固溶处理对高氮奥氏体不锈钢组织和力学性能的影响  

Effect of solution treatment on microstructure and mechanical properties of high nitrogen austenitic stainless steel

作　　者：王鼎 王伟 赵英利[3] 嵇爽 WANG Ding;WANG Wei;ZHAO Yingli;JI Shuang(Naval Military Representative Office in Baotou,Baotou 014000,China;Ningbo Branch of Chinese Academy of Ordnance Science,Ningbo 315103,China;Hebei Iron and Steel Technology Research Institite,Shijiazhuang 052165,China)

机构地区：[1]海军驻包头地区军事代表室,内蒙古包头014000 [2]中国兵器科学研究院宁波分院,浙江宁波315103 [3]河北钢铁研究总院,河北石家庄052165

出　　处：《兵器材料科学与工程》2019年第1期98-101,共4页Ordnance Material Science and Engineering

摘　　要：利用光学显微镜、扫描电镜等,对热轧后水冷处理和空冷的高氮奥氏体不锈钢微观组织进行观察,研究热轧后热处理对高氮不锈钢力学性能的影响。结果表明:与热轧后空冷试样相比,水冷处理试样的抗拉强度提高4%,伸长率提高78%,冷弯性能提高62%;亚晶界和高密度位错是水冷处理钢具有优异力学性能的主要原因。In order to investigate the influence of heat treatment on the mechanical property of the high nitrogen stainless steel,the microstructure of high nitrogen austenitic stainless steel under the direct quenching and air cooling was analyzed by optical microscope and SEM.The results show that the tensile strength of the direct quenching samples is increased by 4%,the elongation is increased by 78% and the cold bending performance is increased by 62% compared with the air cooling samples.The formation of the sub-grain boundary and the higher dislocation density are the main reasons of the excellent mechanical property.

关 键 词：固溶处理 高氮奥氏体不锈钢 热轧 塑性 冷弯性能 

分 类 号：TG142.25[一般工业技术—材料科学与工程]