管线钢落锤撕裂试验异常脆性断口分析  

Analysis on Abnormal Brittle Fracture of DWTT for Pipeline Steel

作　　者：王树人[1] 崔志新[2] 

机构地区：[1]中国石油天然气管道局钢管厂,辽宁辽阳111000 [2]鞍钢弓矿公司球团一厂,辽宁辽阳111007

出　　处：《焊管》2007年第6期69-71,共3页Welded Pipe and Tube

摘　　要：通过对高强度、高韧性的厚壁管线钢落锤撕裂试验中出现的异常脆性断口进行分析,阐述了其形成原因,提出了高钢级、厚壁管线钢落锤撕裂试验异常脆性断口的评定方法。Though the analysis on abnormal brittle fracture occurred in DWTT of large wall-thickness pipeline steel with high strength and toughness,the reason to cause the abnormal brittle fracture is describe and the method to assess abnormal brittle fracture occurred in DWTT of high grades and large wall-thickness pipeline steel is put forward.

关 键 词：管线钢 DWTT 异常断口 脆性 

分 类 号：TG115.57[金属学及工艺—物理冶金]