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

页码：211 / 224

页数：14

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