期刊
TMS 2019 148TH ANNUAL MEETING & EXHIBITION SUPPLEMENTAL PROCEEDINGS
卷 -, 期 -, 页码 311-318出版社
SPRINGER INTERNATIONAL PUBLISHING AG
DOI: 10.1007/978-3-030-05861-6_28
关键词
Columnar-to-equiaxed transition; AlSi10Mg; Phase-field simulation; Direct metal laser sintering (DMLS)
资金
- Natural Sciences and Engineering Research Council of Canada (NSERC) [RGPIN-2016-04221]
- New Brunswick Innovation Foundation (NBIF) [RIF2017-071]
We employed phase-filed models to simulate microstructure evolution and solidification behaviour of AlSi10Mg alloy produced using direct metal laser sintering (DMLS) technique. We explored numerically, the dendritic morphology and orientations for a range of cooling rates and thermal gradients, focusing on the columnar-to-equiaxed transition (CET) of DMLS-AlSi10Mg. A new efficient numerical approach was also introduced to model the heterogenous nucleation of inoculant particles that triggers CET. The results of this work are expected to provide a reference for a future study on the effect of the building direction and scanning strategy on the microstructure and texture of DMLS-AlSi10Mg.
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