1Cr18Ni9Ti不锈钢氮气瓶支架断裂原因分析  

Analysis of the Reasons for the Fracture of the Nitrogen Cylinder Bracket Made of 1Cr18Ni9Ti Stainless Steel

作　　者：王珏[1] 刘松良 宋体杰 于妍妍 卢增威 赵政鑫 李辉[3] 刘恩泽[3] WANG Jue;LIU Song-liang;SONG Ti-jie;YU Yan-yan;LU Zeng-wei;ZHAO Zheng-xin;LI Hui;LIU En-ze(AVIC Shenyang Aircraft Corporation,Shenyang 110850,China;The First Military Representative Office of Sea Navy Shenyang Bureau Stationed,Shenyang 110850,China;Institute of Metal Research,CAS,Shenyang 110016,China)

机构地区：[1]沈阳飞机工业(集团)有限公司,辽宁沈阳110850 [2]海装沈阳局驻沈阳地区第一军事代表室,辽宁沈阳110850 [3]中国科学院金属研究所,辽宁沈阳110016

出　　处：《有色矿冶》2023年第3期46-47,40,共3页Non-Ferrous Mining and Metallurgy

摘　　要：利用扫描电镜和光学显微镜的等分析设备,研究1Cr18Ni9Ti不锈钢氮气瓶支架断口的组织形貌,分析了基体成分和性能。研究表明断裂原因为在支架铆接部位的局部尺寸减薄,降低了构件的承载能力,诱发裂纹最终导致疲劳断裂,并提出相应的解决措施。Scanning electron microscopy(SEM)and optical microscopy were used to study the microstructure and morphology of the fracture surface of the 1Cr18Ni9Ti stainless steel nitrogen cylinder bracket.The results showed that the fracture was caused by local thinning at the riveting joint of the bracket,which reduced the load bearing capacity of the component and induced fatigue cracking,resulting in ultimate fracture.Corresponding solutions were proposed to address the problem.The composition and properties of the matrix were also analyzed.

关 键 词：1Cr18Ni9Ti不锈钢 氮气瓶支架 疲劳分析 微观组织 

分 类 号：TG115.21[金属学及工艺—物理冶金]