期刊
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
卷 257, 期 -, 页码 234-243出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jmatprotec.2018.02.034
关键词
Additive manufacturing; Powder-bed fusion; Selective laser sintering; Selective laser melting; Direct metal laser sintering; Direct metal laser melting
资金
- U.S. Department of Energy [DE-AC52-07NA27344]
The evaluation of simple thermal model of selective laser melting (SLM) process shows that the temperature distribution in the sample is characterized by two dimensionless parameters: normalized enthalpy and the ratio of dwell time to the thermal diffusion time. We demonstrated that the melt depth data taken for different machines for different materials collapsed in one curve, making possible to rescale the optimal processing parameters between the different materials and machines. The melt pool depth, width and the length are the universal function of these two parameters. Within the operational range of parameters for SLM these functions can be interpolated by the simple algebraic expressions given the possibility to reduce the calculation of the melt pool characteristic to spreadsheet model.
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