固溶温度和晶粒尺寸对S31608不锈钢挤压管超低温冲击功的影响  

Effect of Solution Temperature and Grain Size on Ultra Low Temperature Impact Energy of S31608 Stainless Steel Extruded Pipe

作　　者：王哨兵 孙文强 王曼 周珠 杜雷 陆乾乾 Wang Shaobing;Sun Wenqiang;Wang Man;Zhou Zhu;Du Lei;Lu Qianqian(Zhejiang Jiuli Hi-Tech Metals Co.,Ltd.,Huzhou 313000)

机构地区：[1]浙江久立特材科技股份有限公司,湖州313000

出　　处：《特殊钢》2023年第1期89-92,共4页Special Steel

摘　　要：对1060~1020℃固溶、晶粒尺寸50.2~17.6μm的S31608不锈钢(/%:0.065C,16.50Cr, 11.80Ni, 2.2Mo)Φ168 mm×13 mm挤压无缝管进行了20℃和-40~-269℃超低温冲击试验。并用扫描电子显微镜进行冲击断口分析。结果表明,S31608钢在-296~20℃具有较高冲击功,即290~360 J,且晶粒尺寸只对-80℃和-120℃冲击功明显的影响,25.3~50.2μm晶粒钢(1060~1040℃固溶处理)的-80℃和-120℃冲击功为330~360 J,17.6μm晶粒钢(1020℃固溶处理)的-80℃和-120℃冲击功为320~360 J。The ultra low temperature impact tests for S31608 stainless steel(/%:0.065 C,16.50 Cr, 11.80 Ni, 2.2 Mo) Φ168 mm×13 mm extruded seamless pipe(solid-solution-treated at 1060-1020 ℃ with grain size 50.2-17.6 μm) at 20 ℃ and-40--269 ℃ are carried out, and the impact fracture is analyzed by scanning electron microscope. The results show that the S31608 steel has high impact energy i.e. 290-360 J at-269-20 ℃, and only the grain size of steel has obvious effect on impact energy at-80 ℃ and-120 ℃, the impact energy of steel with grain size 25.3-50.2 μm(solid-solution-treated at 1060-1040 ℃) at-80 ℃ and-120 ℃ is 330-360 J, but that of steel with grain size 17.6 μm(solid-solution-treated at 1020 ℃) at-80 ℃ and-120 ℃ is 320-360 J.

关 键 词：S31608 超低温 晶粒尺寸 冲击功 断口形貌 

分 类 号：TG142.71[一般工业技术—材料科学与工程] TG156.94[金属学及工艺—金属材料]