[1]徐 凯,潘小燕,白永芳,等.焊缝余高及去应力退火对X80钢管焊接接头疲劳性能的影响[J].焊管,2018,41(10):1-7.[doi:10.19291/j.cnki.1001-3938.2018.10.001]
 XU Kai,PAN Xiaoyan,BAI Yongfang,et al.Effects of Weld Reinforcement and Stress Relief Annealing on Fatigue Properties of Welded Joint for X80 Steel Pipe[J].,2018,41(10):1-7.[doi:10.19291/j.cnki.1001-3938.2018.10.001]
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焊缝余高及去应力退火对X80钢管
焊接接头疲劳性能的影响
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
41
期数:
2018年第10期
页码:
1-7
栏目:
试验与研究
出版日期:
2018-10-28

文章信息/Info

Title:
Effects of Weld Reinforcement and Stress Relief Annealing on
 Fatigue Properties of Welded Joint for X80 Steel Pipe
文章编号:
10.19291/j.cnki.1001-3938.2018.10.001
作者:
徐 凯1潘小燕2白永芳1乔桂英1 3肖福仁1
1. 燕山大学材料科学与工程学院 亚稳材料制备技术与科学国家重点实验室,河北 秦皇岛 066004;
2. 河北华油一机厂图博涂层有限公司,河北 青县 062658;
3. 燕山大学环化学院,河北 秦皇岛 066004
Author(s):
XU Kai1PAN Xiaoyan2BAI Yongfang1QIAO Guiying1 3XIAO Furen1
1. State Key Laboratory of Metastable Materials Science and Technology,School of Materials Science and Engineering, Yanshan University,Qinhuangdao 066004,Hebei,China;
2. Hebei Hua You YiJi Tuboscope Coating Co., Ltd.,Qingxian 062658,Hebei,China;
3. Environment and Chemistry College,Yanshan University,Qinhuangdao,066004,Hebei,China
关键词:
管线钢管焊缝疲劳裂纹萌生寿命
Keywords:
pipeline steelweldfatiguecrack initiationlife
分类号:
TG113.255
DOI:
10.19291/j.cnki.1001-3938.2018.10.001
文献标志码:
A
摘要:
采用MTS Landmark 370型疲劳试验机研究了焊缝余高和去应力退火对X80大变形管线钢管焊接接头的拉-拉疲劳寿命的影响;采用显微硬度计和扫描电镜分析了焊接接头的硬度及疲劳断口形貌。结果表明:去除焊缝余高和去应力退火处理能够延长X80大变形管线钢管焊接接头的疲劳裂纹萌生寿命,提高其疲劳寿命;疲劳裂纹在内焊缝的焊趾处或者紧邻熔合线的热影响区萌生;焊缝余高引起的应力集中和热影响区软化是影响疲劳裂纹萌生的关键因素。
Abstract:
The effects of weld reinforcement and stress relief annealing on fatigue life of welded joints of X80 steel pipe were investigated by a MTS Landmark 370 servo-hydraulic universal testing machine. The hardness and fatigue fracture morphology of the welded joints were investigated performed on micro-hardness test and scan electronic microscope(SEM). The results show that the fatigue life and fatigue crack initiation life of the welded joints of X80 steel pipe increase after removing reinforcement and annealing. The fatigue crack initiation of the X80 welded joint specimens occurs at the inside weld toe or heat-affected zone(HAZ) near weld-fusion line. Stress concentration resulting by the weld reinforcement and HAZ softening are the key factors of affecting fatigue crack initiation.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2018-03-06
作者简介:徐  凯(1992—),男,博士研究生,目前主要从事管线钢管焊接及安全性评价工作。
更新日期/Last Update: 2018-12-03