金属“力学性能-拉伸应变速率”曲线

Mechanical property-tensile strain rate curve of metals

金属弹性变形的微观理论揭示出测试不确定性是拉伸试验的弹性变形阶段张应力改变了被测金属原子水平上的微观结构引起的。在此基础上,提出了一个拉伸试验新技术体系框架:测试一定温度下"力学性能-拉伸应变速率"曲线,表征被测金属的原始力学性能,服役力学性能和金属加工变形过程中的力学性能。

The microcosmic theory of metal elastic deformation reveals that the uncertainty of measurement is caused by the change of microstructures at the atomic level of the tested metal during the elastic deformation stage of the tensile test.On this basis,a new system framework of tensile test is proposed,which can be used to test the curve of'mechanical properties-tensile strain rate'at a certain temperature to characterize the original mechanical properties,service mechanical properties and mechanical properties during metal processing and deformation.