冷轧变形量对电阻型热双金属R15和R35性能的影响

The Effect of Cold Rolling Deformation on the Properties of Resistance Thermostat Bimetal R15 and R35

本文研究了冷轧变形量对电阻型热双金属R15和R35的界面扩散层厚度、力学性能、比弯曲、温曲率和电阻率等性能的影响。结果表明：扩散层厚度随着冷轧变形量增加近似成比例下降；随着冷轧变形量增加，热双金属的强度上升，延伸率下降，维氏硬度近似呈直线增加，主动层Ni20Mn6和Ni22Cr3的加工硬化速率大于被动层Ni36；冷轧变形量对比弯陷、温曲率和电阻率没有影响。

In this paper, the effect of the cold-rolled deformation on tthe thickness of the interface diffusion layer, mechanical properties, specific curvature, temperature flexivity, and resistivity of resistance thermostat bimetal R15 and R35 was investigated. The results show that the diffusion layer thickness declines approximately proportional to the increase of the cold rolling deformation amount; with the increase of cold deformation, the strength goes up and the elongation declines, the Vickers hardness increases approximately linearly, the work hardening rate of active layer Ni20Mn6 and Ni22Cr3 is greater than passive layer Ni36; cold rolling deformation amount has no effect on specific curvature, temperature flexivity and resistivity.