高磁感取向硅钢高温力学性能与热加工性能  

High temperature mechanical properties and hot working properties of high magnetic orientation silicon steel

作　　者：时朋召 李江波 乔家龙 郭飞虎 仇圣桃[1] Shi Pengzhao;Li Jiangbo;Qiao Jialong;Guo Feihu;Qiu Shengtao(National Research Center of Continuous Casting Technology,Central Iron and Steel Research Institute,Beijing 100081,China;Technology Center,Hunan Valin Lianyuan Iron and Steel Co.,Ltd.,Loudi 417009,Hunan,China)

机构地区：[1]钢铁研究总院连铸技术国家工程研究中心,北京100081 [2]湖南华菱涟源钢铁有限公司技术中心,湖南娄底417009

出　　处：《钢铁钒钛》2023年第4期135-141,共7页Iron Steel Vanadium Titanium

摘　　要：采用Gleeble3800热模拟试验机对高磁感取向硅钢铸坯进行高温拉伸和高温压缩试验,研究温度对高磁感取向硅钢的高温力学性能(抗拉强度和断面收缩率)的影响关系,同时研究了高磁感取向硅钢的热加工性能。结果表明,高磁感取向硅钢的第Ⅰ脆性区温度为熔点~1200℃,第Ⅲ脆性区温度为750℃附近,不存在第Ⅱ脆性区;750℃试样断裂机制为沿晶脆性,且在断口处存在Al、Si等的氧化夹杂物;当形变量和温度一定的情况下,试样随应变速率增大,变形抗力大幅提高。In this paper,Gleeble3800 thermal simulation test machine was used to conduct high temperature tensile and high temperature compression experiments on high magnetic induction oriented silicon steel billets.The influence of temperature on high temperature mechanical properties(tensile strength and section shrinkage)of high magnetic induction oriented silicon steel,and the hot working properties of high magnetic induction oriented silicon steel were studied.The results showed that the temperature of the first brittle zone of high magnetic orientation silicon steel was around the melting point~1200℃,and the temperature of the third brittle zone was about 750℃,and there was no second brittle zone.The fracture mechanism of the sample at 750℃is intergranular brittle fracture,and there are Al,Si and other oxidation inclusions at the fracture surface.When the shape variable and temperature are constant,the deformation resistance of the specimen increases with the increase of strain rate.

关 键 词：高磁感取向硅钢 高温力学性能 热加工性能 脆性区 变形抗力 

分 类 号：TF76[冶金工程—钢铁冶金] TG115.5[金属学及工艺—物理冶金]