双相材料微观变形行为研究综述

Research Overview on Micro Deformation Behavior of Dual-phase Material

双相材料由于其微观结构上的特殊性使其微观变形行为相对于单相材料而言较为复杂,具体表现为变形过程中具有不同力学性能的两相之间存在着相互协调以及应力应变分配行为,并且影响微观变形行为的因素是多尺度的,目前还无法对其进行定量研究,而单相应力应变关系作为研究双相材料微观变形行为的基础,同样成为当前研究的热点问题。本文对单相应力应变关系的研究进展进行了总结,介绍了获取单相应力应变关系的方法;分别从实验、理论分析和有限元建模3个方面重点阐述了双相材料两相微观变形行为研究现状,简单分析了各种研究方法存在的不足;提出了双相材料两相微观变形行为研究中尚待解决的问题。

The particularity of dual-phase material microstructure makes its micro deformation behavior more complex than single phase material, and the complexity is expressed in stress-strain partitioning and coordination behaviors between two component phases with different properties during the deformation. Moreover, the factors affecting the micro deformation behavior are of multi-scale; therefore it is difficult to conduct quantitatively study at present, and the stress-strain behavior of single phase which is the basis to study the micro deformation behavior of two-phase material is also the hotspot at present. The investigation progress in the stress-strain behavior of single phase is summarized in this paper, and the methods for single-phase stress-strain behavior are introduced. Then the research on micro deformation behavior of dual-phase material from three aspects, which are experiment research, theory analysis and numerical simulation based on finite element method are reviewed. Furthermore, the drawback of each method is analyzed simply. Finally, several unsolved problems regarding the micro deformation behavior of dual-phase material are proposed.