Stress‐strain behaviour of the case hardening steel 20MnCr5 regarding different microstructures
Stress‐strain behaviour of the case hardening steel 20MnCr5 regarding different microstructures
复制标题
表面硬化钢 20MnCr5 不同显微组织的应力应变行为
DOI：
10.1002/mawe.200900475
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发表时间：
2009
影响因子：
1.1
通讯作者：
H. Zoch
中科院分区：
文献类型：
--
作者：
M. Dalgiç;A. Irretier;H. Zoch
在协作研究中心SFB 570中，失真被视为系统属性。这意味着必须在组件的整个加工过程中对其进行调查。模拟是预测和采取措施减少变形的有力工具，但可靠的材料数据是这些模拟的限制因素之一。在这些研究中，表面硬化钢20MnCr5的材料行为通过热物理材料值、相变参数和应力应变曲线来描述。除温度外，组织对变形曲线也有很大影响。本文的主题是通过适当的方程描述应力应变行为作为温度和碳含量依赖的微观结构的函数。因此，针对不同碳含量进行拉伸试验以获得稳定的微观结构，但也针对亚稳奥氏体等条件进行拉伸试验。
Within the Collaborative Research Centre SFB 570 distortion is treated as a system attribute. This means that it has to be investigated during the entire processing of a component. Simulation is a powerful tool to predict and to take action on reducing distortion, but reliable materials data are one of the limiting factors of these simulations.Within these investigation, the material behaviour of the case hardening steel 20MnCr5 is described by thermo physical material values, parameters regarding the transformation and by the stress‐strain curve. Besides the temperature the microstructure has a substantial influence on the deformation curve. The subject of this paper is a description of the stress‐strain behaviour as a function of microstructure in dependence of the temperature and the carbon content by suitable equations. Therefore, tensile tests were carried out regarding different carbon contents for stable microstructures, but also conditions like the metastable austenite.