00Cr17Mn6Ni5N的高温塑性变形行为研究  

Research on Plastic Deformation Behavior of 00Cr17Mn6Ni5N at High Temperature

作　　者：杨吉春[1] 高福彬[1,2] 任金亮 

机构地区：[1]内蒙古科技大学材料与冶金学院,内蒙古包头014010 [2]河北钢铁集团承钢公司炼钢二厂,河北承德067102

出　　处：《热加工工艺》2014年第16期102-104,111,共4页Hot Working Technology

基　　金：国家自然科学基金项目(51364031)

摘　　要：00Cr17Mn6Ni5N奥氏体不锈钢在10 kg真空感应炉内熔炼,并在氮气气氛下加氮化铬进行N合金化。通过Gleeble-1500D热模拟试验机进行高温拉伸试验。采用扫描电镜和蔡司金相显微镜,观察断口形貌及近断口处组织。研究表明,实验钢的高温塑性较好,最佳塑性区间为1050～1150℃,在1200℃附近存在高温脆性区;从1000～1250℃热模拟拉伸断口形貌分析,实验钢的断裂方式以韧性断裂为主,在1200℃脆性区的断裂为微孔或析出物为中心的韧窝断裂。00Cr17Mn6Ni5N austenitic stainless steel（0.005%C, 0.19%Si, 7.42%Mn, 0.011%P, 0.007%S, 17.07%Cr,5.19%Ni, 0.40%N） was smelted by 10 kg vacuum induction furnace with N-alloying by filling nitrogen and adding chromium nitride under nitrogen atmosphere. By using Gleeble-1500 D thermo-mechanical simulation machine, the high temperature tensile test was carried out. Using scanning electron microscope and ZEISS metallographic microscope, the fracture morphology near the fracture tissues was observed. The research shows that the test steel high temperature plasticity is good,the best plastic range is 1050℃-1150 ℃, at 1200 ℃ high temperature brittleness zone. From 1000 ℃-1250 ℃ hot simulation tensile fracture morphology analysis, the test steels＇ fracture is given priority to ductile fracture, and at 1200℃ when the fracture is microporous or precipitates at the center of fracture.

关 键 词：奥氏体不锈钢 高温塑性 高氮钢 

分 类 号：TG113.25[金属学及工艺—物理冶金]