固溶温度对022Cr22Ni5Mo3N双相不锈钢组织和性能的影响  

Effect of Solution Temperature on Structure and Properties of 022Cr22Ni5Mo3N Duplex Stainless Steel

作　　者：李宁[1] Li Ning(Shenyang Kejin Special Material Co.,Ltd,Shenyang 110101)

机构地区：[1]沈阳科金特种材料有限公司,沈阳110101

出　　处：《特殊钢》2021年第5期78-80,共3页Special Steel

摘　　要：试验研究了1000℃4h和1060℃4h固溶处理后022Cr22Ni5Mo3N钢φ75mm材的组织和力学性能。结果表明,022Cr22Ni5Mo3N钢φ75 mm材终锻温度970℃空冷的组织(体积分数)约为铁素体31%,奥氏体56%,析出物13%;1000℃4h固溶后为铁素体38%,奥氏体60%,析出物2%;1060℃4h固溶后铁素体50%,奥氏体50%,该钢通过采用1060℃固溶后,拉伸断裂强度731 MPa,延伸率38%,冲击功A_(KV)(-40℃)76-81J,满足标准要求。The structure and mechanical properties of 022Cr22Ni5Mo3N steel Φ75 mm bar solution treated at 1 000℃ for 4 h and 1 060 ℃ for 4 h have been tested and studied.Results show that the structure(volume percentage) in 022Cr22Ni5Mo3N steel Φ75 mm bar end forging temperature at 970 ℃,air cooling is about ferrite 31%,austenite 56% and precipitates 13%,that solution-treated at 1 000 ℃ for 4 h is ferrite 38%,austenite 60% and precipitates 2%,and that solution-treated at 1 060 ℃ for 4 h is ferrite 50% and austenite 50%.The steel solution-treated at 1 060℃ has tensile strength 731 MPa,elongation 38% and-40℃ impact energy AKV 76~81 J to meet the requirement of standard.

关 键 词：022Cr22Ni5Mo3N钢 固溶温度 组织 铁素体 冲击韧性 

分 类 号：TG156.94[金属学及工艺—热处理] TG142.71[金属学及工艺—金属学]