[1]孙 宏,宗秋丽,郑青昊,等.预应变对高韧性管线钢DWTT异常断口的影响[J].焊管,2021,44(2):47-52.[doi:10.19291/j.cnki.1001-3938.2021.02.010]
　Translated by SUN Hong,ZONG Qiuli,ZHENG Qinghao,et al.Effect of Pre-strain on Abnormal Fracture Occurrence in Drop Weight Tear Test for Linepipe Steel with High Toughness[J].,2021,44(2):47-52.[doi:10.19291/j.cnki.1001-3938.2021.02.010]
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预应变对高韧性管线钢DWTT异常断口的影响()
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
第44卷
期数:
2021年第2期
页码:
47-52
栏目:
国外焊管
出版日期:
2021-02-28

文章信息/Info

Title:
Effect of Pre-strain on Abnormal Fracture Occurrence in Drop Weight Tear Test for Linepipe Steel with High Toughness
文章编号:
10.19291/j.cnki.1001-3938.2021.02.010
作者:
孙 宏; 宗秋丽; 郑青昊; 闵祥玲; 王 瑾 ?译
1. 渤海石油装备华油钢管公司，河北 青县 062658；
2. 渤海石油装备研究院，河北 青县 062658；
3. 中国石油技术开发有限公司，北京100028
Author(s):
Translated by SUN Hong;  ZONG Qiuli;  ZHENG Qinghao;  MIN Xiangling;  WANG Jin
1. North China Petroleum Steel Pipe Company of Bohai Equipment Manufacturing Co., Ltd., Qingxian 062658, Hebei, China;
2. Research Institute of Bohai Equipment Manufacturing Co., Ltd., Qingxian 062658, Hebei, China;
3. China Petroleum Technology and Development Corporation, Beijing 100028, China
关键词:
落锤撕裂试验; 脆性断裂; 异常断口形貌; 预应变; 非全尺寸气体爆破试验
Keywords:
drop weight tear test;  brittle fracture;  abnormal fracture appearance;  pre-strain;  partial gas burst test
分类号:
TG113.25
DOI:
10.19291/j.cnki.1001-3938.2021.02.010
文献标志码:
A
摘要:
落锤撕裂试验（DWTT）被广泛用作评估管线钢抗脆性断裂性能的试验方法，但近年来高韧性管线钢在DWTT期间经常发生异常断裂。为了研究预应变对管线钢韧性的影响，分析了预应变对高韧性管线钢DWTT异常断口产生的影响。结果表明，超过2％的压缩预应变使夏比上平台能量降低了7％~10％，锤击侧附近异常断裂的发生可归因于压缩预应变；异常断裂的出现与缺口类型无关；钢管爆破试验的断口形貌与预制裂纹缺口DWTT试样相似。
Abstract:
Drop weight tear test (DWTT) is widely used to evaluate the brittle fracture resistance of pipeline steel, but in recent years, abnormal fracture often occurs in high toughness pipeline steel during DWTT. In order to study the effect of pre-strain on toughness, the effect of pre-strain on DWTT abnormal fracture of high toughness pipeline steel is analyzed. The results show that more than 2% compressive pre-strain reduces the Charpy upper shelf energy by 7% to 10%. The abnormal fracture near the hammer impact side can be attributed to compressive pre-strain. The appearance of abnormal fracture is independent of notch type. The fracture morphology of steel tube in burst test is similar to that of DWTT specimen with prefabricated crack notch.

参考文献/References:

译自：TOSHIHIKO A, TAISHI F, YASUHIRO S, et al. Evaluation of pre-strain effect on abnormal fracture occurrence in drop-weight tear test for linepipe steel with high Charpy energy[J]. Procedia Structural Integrity，2016（2）：422-429.

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备注/Memo

备注/Memo:
收稿日期：2020-08-18
译者简介：孙 宏（1974—），男，高级工程师，工程硕士，从事石油输送钢管材料与试验研究工作。
更新日期/Last Update: 2021-04-08