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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2023.3
- 수록면
- 767 - 776 (10page)
- DOI
- 10.1007/s12540-022-01247-z
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초록· 키워드
오류제보하기
Functionally graded material (FGM), showing special regular structural and performance changes along specific direction,is appropriate to be fabricated by wire arc additive manufacturing (WAAM). And Inconel625-high strength low alloy(HSLA) steel FGM has potential for replacing the dissimilar joints to avoid the drastic variation in the multi-material interface.However, due to the continuity of compositional change, the Inconel625-HSLA steel FGM fabricated by WAAM withiso-variable transition strategy (ITS) would contain the graded regions with weak performance or detrimental precipitates.Whereas these unfavourable graded regions can be addressed through transition strategy optimization. In this research,an optimized transition strategy (OTS) was applied to modify the Inconel625-HSLA steel FGM fabricated by WAAM.Weak-performance graded regions of the FGM fabricated by ITS were eliminated by OTS. Microstructures, precipitationbehavior and mechanical properties in room-temperature and 700 ℃ of the FGMs manufactured in two transition strategieswere compared. The effect of Laves phases in mechanical properties of the FGM was clarified. After using OTS, the averageroom-temperature tensile strength of the FGM was improved from 449 to 509 MPa, and average tensile strength in 700 ℃was improved from 403 to 464 MPa.
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