Investigation on Recrystallization Annealing and Formability of 00Cr12Ti Ferritic Stainless Steel
ZHANG Hai1,2，JIANG Haitao1，TANG Di1
1. National Engineering Research Center for Advanced Rolling Technology, University of Science and Technology Beijing, Beijing 100083, China;2. Tangshan Iron and Steel Group Company, Tangshan 063016, Hebei,China
Abstract：Mechanical properties of recrystallization annealed 00Cr12Ti ferritic stainless steel sheet of 1.0 mm in thickness were studied. It was shown that hardness, yield strength, tensile strength and yieldtensile ratio decreased with increase of annealing temperature from 700 ℃ to 800 ℃. While recrystallization annealing temperature was higher than 800 ℃,stable mechanical properties conld be obtained. Many recrystallization grains with {111} orientation appeared after recrystallization annealing. The values of r0、r45、r90 and r- increased rapidly with increase of annealing temperature above 780 ℃.and r90＞r0＞r45.Between 700 ℃ and 800 ℃, Δr had a little change. But Δr had a sharp increase when the annealing temperature was above 800 ℃,making ear during forming. IE value had same change as r- value via cupping test. And, the good formability of coldrolled 00Cr12Ti ferritic stainless steel sheet conld be obtained via recrystallization annealing.
2008, Vol. 43 
