期刊
MATERIALS CHARACTERIZATION
卷 171, 期 -, 页码 -出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.matchar.2020.110818
关键词
Powder recycling; Inconel 718; Damage tolerability; Laser powder bed fusion; Elevated temperature
类别
资金
- Engineering Research Center (ERC) Program through National Research Foundation of Korea (NRF) - Ministry of Education, Science and Technology [2018R1A5A6075959]
- Industrial Technology Innovation Program - Ministry of Trade, Industry & Energy (MOTIE, Korea) [20009993]
- Technology Innovation Program - Ministry of Trade, Industry & Energy (MOTIE, Korea) [20002700]
- Korea Evaluation Institute of Industrial Technology (KEIT) [20009993, 20002700] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
In this study, Inconel 718 specimens were produced using the L-PBF process with both virgin and recycled powder to investigate the impact of powder recycling on damage tolerability. It was observed that the K-Q value slightly decreased under recycled powder conditions.
Inconel 718 (IN718) specimens were prepared by laser powder bed fusion (L-PBF) process using either virgin or recycled powder to investigate the effect of powder recycling on the damage tolerability (i.e., fracture toughness (K-Q) and fatigue crack propagation (FCP)) at 25 and 650 degrees C. It was found that the K-Q value of L-PBF IN718 specimen decreased marginally, while the FCP behavior was unaffected, with powder recycling at 25 and 650 degrees C. Detailed fractographic and micrographic analyses were conducted to identify the reason for two different trends in static and dynamic damage tolerability of L-PBF IN718 specimen made from virgin and recycled powder.
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