期刊
MATERIALS SCIENCE AND TECHNOLOGY
卷 32, 期 7, 页码 617-628出版社
TAYLOR & FRANCIS LTD
DOI: 10.1179/1743284715Y.0000000012
关键词
Additive manufacturing; Selective laser melting; Metal matrix composites; Marangoni flow
资金
- National Natural Science Foundation of China [51322509]
- Outstanding Youth Foundation of Jiangsu Province of China [BK20130035]
- Program for New Century Excellent Talents in University [NCET-130854]
- Science and Technology Support Program (The Industrial Part), Jiangsu Provincial Departfoment of Science and Technology of China [BE2014009-2, BE2014009-1]
- Program for Distinguished Talents of Six Domains in Jiangsu Province of China [2013-XCL-028]
- Fundamental Research Funds for the Central Universities [NE2013103, NP2015206]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
The simulation of thermodynamic behaviours of reinforcing particles and reinforcement/matrix interface during selective laser melting of particle reinforced metal matrix composites was presented. The transition from powder to solid phase, the surface tension and the density change were taken into account. It showed that the operating temperature and the resultant turbulent intensity increased with increasing the applied linear energy density, giving rise to the high instability of the molten pool. The gravity and capillary forces play a crucial role in the rearrangement and the attendant distribution state of the reinforcing particles. The particle morphology and distribution state in the as processed parts were experimentally studied, which were in good agreement with the results predicted by simulation.
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