Effect of Powder Recycling on Environment-Assisted Fracture of Inconel 718 Alloy Fabricated by Laser Powder Bed Fusion

被引：6
|
作者：
Kim, Soyoung [1 ]
Goto, Masahiro [2 ]
Kim, Sangshik [1 ]
机构：
[1] Gyeongsang Natl Univ, Dept Mat Engn & Convergence Technol, ReCAPT, Jinju 52828, South Korea
[2] Oita Univ, Dept Mech Engn, Oita 8701192, Japan
来源：
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2022年 / 53卷 / 01期
基金：
新加坡国家研究基金会;
关键词：
STRESS-CORROSION CRACKING; STAINLESS-STEEL; MECHANICAL-PROPERTIES; BEHAVIOR; FATIGUE; MICROSTRUCTURE; SUSCEPTIBILITY; GROWTH; REUSE; PROPAGATION;
D O I：
10.1007/s11661-021-06514-z
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Environment-assisted fracture (EAF) behavior of Inconel718 (IN718) specimens made from virgin and recycled powder by laser powder bed fusion (L-PBF) process was investigated. To this, in situ slow strain rate tests (SSRTs) and fatigue crack propagation (FCP) tests were conducted in air and 3.5 pct NaCl/60 degrees C/E-corr + 0.1 V-SCE. Powder recycling up to 6 times did not affect the EAF sensitivity of L-PBF IN718 specimens in chloride-bearing environment, despite the marginal decrease in electrochemical resistance. Detailed fractographic and micrographic analyses were performed to identify the effect of powder recycling on static and dynamic EAF behaviors of L-PBF IN718 specimens.
引用
收藏
页码：211 / 224
页数：14
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