管线钢和钢管落锤撕裂试验异常断口分析与评价  

Analysis and Assessment on DWTT Abnormal Fracture of Pipeline Steels and Pipes

作　　者：冯耀荣 陈宏达 FENG Yaorong CHEN Hongda(State Key Laboratory for Performance and Structure Safety of Petroleum Tubular Goods and Equipment Materials, CNPC Tubular Goods Research Intitute, Xi＇an, Shaanxi 710077, China)

机构地区：[1]石油管材及装备材料服役行为与结构安全国家重点实验室中国石油集团石油管工程技术研究院,陕西西安710077

出　　处：《石油管材与仪器》2016年第5期18-20,24,共4页Petroleum Tubular Goods & Instruments

摘　　要：针对管线钢和钢管落锤撕裂试验(DWTT)出现的异常断口进行了分析研究,提出了DWTT断口和异常断口的分类方法,形成异常断口评判方法,部分成果被纳入国家和行业标准,应用于高钢级管线钢和钢管异常断口的分析评价。This paper introduced the latest research results on analysis and assessment for Drop Weight Tear Test（ DWTT） abnormal fracture of pipeline steels and pipes. It is proposed that classification and assessment methods of DWTT fracture surface including abnormal fracture. The research results has been adopted in related national and industry standards,and used for the analysis and assessment of DWTT abnormal fracture of high strength pipeline steels and pipes.

关 键 词：管线钢 管线钢管 落锤撕裂试验 异常断口 脆性断裂控制 

分 类 号：TG142[一般工业技术—材料科学与工程]