摘要
材料的使用性能很大程度上由材料的微观组织结构决定,而理想的微观组织结构可通过控制成形工艺实现。增材制造是典型的非平衡凝固工艺,这也是一种新兴的近净成形制造技术。在非平衡凝固过程中,枝晶生长难以直接观测,相场模拟可有效预测晶体结构随工艺变化的动态演化规律。通过总结相场模拟在增材制造中的应用,并指出其发展趋势,可为增材制造快速凝固中的相场模拟研究提供参考。
The property of materials is largely controlled by its microstructure,and the ideal microstructure can be realized by optimizing the forming process.Additive manufacturing is a typical non-equilibrium solidification process,which is also an emerging near-net-shape manufacturing technology.In the non-equilibrium solidification process,dendrite growth is difficult to directly observe,and phase field simulation can effectively predict the dynamic evolution of crystal structure with process change.This paper summarizes the application of phase field simulation in additive manufacturing and points out its development trend,which can provide a reference for the phase field simulation research in the rapid solidification of additive manufacturing.
作者
邱义
王俊升
QIU Yi;WANG Junsheng(School of Materials Science and Engineering,Beijing Institute of Technology,Beijing 100081,China;Advanced Research Institute of Multidisciplinary Science,Beijing Institute of Technology,Beijing 100081,China)
出处
《航空制造技术》
2020年第16期50-58,共9页
Aeronautical Manufacturing Technology
基金
装备预研重点实验室基金项目(6142902180305)。
关键词
相场法
数值模拟
非平衡凝固
增材制造
微观组织
Phase field method
Numerical simulation
Non-equilibrium solidification
Additive manufacturing
Microstructure
