6061铝合金储氢气瓶疲劳断口分析  

Fatigue fracture analysis of 6061 aluminum alloy hydrogen storage tank

作　　者：何振波 杨曼 王生朝[1] 郭奉彬 牌君君 欧玲[1] 郑云志 蹇海根[1,5] HE Zhenbo;YANG Man;WANG Shengzhao;GUO Fengbin;PAI Junjun;OU Ling;ZHENG Yunzhi;JIAN Haigen(College of Materials and Advanced Manufacturing,Hunan University of Technology,Zhuzhou 412007,China;Hangqiao New Material(Binzhou)Science Technology Co.,Ltd.,Binzhou 256600,China;Shandong Key Laboratory of Advanced Aluminum Materials and Technology,Binzhou 262207,China;Shandong Advanced Aluminum Community Management and Operation Co.,Ltd.,Binzhou 256600,China;OKE CNC Precision Tool Co.,Ltd.,Zhuzhou 412500,China)

机构地区：[1]湖南工业大学材料与先进制造学院,湖南株洲412007 [2]航桥新材料科技(滨州)有限公司,山东滨州256600 [3]山东省先进铝基材料与技术重点实验室,山东滨州262207 [4]山东省高端铝共同体管理运营有限公司,山东滨州256600 [5]欧科亿数控精密刀具股份有限公司,湖南株洲412500

出　　处：《轻合金加工技术》2023年第9期54-57,共4页Light Alloy Fabrication Technology

基　　金：山东省泰山产业领军人才项目;山东省高端铝共同体高层次人才强企项目;湖南省自然科学基金(2023JJ50174/2023JJ50181);教育部产学合作协同育人项目(220506429021607);湖南工业大学大学生创新创业训练计划项目(2023176)。

摘　　要：6061铝合金储氢气瓶在批量应用前的疲劳试验中发生失效断裂。本试验通过宏微观形貌观察,对该疲劳失效断口进行深入分析,并提出了具体的改进措施。结果表明,裂纹萌生于气瓶的自由表面或粗晶相位置,且加工过程中的压入物加速了试件的断裂过程。在旋压工序增加清洁生产措施,做好表面检查与防护措施,提高了6061铝合金的使用寿命。The hydrogen storage tank made of 6061 aluminum alloy fractured in a fatigue test conducted prior to batch application.The fatigue failure fracture was analyzed in depth by means of macro and micro morphology observation,and specific improvement measures were put forward.The results show that the crack initiates at the free surface or coarse grain location of the tank,and the indentation in the process accelerates the fracture process of the specimen.The service life of 6061 Al alloy can be improved by adding clean production measures in the spinning process and conducting surface inspection and protective measures carefully.

关 键 词：6061铝合金 储氢气瓶 疲劳断裂 微观形貌 

分 类 号：TG166.3[金属学及工艺—热处理]