Kang-Hyun Lee1, Gun Jin Yun1,2,*
CMC-Computers, Materials & Continua, Vol.66, No.1, pp. 87-112, 2021, DOI:10.32604/cmc.2020.012688
Abstract Re-melting process has been utilized to mitigate the residual stress level
in the selective laser melting (SLM) process in recent years. However, the complex consolidation mechanism of powder and the different material behavior after
the first laser melting hinder the direct implementation of the re-melting process.
In this work, the effects of re-melting on the temperature and residual stress evolution in the SLM process are investigated using a thermo-mechanically coupled
finite element model. The degree of consolidation is incorporated in the energy
balance equation based on the thermodynamically-consistent phase-field
approach. The drastic change of material properties due to the variation… More >
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