期刊
ADDITIVE MANUFACTURING
卷 56, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.addma.2022.102914
关键词
Laser powder bed fusion; AlSi10Mg; Microstructure; Strength; Ductility; Fatigue
资金
- Fundamental Research Funds for the Central Universities, China [2021XXJS116]
- Service public de Wallonie Economie Emploi Recherche (SPW-EER) [1810016]
- European Research Council (ERC) [716678]
This review article summarizes the recent progress in the characterization of microstructure, assessment of strengthening and damage mechanisms, and evaluation of fracture and fatigue resistance of LPBF Al alloys. It aims to build a comprehensive link between mechanical performance and microstructure and provides an outlook on further efforts needed to maximize the potential of mechanical performance through optimizing microstructure.
As important structural materials widely used in aerospace and automotive industries, aluminum alloys are perfect candidates for development of laser metal additive manufacturing (AM). Amongst AM aluminum alloys, laser powder bed fusion (LPBF) AlSi10Mg has received substantial attention due to its good printability and relatively low cost. Great efforts have been devoted to seek optimum process parameters that can enhance mechanical performance. However, a large scattering of material properties arises from the literature data, especially for the as built state, thus casting a shadow over further development of LPBF Al alloys. This review article aims to summarize the recent progresses on the characterization of microstructure, assessment of strengthening and damage mechanisms, evaluation of fracture and fatigue resistance, and attempts to build a primary comprehensive link between mechanical performance and microstructure for the as built state. Following the analysis of the state of the art, the review will finally provide an outlook on additional efforts needed to quantify the microstructure-property relation, based on which maximizing the potential of mechanical performance through optimizing microstructure may be achieved.
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