固溶处理是指将不锈钢加热到高温单相区恒温保持，使过剩相充分溶解到固溶体

Solution treatment refers to a heat treatment process in which stainless steel is heated to a high temperature single-phase region and maintained at a constant temperature, so that the excess phase is fully dissolved into the solid solution and then rapidly cooled to obtain a supersaturated solid solution. <br>The solution treatment is to dissolve the carbides and γ' in the matrix to obtain a uniform supersaturated solid solution, which is convenient for re-precipitating fine-grained and uniformly distributed carbides and γ' and other strengthening phases during aging. stress, causing the alloy to recrystallize. <br>Secondly, the solution treatment is to obtain a suitable grain size to ensure the high temperature creep resistance of stainless steel. <br>The temperature range of solution treatment is about 980~1250℃, which is mainly selected according to the precipitation and dissolution rules of stainless steel and the requirements of use, so as to ensure the necessary precipitation conditions and certain grain size of the main strengthening phase.

Solid solution treatment refers to the heat treatment process of heating stainless steel to the high-temperature single-phase zone and maintaining a constant temperature, so that the excess phase is fully dissolved in the solid solution and then cooled quickly to obtain supersaturated solid solution.<br>Solid solution treatment is to dissolve the carbides in the matrix γ’ Equal to obtain uniform supersaturated solid solution, which is convenient for re precipitation of fine and evenly distributed carbides and particles during aging γ’ At the same time, the stress caused by cold and hot processing is eliminated to recrystallize the alloy.<br>Secondly, solution treatment is to obtain appropriate grain size to ensure the creep resistance of stainless steel at high temperature.<br>The temperature range of solid solution treatment is about 980 ~ 1250 ℃, which is mainly selected according to the law of phase precipitation and dissolution in stainless steel and the application requirements, so as to ensure the necessary precipitation conditions and certain grain size of the main strengthening phase.

Solution treatment refers to the heat treatment process in which stainless steel is heated to a high temperature and kept at a constant temperature in a single-phase area, so that the excess phase is fully dissolved in the solid solution and then cooled rapidly to obtain supersaturated solid solution. The purpose of solid solution treatment is to dissolve carbide and γ′ in matrix to obtain uniform supersaturated solid solution, facilitate re-precipitation of strengthening phases such as carbide and γ′ with fine particles and uniform distribution during aging, and at the same time eliminate the stress caused by cold and hot working, and make the alloy recrystallize. Secondly, the solution treatment is to obtain suitable grain size to ensure the high temperature creep resistance of stainless steel. The temperature range of solid solution treatment is about 980~1250℃, which is mainly selected according to the precipitation and dissolution rules of phases in stainless steel and application requirements, so as to ensure the necessary precipitation conditions and certain grain size of the main strengthening phases.