海洋潜标释放器机械转环断裂原因  

Reasons for the fracture of the mechanical swivel of the marine submersible release device

作　　者：戴煦 昌飞 张晶晶 曾啸虎 DAI Xu;CHANG Fei;ZHANG Jingjing;ZENG Xiaohu(Centre Testing International Group Co.,Ltd.,Shenzhen 518101,China;Centre Testing International Pinbiao(Shanghai)Co.,Ltd.,Shanghai 201114,China;Centre Testing International Pinzheng(Shanghai)Co.,Ltd.,Shanghai 201114,China)

机构地区：[1]华测检测认证集团股份有限公司,深圳518101 [2]上海华测品标检测技术有限公司,上海201114 [3]上海华测品正检测技术有限公司,上海201114

出　　处：《理化检验(物理分册)》2025年第2期52-56,共5页Physical Testing and Chemical Analysis(Part A:Physical Testing)

基　　金：国家重点研发计划项目(2018YFB1403300)。

摘　　要：某海洋潜标释放器上的机械转环发生断裂事故,与机械转环连接的卸扣表面存在较大缺口。采用宏观观察、扫描电镜及能谱分析、点腐蚀测试、金相检验、化学成分分析、硬度测试等方法对机械转环断裂的原因进行分析。结果表明:卸扣件中螺栓的材料为316L不锈钢,其在海洋环境中主要发生点腐蚀,造成螺栓和转环拉环的硬度降低,产生了应力裂纹,裂纹不断扩展,最终导致机械转环断裂。The mechanical swivel on a certain marine submersible release device broke,and there was a large gap on the surface of the release buckle connected to the mechanical swivel.The causes of mechanical swivel fracture were analyzed using macroscopic observation,scanning electron microscopy and energy spectrum analysis,point corrosion testing,metallographic examination,chemical composition analysis,hardness testing.The results show that the material of the bolts in the shackle was 316L stainless steel,which mainly underwent point corrosion in marine environments,resulted in a decrease in the hardness of the bolts and swivel rings,and the generation of stress cracked.The cracks continued to propagate,ultimately led to the fracture of the mechanical swivel.

关 键 词：海洋潜标释放器 机械转环 卸扣 海水腐蚀 断裂 

分 类 号：TB31[一般工业技术—材料科学与工程] TG115.2[金属学及工艺—物理冶金]