冷轧变形率对超纯铁素体不锈钢Cr22Mo织构和成形性能的影响  

Effect of Cold Rolling Reduction on Texture and Formability of Ultra-Clean Ferrite Stainless Steel Cr22Mo

作　　者：周杰[1,2] 赵振铎[1,2] 廉晓洁[1,2] 范光伟[1,2] 王立新[3] 张晶晶[1,2] 成生伟 Zhou Jle;Zhao Zhenduo;Lian Xiaojie;Fan Guangwei;Wang Lixin;Zhang;Jlng mg;Cheng Shengwei(l State Key Laboratory.of Advanced Stainless Steel Material;Technology Center,Taiyuan Iron and Steel（Group）Co Ltd,Taiyuan 030003;Taiyuan Iron and Steel（Group）Co Ltd,Taiyuan 030003)

机构地区：[1]太原钢铁集团有限公司先进不锈钢材料国家重点实验室,太原030003 [2]太原钢铁集团有限公司先进不锈钢材料国家重点实验室2技术中心,太原030003 [3]太原钢铁集团有限公司,太原030003

出　　处：《特殊钢》2018年第5期70-74,共5页Special Steel

摘　　要：试验研究的Cr22Mo钢(/%:0.005C,0.40Si,0.20Mn,0.020P,0.010S,22.0Cr,1.0Mo,0.41Cu,0.14Nb,0.19Ti,0.0120N)经90 t BOF-VOD-LF-200 mm板坯连铸-热轧成5.0 mm板-退火并冷轧成1.5～0.5 mm板,冷轧变形率为70%～90%,冷轧板经1000℃退火。利用光学显微镜、X-射线衍射仪(XRD)和万能拉伸试验机研究了冷轧变形率对Cr22Mo钢组织、织构和力学性能的影响。结果显示,随着冷轧变形率的增大,冷轧和冷轧退火板的组织细化,再结晶织构{111}<112>强度增加,平均塑性应变比(?)值增加,平面各向异性△r值降低,冷轧压下率的增大显著改善了Cr22Mo钢冷轧退火薄板的成形性能。The tested and studied steel Cr22Mo （/%： 0. 005C, 0.40Si, 0. 20Mn, 0. 020P, 0. 010S, 22.0Cr, 1.0Mo, 0.41Cu, 0. 14Nb, 0. 19Ti, 0. 012 ON） is produced by 90 t BOF-VOD-LF-200 mm slab casting-hot rolling to 5.0 mm plate-annealing and cold rolling to 1.5 ~ 0. 5 mm sheet with cold rolling reduction 70% - 90%, and the cold-rolled sheet is annealed at 1 000 ~C. The effect of cold roiling reduction on structure, texture and mechanical properties of steel Cr22Mo is studied by optical microscope, X-ray diffractometer （XRD） and universal tensile testing machine. The results show that with increasing cold rolling reduction the structure of cold-rolled and cold-rolled-annealed sheet is finer, the in- tensity of recrystallized texture I 111 I 〈 112 〉 increases, average plastic strain ratio r value increases and the plane anisot- ropy /kr decreases, and the increase of cold rolling reduction markedly improves the formability of cold-rolled annealed sheet of steel Cr22Mo.

关 键 词：超纯铁素体不锈钢Cr22Mo 组织 成形性 织构 冷轧压下率 

分 类 号：TG142.71[一般工业技术—材料科学与工程]