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对一定冷变形00Cr22Ni5Mo3N双相不锈钢再结晶退火后的显微组织进行了研究。结果表明:退火温度从1000℃开始依次增加50℃至1200℃,通过XRD的检测,确定了试样组织由α、γ两相组成,在再结晶退火温度下没有新相产生;经退火处理后得到大小均匀的等轴晶;在较高退火温度下的铁素体的体积分数明显比在较低退火温度下的铁素体的体积分数要高;较低退火温度比较高退火温度的晶粒细化的效果要好,在较高退火温度下导致晶粒的长大;不同的再结晶退火温度与试样的显微硬度表现出复杂关系。
The microstructure of a certain cold deformation 00Cr22Ni5Mo3N duplex stainless steel after recrystallization annealing was studied. The results show that the annealing temperature increases from 50 ℃ to 1200 ℃ in order from 1000 ℃, and the structure of α, γ phases is confirmed by XRD. There is no new phase at the recrystallization annealing temperature. After annealing The equiaxed grains with uniform size were obtained. The volume fraction of ferrite at higher annealing temperature was obviously higher than the volume fraction of ferrite at lower annealing temperature. The grain size of lower annealing temperature and annealing temperature was higher The refinement effect is better, resulting in the grain growth at higher annealing temperatures; the different recrystallization annealing temperatures show a complex relationship with the sample’s microhardness.