固溶处理对新型 Fe-Ni-Cr-Ti 合金组织及性能的影响.

The new type Fe-Ni-Cr-Ti alloy mainly used in pressure sensors. Follow this new type pressure sensor’s characteristics of ultra-thin wall, in order to get the accuracy level of leak rate below 1×10-7Pa·L/S and the fitting precision reach 0.01%FS, the raw material bar with fine and uniform microstructure and consistency of performance plays a key role. This paper research the influence on microstructure of the heat treatment process with different solution temperature and different solution time. The results shows that the grain size of the raw material bar quenched at 980°C×60 minutes before a certain cold deformation is 5 or smaller, which achieve the desired goal of fine and uniform microstructure,it is beneficial to prepare sensors with excellent vibration characteristics,and satisfy the element’s performance index of leak rate fitting precision. [ABSTRACT FROM AUTHOR]