Anisotropic Study of Ti6Al4V Alloy Formed by Selective Laser Melting

被引：15
作者：
Huang, Weidong [1 ,2 ]
Chen, Xiayu [1 ]
Huang, Xu [1 ,2 ]
Wang, Hui [1 ,2 ]
Zhu, Yitao [1 ]
机构：
[1] Fujian Univ Technol, Acad Mech & Automot Engn, Fuzhou 350118, Peoples R China
[2] Adv Mfg Prod Promot Ctr Fujian Prov, Fuzhou 350118, Peoples R China
来源：
JOM | 2021年 / 73卷 / 12期
关键词：
MECHANICAL-PROPERTIES; HEAT-TREATMENT; MICROSTRUCTURE; TEXTURE; SUPERALLOY; TI-6AL-4V; EVOLUTION;
D O I：
10.1007/s11837-021-04765-0
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Selective laser melting (SLM) is a manufacturing technology that involves melting metal powder beds. Due to the temperature gradient during the course of forming, anisotropy is further caused by oriented grain growth. However, the influence of process parameters on anisotropy has not been studied. Two types of parameter scanning strategies and rotation angle increments were selected to alter the growth tendency of grains, thus affecting anisotropy. Comparing the STRIPES scanning strategy and the CHESS strategy, the latter can restrain anisotropy, while in the former, the anisotropy of tensile stress is influenced by the layer angle increment. The maximum tensile strength of SLM-formed parts in the formed direction deviates from an angle of 60 degrees (1235 MPa and elongation of 5.3%), and the maximum microhardness property appears at the formed direction surface, namely, the top side surface (487 HV).
引用
收藏
页码：3804 / 3811
页数：8
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