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国外文献 > 1.轴承 > 3. 材料与制造 > 材料性能

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标 题： A Neutron Scattering Study on Microstructure and Deformation Behavior in Nitrogen Bearing Austenitic Steels
氮化奥氏体钢中微结构与变形行为的中子散射研究
作 者： Y. Tomota
K. Ikeda
M. Ojima
J. Suzuki
T. Kamiyama
关键词： Austenitic steel  [奥氏体钢]
Nitrogen  [ 氮]
Cluster  [ 集群]
Deformation  [ 变形]
Strain rate  [ 应变率]
Intergranular stress  [ 晶界应力]
In situ neutron diffraction  [ 原位中子衍射]
Small angle neutron scattering  [ 小角中子散射]
出版年： 2007
文集名： THERMEC 2006
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会议名： 5th International Conference on Processing & Manufacturing of Advanced Materials, Part 1
第五届先进材料加工与制造国际会议，第一部分
届 次： 5th
摘 要： Neutron scattering was performed to investigate nano-structure and deformation mechanism in SUS310 steels with different concentrations of nitrogen. The nano-sized cluster is suggested by small angle neutron scattering (SANS). The microstructural change and the generation of intergranular stress with plastic deformation were examined by in situ SANS and in situ Bragg diffractions during tensile loading. It is revealed that the clusters are destroyed by dislocation motion leading to evolve a planar net-work substructure, which yields high intergranular stresses in a high nitrogen bearing steel. Both thermal and athermal stress components of flow stress are increased with increasing of nitrogen content. Hence, the high nitrogen bearing steel exhibits high flow stress with a considerable amount of work-hardening at a high speed deformation. The flow stress is described by the Kocks-Mecking model.

通过中子散射研究了不同氮含量SUS310钢的纳米结构及形变机制。小角中子散射（SANS）表明存在纳米级团簇。在拉伸载荷过程中，结合原位SANS和原位布拉格衍射技术，考察了显微结构的变化以及塑性变形引起的晶粒间应力产生情况。结果表明，这些团簇因位错运动而被破坏，进而形成平面网络亚结构，导致高氮钢中晶粒间的应力显著升高。随着氮含量增加，流动应力中的热应力和非热应力成分均随之增大。因此，高氮钢在高速变形下表现出较高的流动应力，并具有明显的加工硬化效应。流动应力可由Kocks-Mecking模型描述。
中文内容为网络AI翻译，专业术语未必准确，仅供参考。

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