Assessment of microstructural evolution and associated tensile behavior in thin-walled Ti6Al4V parts manufactured via selective laser melting

被引：16

作者：

Zhang, Zhaoyang ^{[1
]}

Yang, Xin ^{[2
]}

Song, Fan ^{[1
]}

Yao, Xinlan ^{[1
]}

Zhang, Tianchi ^{[1
]}

Liu, Shifeng ^{[3
]}

Tang, Huiping ^{[2
]}

机构：

[1] Xian Univ Technol, Coll Mat Sci & Engn, Xian 710048, Peoples R China

[2] Zhejiang Univ City Coll, Coll Engn, Hangzhou 310015, Zhejiang, Peoples R China

[3] Xian Univ Architecture & Technol, Sch Met & Engn, Xian 710055, Peoples R China

来源：

MATERIALS CHARACTERIZATION | 2022年 / 194卷

关键词：

Selective laser melting; Ti6Al4V; Thin -walled structure; Mechanical properties; POWDER-BED FUSION; TI-6AL-4V; TRANSFORMATION; THICKNESS; ALLOY;

D O I：

10.1016/j.matchar.2022.112481

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Thin-walled structures plays an important role in the production of lightweight complexity components. Currently, the systematic research works on additive manufacturing of thin-walled components are rarely reported, making it impossible to properly supervise the production of complicated thin-walled parts. The aim of present study was to investigate the effects of thickness on the microstructure and mechanical characteristics of thin-walled Ti6Al4V alloy produced by SLM. As the thickness increased from 0.5 mm to 2.0 mm, surface roughness decreased from 15.702 mu m to 5.769 mu m, ultimate tensile strength grew from 1052 MPa to 1313 MPa while elongation initially increased and then decreased (all <8%). The microstructure, which has a hierarchical structure with tensile twins, dislocations (dislocation loops), and stacking faults, is dominated by martensite.

引用

页数：11

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