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

被引：0
|
作者：
Soyoung Kim
Masahiro Goto
Sangshik Kim
机构：
[1] Gyeongsang National University,Department of Materials Engineering and Convergence Technology, ReCAPT
[2] Oita University,Department of Mechanical Engineering
来源：
Metallurgical and Materials Transactions A | 2022年 / 53卷
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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 °C/Ecorr + 0.1 VSCE. 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.
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页码：211 / 224
页数：13
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