形变对无取向硅钢50W470组织和力学性能的影响  

Effect of Deformation on Structure and Mechanical Properties of Non- Orientation Silicon Steel 50W470

作　　者：孙述利[1] 郭东城[1] 刘江[2] 宋文军[2] 杨宗翰[2] 罗玉田[2] 

机构地区：[1]太原科技大学材料学院,太原030024 [2]太原钢铁有限公司,太原030003

出　　处：《特殊钢》2005年第5期14-15,共2页Special Steel

基　　金：太原科技大学青年基金项目资助

摘　　要：2.0～2.8 mm的50W470无取向硅钢(%:≤0.005C,1.45～1.65Si,0.2～0.4Al)经20辊森吉米尔可逆式轧机5道次轧制成0.5 mm的轧卷,各道次压下率15%～35%,总压下率为75%～80%.试验结果表明,经5道次轧制后钢中晶粒全部细纤维化,抗拉强度由坯料的480～560 MPa增加至885～905 MPa,伸长率δ5由25%～28%降至0.7%～0.8%.经X射线衍射谱线型分析表明,经5道次轧制后的无取向硅钢50W470中存在残余内应力(第2类内应力)是形成冲片椭圆度的重要原因.The 0.5mm non-orientation silicon steel 50W470（≤0.005C,1.45～1.65Si,0.2～0.4Al）coil was rolled by twenty.high Sendzimir mill from 2.0～2.8mm plate with pass reduction 15%～35% and total reduction 75%～80%.The test results showed that with 5 pass rolling the grains in steel were all fibration,the tensile strength incrensed to 885～905 MPa from 480～560MPa rolling billet,elongation δ5 decreased to 0.7%～0.8% from 25%～28%.And the X-ray diffraction spectrum analysis showed that with 5 pass rolling the residual stress （secondary stress） existed in non-orientation silicon steel 50W470 which was main cause to form elliptical type stamping.

关 键 词：无取向硅钢50W470 形变 组织 力学性能 无取向硅钢 残余内应力 X射线衍射谱 可逆式轧机 细纤维化 抗拉强度 

分 类 号：TG113[金属学及工艺—物理冶金]