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金属增材制造的相场模拟现状及展望
Recent Progress and Perspectives of Phase-Field Modelling in Metal Additive Manufacturing
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- DOI:
- 作者:
- 刘 佳，高建宝，李志诚，马 飒，钟 静，张利军
LIU Jia, GAO Jianbao, LI Zhicheng, MA Sa, ZHONG Jing, ZHANG Lijun
- 作者单位:
- 中南大学粉末冶金国家重点实验室
State Key Lab of Powder Metallurgy, Central South University, Changsha 410083, China
- 关键词:
- 金属增材制造;相场法;有限界面耗散相场模型;微结构演化;合金设计;
metal additive manufacturing; phase-field methods; finite interface dissipation; microstructure evolution; alloy design
- 摘要:
- 金属增材制造涉及传热与传质、相变、晶粒生长、熔体流动等多个复杂物理过程,实现其微结构演变的定量模拟难度大。相场法采用序参量可描述气/液/固相、晶粒形状/取向等复杂微结构,且能直接引入描述各物理过程的场变量(如浓度、温度、熔体流速等),在金属增材制造过程微结构模拟方面显示出巨大优势。本文简要介绍了相场法的发展和分类,归纳了不同相场模型的特点,详细综述了不同相场模型在金属增材制造凝固过程中微结构演化模拟的研究进展,重点探讨了不同相场模型在金属增材制造领域应用的优势与局限性。最后,展望了相场法在金属增材制造领域的应用前景,并指出其发展方向。
Metal additive manufacturing involves many complex physical processes such as heat and mass transfer, phase
transformation, grain growth, fluid flow, etc. It is difficult to quantitatively simulate the microstructure evolution of metal
additive manufacturing. The phase-field method can describe complex microstructures such as the gas/liquid/solid phase
and grain shape/orientation by using order parameters, and directly introduce field variables describing physical processes
(such as concentration, temperature, fluid flow rate, etc.), showing great advantages in the simulation of the microstructure
of the metal additive manufacturing process. In this paper, the development and classification of the phase-field method are
briefly introduced, the characteristics of different phase-field models are summarized, and the research progress of different
phase-field models in the simulation of microstructure evolution during the solidification process of metal additive
manufacturing is reviewed in detail. The advantages and limitations of different phase-field models in the application of
metal additive manufacturing are emphatically discussed. Finally, the application prospect of the phase-field method in
metal additive manufacturing is prospected, and its development direction is pointed out.