00Cr12Ti铁素体不锈钢的再结晶退火与成形性研究  

Investigation on Recrystallization Annealing and Formability of 00Cr12Ti Ferritic Stainless Steel

作　　者：张海[1,2] 江海涛[1] 唐荻[1] 

机构地区：[1]北京科技大学高效轧制国家工程研究中心,北京100083 [2]唐山钢铁集团公司,河北唐山063016

出　　处：《钢铁》2008年第11期74-77,共4页Iron and Steel

摘　　要：研究了1．0mm厚00Cr12Ti冷轧板在再结晶退火工艺条件下力学性能的变化规律。研究结果表明，随着退火温度的升高，维氏硬度、屈服强度、抗拉强度和屈强比均呈快速下降趋势，在超过800℃之后变化不大。再结晶退火后，00Cr12Ti钢拥有较多的{111}取向的晶粒，塑性应变比值r0、r45、r90和r在退火温度超过780℃以后都有较大升高，并且r90〉r0〉r45。在700～800℃之间，平面各向异性△r值变化不大，随后△r值随温度上升急剧升高，因而成形时易产生严重的制耳现象。通过杯突试验发现，杯突值IE与r值的变化相一致，表明00Cr12Ti冷轧板在高温再结晶退火后，可获得良好的成形性能。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 yield-tensile 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 ℃, △r had a little change. But △r 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 cold-rolled 00Cr12Ti ferritic stainless steel sheet conld be obtained via recrystallization annealing.

关 键 词：00Cr12Ti钢 再结晶退火 力学性能 成形性 

分 类 号：TG161[金属学及工艺—热处理]