Phase field modeling of dislocation transmission across a coherent interface

机译：相干界面上位错传输的相场建模

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The mechanical properties of metallic multilayer materials such as strength and ductility aremainly determined by the interaction between dislocations and interfaces.The phase field microelasticitymodeling and simulation are carried to investigate a glide dislocation transmission acrossa coherent slipping interface.The simulated results show that the dislocation at the slipping interfaceis nucleated due to the stress enhanced by the glide dislocation under the shear loading.Forthe slipping interfaces with different unstable stacking fault energy (USFE),the core structures ofthe nucleated interfacial dislocations are similar,however the interfacial dislocation at the interfaceswith lower USFE has a larger Burgers vector,and exerts a lager attractive force on the glidedislocation,and thus leads a strong barrier to the dislocation transmission.

机译：金属多层材料的力学性能如强度和延性主要由位错与界面之间的相互作用决定。相场微弹性建模和模拟研究了滑移位错在相干滑移界面上的传输。由于剪切载荷作用下滑移错位增加了应力，使滑动界面成核。对于具有不同不稳定堆垛层错能（USFE）的滑动界面，有核界面错位的核心结构是相似的，但是具有较低USFE的界面处的界面错位具有较大的Burgers向量，对滑脱位错施加更大的吸引力，从而对位错传递产生强大的障碍。

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来源
《International conference on fracture》|2013年|1|共1页
会议地点 Beijing(CN)
作者
Songlin Zheng; Yong Ni; Linghui He;
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作者单位

CAS Key Laboratory of Mechanical Behavior and Design of Materials and Department of Modern Mechanics University of Science and Technology of China Hefei Anhui 230026 China;

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关键词
dislocation; coherent interface; slip transmission; strength; phase field;

机译：错位;连贯的界面；滑差传递强度;相场;

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专利

1. Phase field modeling of a glide dislocation transmission across a coherent sliding interface [J] . Zheng Songlin, Ni Yong, He Linghui Modelling and simulation in materials science and engineering . 2015,第3期

机译：滑移位错传输在相干滑动界面上的相场建模
2. A phase field dislocation dynamics model for a bicrystal interface system: An investigation into dislocation slip transmission across cube-on-cube interfaces [J] . Zeng Y., Hunter A., Beyerlein I. J., International Journal of Plasticity . 2016,第Null期

机译：双晶界面系统的相场位错动力学模型：跨立方晶间界面的位错滑移传输研究
3. SOLUTE SEGREGATION AND COHERENT NUCLEATION AND GROWTH NEAR A DISLOCATION--A PHASE--FIELD MODEL INTEGRATING DEFECT AND PHASE MICROSTRUCTURES [J] . S. Y. HU, L. Q. CHEN Acta Materialia . 2001,第3期

机译：位错附近的溶质偏析和相干成核和生长-结合了缺陷和相微结构的相场模型
4. Phase Field Modeling of Dislocation Network Coarsening, Dislocation - Impurity and Dislocation - Precipitate Interactions [C] . C. Shen, A. Kazaryan, P. M. Anderson, International Conference on Computational Nanoscience and Nanotechnology(ICCN 2002); 20020421-25; San Juan,PR(US) . 2002

机译：位错网络粗化，位错-杂质和位错-沉淀相互作用的相场建模
5. Tribological interfaces studied by an analytical dislocation model and in-situ transmission electron microscopy. [D] . Merkle, Arno Peter. 2007

机译：通过分析性位错模型和原位透射电子显微镜研究了摩擦学界面。
6. Spiral Patterns of Dislocations at Nodes in (111) Semi-coherent FCC Interfaces [O] . Shuai Shao, Jian Wang, Amit Misra, -1

机译：（111）半相干FCC接口中节点处的位错螺旋模式
7. Concurrent interface shearing and dislocation core change on the glide dislocation-interface interactions: a phase field approach [O] . Songlin Zheng, Yong Ni, Linghui He 2015

机译：并行界面剪切和位错核心改变滑动位错 - 界面相互作用：相场方法
8. Interface Propagation and Microstructure Evolution in Phase Field Models of Stress-Induced Martensitic Phase Transformations [R] . Levitas, V. I., Lee, D., Preston, D. L. 2010

机译：应力诱发马氏体相变相场模型中的界面传播和微结构演变

Phase field modeling of dislocation transmission across a coherent interface

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