Effect of Deformation Temperature on Low∑CSL Grain Boundary Content of 06Cr23Ni13 Stainless Steel
The hot deformation behavior of the 06Cr23Ni13 stainless steel at different deformation temperatures and strain rates of 0.01 s-1 is studied by Gleeble-3500 instrument,and the effect of deformation temperature on grain boundary content of low coincidence lattice(CSL)is investigated.The results show that the recrystallization degree of the 06Cr23Ni13 stainless steel in-creases with the increase of deformation temperature.When the deformation temperature is 1 150 ℃,the recrystallization degree of microstructure is the highest,and the austenitic grain is equiaxed.According to the statistics of special grain boundaries of the 06Cr23Ni13 stainless steel under different deformation temperatureby Channel 5 software,the content of the low ∑CSL grain boundaries increases firstly and then decrease with the increase of the dynamic recrystallization degree during the hot deformation process,which reaches its maximum at 1 150 ℃.The low ∑CSL grain boundaries of the 06Cr23Ni13 stainless steel are mainly composed of ∑3,∑9 and ∑27 grain boundaries.
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