| Effect of dislocation configuration on non—equilibrium boron segregation during cooling |
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| 引用本文： | HuaiyangCui BingCao 等. Effect of dislocation configuration on non—equilibrium boron segregation during cooling[J]. 北京科技大学学报(英文版), 2002, 9(2): 107-113 |
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| 作者姓名： | HuaiyangCui BingCao 等 |
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| 作者单位： | [1]DepartmentofMaterialsPhysics,UniversityofScienceandTechnologyBeijing100083,China；DepartmentofAppliedPhysics,BeijingUniversityofAeronauticsandAstronautics,Beijing,100083,China [2]Edit,UniversityofScienceandTechnologyBeijing100083,China；DepartmentofAppliedPhysics,BeijingUniversityofAeronauticsandAstronautics,Beijing,100083,China |
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| 摘 要： | Different densities and configurations of crystal defects were obtained in an austenitic Fe-30% Ni alloy and an ultra low carbon bainitic(ULCB) alloy by undergoing different deformations and annealing treatments at high temperatures.Boron segregation on grain boundaries and subgrain boundaries during air-cooling were revealed by means of the particle tracking autoradiography technique.It is found that non-equilibrium segregation is resisted in deformed grains after recovery and polygonization,borondepleted zones seem to be quite clear in recrystallized grains than those in deformed original grains during cooling.Subgrain boundaries and polygonized dislocation cells have a significant effect on non-equilibrium boron segregation during the air-cooling.The results implicates that dislocation configuration is a more important factor affecting boron segregation at grain boundaries rather than the density of defects itself in the grain.
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| 关 键 词： | 位错 硼分离 再结晶 |
Effect of dislocation configuration on non-equilibrium boron segregation during cooling |
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| Huaiyang Cui,Bing Cao,Xinlai He. Effect of dislocation configuration on non-equilibrium boron segregation during cooling[J]. Journal of University of Science and Technology Beijing, 2002, 9(2): 107-113 |
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| Authors: | Huaiyang Cui Bing Cao Xinlai He |
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| Abstract: | Different densities and configurations of crystal defects were obtained in an austenitic Fe-30%Ni alloy and an ultra low carbon bainitic(ULCB) alloy by undergoing different deformations and annealing treatments at high temperatures. Boron segregation on grain boundaries and subgrain boundaries during air-cooling were revealed by means of the particle tracking autoradiography technique. It is found that non-equilibrium segregation is resisted in deformed grains after recovery and polygonization, boron-depleted zones seem to be quite clear in recrystallized grains than those in deformed original grains during cooling. Subgrain boundaries and polygonized dislocation cells have a significant effect on non-equilibrium boron segregation during the air-cooling. The resuits implicates that dislocation configuration is a more important factor affecting boron segregation at grain boundaries rather than the density of defects itself in the grain. |
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| Keywords: | boron segregation recrystallization dislocation |
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