热轧变形对高铝316L不锈钢微观组织与性能的影响  

Effect of hot rolling deformation on microstructure and properties of high aluminum 316L stainless steel

作　　者：张立生 王小巩 Zhang Lisheng;Wang Xiaogong(Qinggong College,North China University of Science and Technology,Tangshan Hebei 063000,China;Key Laboratory of Modern Metallurgical Technology of the Ministry of Education,North China University of Science and Technology,Tangshan Hebei 063210,China)

机构地区：[1]华北理工大学轻工学院,河北唐山063000 [2]华北理工大学教育部现代冶金技术重点实验室,河北唐山063210

出　　处：《金属热处理》2024年第3期33-36,共4页Heat Treatment of Metals

基　　金：河北省自然科学基金(E2021209041)。

摘　　要：对高铝316L不锈钢进行了不同变形量的热轧变形,采用SEM、TEM表征与拉伸、疲劳试验方法研究了不同变形量热轧对高铝316L钢微观组织、拉伸性能和疲劳性能的影响。结果表明,热轧态高铝316L不锈钢为奥氏体和铁素体两相组织,热轧变形可以提高高铝316L钢的强度和疲劳寿命。随着轧制变形量的增加,高铝316L不锈钢组织中的铁素体体积分数和位错密度逐渐增加,抗拉强度和疲劳寿命明显提高,伸长率有所下降。热轧变形75%的高铝316L不锈钢的抗拉强度和疲劳寿命均达到最大值,分别为937.6 MPa和3.8×10^(7)次,伸长率达到最小值42.7%。Hot rolling with different deformations for high aluminum 316L stainless steel was carried out,and the effects of which on microstructure,tensile properties and fatigue properties of the 316L steel were studied using SEM and TEM characterization,as well as tensile and fatigue testing methods.The results show that the hot rolled high aluminum 316L stainless steel has austenitic and ferritic microstructure,while the strength and fatigue life of the tested steel can be improved by hot rolling deformation.With the increase of rolling deformation,the ferrite volume fraction and dislocation density in the tested steel microstructure increase gradually,the tensile strength and fatigue life increase obviously,while the elongation decreases.The tensile strength and fatigue life of the tested steel with 75%hot rolling deformation reach their maximum values,which are 937.6 MPa and 3.8×10~7 times,respectively,while the elongation reachs the minimum value of 42.7%.

关 键 词：高铝316L不锈钢 热轧 微观组织 拉伸性能 疲劳性能 

分 类 号：TG335.3[金属学及工艺—金属压力加工]