晶界工程对面心立方金属材料性能的影响

Effect of grain boundary engineering on properties of FCC metal materials

对近年来面心立方金属晶界特征分布优化研究进行了总结,从提高晶界比例的工艺方法及影响因素,到晶界的形成机制,对面心立方金属性能产生的影响提出研究成果,并对其中一些参数和理论进行阐述。本文分析了低层错能的面心立方金属材料晶界特征对材料性能的影响,阐述了对室温力学性能、高温力学性能、高温析出行为、高温氧化性能、高温蠕变性能以及材料热腐蚀行为的影响规律,为晶界工程的应用提供了依据。

This paper summarizes the research on the optimization of the feature distribution of face centered cubic metal grain boundary in recent years,and presents the research results from the technological methods and influencing factors to improve the grain boundary ratio,the forming mechanism of grain boundary,and the influence of the properties of face centered cubic metal.In this paper,the influence of grain boundary characteristics of face-centric cubic metal materials with low level of mis-energy on material properties is analyzed,and the influence rules of mechanical properties at room temperature,mechanical properties at high temperature,precipitation behavior at high temperature,oxidation behavior at high temperature,creep behavior at high temperature and thermal corrosion behavior of materials are expounded,which provides a basis for the application of grain boundary engineering.