期刊
CRYSTALS
卷 11, 期 7, 页码 -出版社
MDPI
DOI: 10.3390/cryst11070759
关键词
metal matrix composite; crystal plasticity; brittle damage; ductile damage; micro-mechanical; numerical simulation; stress relaxation; phase transformation
资金
- DAAD Faculty Development for Candidates (Balochistan) [57245990]
- Higher Education Commission of Pakistan (HEC)
- DFG [SFB 799]
The mechanical behavior of newly developed composite materials is studied using a physics-based crystal plasticity model with ductile and brittle damage criteria. The simulation model reveals the interdependence of microstructural deformation phenomena and the influence of zirconia particles on micro-mechanical deformation and damage in the metastable austenite matrix. The predicted trends and patterns of local strain and damage match the results of in-situ tensile tests on similar materials.
The mechanical behavior of newly developed composite materials is dependent on several underlying microstructural phenomena. In this research, a periodic 2D geometry of cast X8CrMnNi16-6-6 steel and 10% zirconia composite is virtually constructed by adopting microstructural attributes from literature. A physics-based crystal plasticity model with ductile damage criterion is used for defining the austenitic steel matrix. The zirconia particles are assigned elastic material model with brittle damage criterion. Monotonic quasi-static tensile load is applied up to 17% of total strain. The simulation results are analyzed to extract the global and local deformation, transformation, and damage behavior of the material. The comprehensively constructed simulation model yields the interdependence of the underlaying microstructural deformation phenomena. The local results are further analyzed based on the interlocked and free regions to establish the influence of zirconia particles on micro-mechanical deformation and damage in the metastable austenite matrix. The trends and patterns of local strain and damage predicted by the simulation model results match the previously carried out in-situ tensile tests on similar materials.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据