个人信息Personal Information
学历：博士研究生毕业
学位：工学博士学位
性别：男
学科：力学. 航空宇航科学与技术. 材料科学与工程. 机械工程. 冶金工程. 先进制造. 航空工程. 材料工程. 冶金工程. 机械工程. 固体力学
多尺度与微纳米力学，梯度结构材料，界面力学，固体本构关系，应变梯度理论，晶体塑性有限元，离散位错动力学，分子动力学，高熵合金，大数据与机器学习，材料基因，极端力学，高性能材料
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2021-01-12 合作论文“Effect of Re on mechanical properties of single crystal Ni-based superalloys: Insights from first-principle and molecular dynamics”在Journal of Alloys and Compounds期刊在线发表
Highlights
•Combining first-principle, molecular dynamics and experimental methods.
•Quantitative understanding on the effect of Re on lattice parameter, stacking faults and dislocations.
•Systematic analysis on the relation between Re associated mechanisms and mechanical properties.
Abstract
Re is one of the newly added key elements of single crystal Ni-based superalloys for advanced aero-engine turbine blades. The mechanisms that how Re influences the mechanical behavior of single crystal Ni-based superalloys are still debatable. In the present work, we trace back to some Re associated fundamental aspects affecting mechanical behavior by experiments, first-principle and molecular dynamics methods. The distribution of Re, the effect of Re on lattice parameter, stacking fault energy, elastic and plastic deformations at different temperatures are systematically analyzed. The results not only quantitatively reveal some significant mechanisms behind the Re effect, but also bring inputs for larger scale simulation methods. Based on the simulation results, the influence of Re on long-term deformation property of single crystal Ni-based superalloys is reasonably discussed in the viewpoint of thermodynamic and dislocation dynamics.
Link
https://doi.org/10.1016/j.jallcom.2021.158643