退火温度对20Mn23AlV无磁结构钢的影响  

Effect of annealing temperatures on non-magnetic structural steel 20Mn23AlV

作　　者：狄彦军 平玲玲 唐兴昌 张志坚[3] 程刚虎 DI Yanjun;PING Lingling;TANG Xingchang;ZHANG Zhijian;CHENG Ganghu(Iron and Steel Research Institute of Gansu JISCO Hongxing Iron and Steel Co.,Ltd.,Jiayuguan 735100,Gansu,China;School of Materials Science and Engineering,Lanzhou University of Technology,Lanzhou 730050,Gansu,China;State Key Laboratory of Advanced Processing and Reuse of Non-Ferrous Metals,Lanzhou University of Technology,Lanzhou 730050,Gansu,China)

机构地区：[1]甘肃酒钢集团宏兴钢铁股份有限公司钢铁研究院,甘肃嘉峪关735100 [2]兰州理工大学材料科学与工程学院,甘肃兰州730050 [3]兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室,甘肃兰州730050

出　　处：《钢铁研究学报》2025年第3期375-385,共11页Journal of Iron and Steel Research

基　　金：国家自然科学基金资助项目(52061022);嘉峪关市科技重大专项计划资助项目(24-01);甘肃省科技专员专项资助项目(23CXGA0013)。

摘　　要：通过对无磁结构钢热轧板进行不同温度退火处理来研究不同温度下微观组织、力学性能和磁性能的变化。研究结果表明,随着退火温度增加,无磁结构钢热轧板的抗拉强度呈现下降趋势,伸长率缓慢上升。不同状态的无磁结构钢经过拉伸后奥氏体晶粒内部会产生大量的形变孪晶,这些形变孪晶能够阻碍位错运动和晶面滑移,增加了无磁结构钢的硬度。XRD分析结果显示无磁结构钢热轧板经过不同温度退火后并没有发生相转变。同时磁导率测试结果显示,相对磁导率在1.00218和1.00206之间浮动,符合无磁结构钢对磁性能要求。Different temperature annealing treatments of non-magnetic structural steel hot-rolled sheets were used to study the changes in microstructure,mechanical properties and magnetic properties.The results show that with the increase in annealing temperature,the tensile strength of non-magnetic structural steel hot rolled plate shows a decreasing trend,and the elongation increases slowly.A large number of deformation twins are generated within the austenitic grains of non-magnetic structural steel in different states after stretching,and these deformation twins can obstruct the dislocation motion and crystalline slip,which increases the hardness of non-magnetic structural steel.The XRD analysis shows that the hot rolled non-magnetic structural steel sheets did not induce phase transformation after annealing at different temperatures.Meanwhile,the magnetic permeability test results show that the relative magnetic permeability fluctuates between 1.00218 and 1.00206,which meets the requirements of non-magnetic structural steel for magnetic properties.

关 键 词：20Mn23AlV无磁结构钢 退火 晶粒尺寸 相对磁导率 力学性能 

分 类 号：TG142.1[一般工业技术—材料科学与工程] TG156.2[金属学及工艺—金属材料]