金属激光熔化沉积过程双时间步长法多尺度物理耦合场的数值模拟*

doi:10.13385/j.cnki.vacuum.2020.04.16

Abstract

Abstract: For machining metal parts by laser metal melting deposition method, if propose a new method to understand the relationship between the macro processing parameters and the evolution of internal micro structure during the laser metal melting deposition process, the micro structure of the samples can be controlled and the mechanical properties will be thus greatly improved. In this paper, a multi-scale and couple physical field was built by using a double time steps method, and the simulation result was validated by processing experiment using the same processing parameters. At last, a good result was obtained, which is proved to have the guiding significance for selecting LMDS process.

Key words: laser metal melting deposition, numerical simulation, multi-scale-couple physical field model, titanium alloys

CLC Number:

TG146.2TF124

KONG Yuan, ZHANG Hai-ou, GAO Jian-cheng, CHEN Xi, WANG Gui-lan. Numerical Simulation of Multi-Scale Double Time Steps Multi-Physical Fields During Laser Metal Melting Deposition Process[J].VACUUM, 2020, 57(4): 77-84.

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Numerical Simulation of Multi-Scale Double Time Steps Multi-Physical Fields During Laser Metal Melting Deposition Process

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