat.2014.05.016

来源: Elsevier

【 摘 要 】

The complex thermal history of parts produced via selective laser melting (SLM) leads to a complex residual stress state. While it is generally accepted that these residual stresses are unfavorable, their exact influence on the mechanical behavior of parts produced by SLM is unknown. Two-dimensional stress mapping using the contour method shows that residual stresses have a major influence on the anisotropic behavior of Ti6Al4V produced via SLM. Furthermore, maximum stress values are close to the yield stress. (C) 2014 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

【 授权许可】

Free