应力-应变曲线形状参数与材料硬化指数的关系

The Relation of Material Hardening Exponent and Shape Parameters of Stress-strain Curve

在高温拉伸应力-应变曲线测试的基础上,探讨材料手册给出的硬化指数n与稳定性计算中所用形状参数n之间的关系,并用实验数据进行验证。

Based on the measurement of stress-strain curves at high temperature the relation between material hardness from data manual and the shape parameter used in stability evaluation was investigated. The relation was supported by the test data. The results show that a reciprocal relation exist in the hardening exponent and curvature shape parameter. But it is not very exact in engineering application.