Impact Toughness of Ti-6Al-4V Parts Fabricated by Additive Manufacturing

被引：8
作者：
Kazachenok, M. [1 ]
Panin, A. [1 ]
Panin, S. [1 ]
Vlasov, I. [1 ]
机构：
[1] RAS, SB, Inst Strength Phys & Mat Sci, Akad Skiy Pr 2-4, Tomsk 634055, Russia
来源：
PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON ADVANCED MATERIALS WITH HIERARCHICAL STRUCTURE FOR NEW TECHNOLOGIES AND RELIABLE STRUCTURES 2019 | 2019年 / 2167卷
基金：
俄罗斯科学基金会;
关键词：
D O I：
10.1063/1.5132020
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Additive manufacturing is a new and quite promising trend in the low-cost building of Ti-6Al-4V parts which are widely used in aircraft, chemical, medical, and other industries. It is well-documented that 3D-printed Ti-6Al-4V parts have higher yield strength, ultimate tensile strength and hardness but lower ductility and toughness as compared with wrought alloy. In this study, comparison on the microstructure and impact toughness of wrought Ti-6Al-4V and ones fabricated by additive manufacturing such as i) laser and electron-beam powder bed deposition as well as ii) direct energy wire deposition was performed. The 2.7 times enhancement of fracture toughness of Ti-6Al-4V parts fabricated by electron beam free-form fabrication as compared with cast Ti-6Al-4V alloy was demonstrated. The 5.6 times increase in the impact toughness as in contrast with selective laser and electron-beam melted ones was revealed.
引用
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页数：4
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