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Effect of Powder Recycling on Environment-Assisted Fracture of Inconel 718 Alloy Fabricated by Laser Powder Bed Fusion
- Kim, Soyoung;
- Goto, Masahiro;
- Kim, Sangshik
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7초록
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.
키워드
STRESS-CORROSION CRACKING; STAINLESS-STEEL; MECHANICAL-PROPERTIES; BEHAVIOR; FATIGUE; MICROSTRUCTURE; SUSCEPTIBILITY; GROWTH; REUSE; PROPAGATION
- 제목
- Effect of Powder Recycling on Environment-Assisted Fracture of Inconel 718 Alloy Fabricated by Laser Powder Bed Fusion
- 저자
- Kim, Soyoung; Goto, Masahiro; Kim, Sangshik
- 발행일
- 2022-01
- 유형
- Article
- 권
- 53
- 호
- 1
- 페이지
- 211 ~ 224