[1]唐家睿,等.单试样卸载柔度法测定X70管线环焊缝断裂韧性阻力曲线[J].焊管,2018,41(1):21-27.[doi:DOI: 10.19291/j.cnki.1001-3938.2018.01.005]
　TANG Jiarui,CHEN Hongyuan,et al.Determination of Fracture Resistance Curve of X70 Pipeline Girth Weld bySingle Sample Unload Compliance Method[J].,2018,41(1):21-27.[doi:DOI: 10.19291/j.cnki.1001-3938.2018.01.005]
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单试样卸载柔度法测定X70管线环焊缝
断裂韧性阻力曲线()
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
41
期数:
2018年第1期
页码:
21-27
栏目:
试验与研究
出版日期:
2018-01-28

文章信息/Info

Title:
Determination of Fracture Resistance Curve of X70 Pipeline Girth Weld by
Single Sample Unload Compliance Method
文章编号:
DOI: 10.19291/j.cnki.1001-3938.2018.01.005
作者:
唐家睿1;  2; 陈宏远3; 吉玲康3; 田小江1;  2; 刘玉栋1;  2
1. 国家石油天然气管材工程技术研究中心， 陕西 宝鸡 721008；
2. 宝鸡石油钢管有限责任公司， 陕西 宝鸡721008；
3. 中国石油集团石油管工程技术研究院， 西安710077
Author(s):
TANG Jiarui 1;  2;  CHEN Hongyuan 3;  JI Lingkang 3;  TIAN Xiaojiang 1;  2;  LIU Yudong 1;  2
1. Chinese National Engineering Technology Research Center for Petroleum and Natural Gas Tubular Goods, Baoji 721008, Shaanxi, China；
2. Baoji Petroleum Steel Pipe Co., Ltd., Baoji 721008, Shaanxi, China；
3. Tubular Goods research institute of CNPC, Xi，an 710077, China
关键词:
环焊缝; 单试样卸载柔度法; 单边缺口拉伸试验; 断裂阻力曲线
Keywords:
girth weld; single sample unloading flexibility method; single edge notch tensile test; fracture resistance curve
分类号:
TG113.25
DOI:
DOI: 10.19291/j.cnki.1001-3938.2018.01.005
文献标志码:
A
摘要:
为了预防X70管线环焊缝受塑性变形时的失效，采用单试样卸载柔度法对基于应变设计的X70管线环焊缝的焊缝金属及热影响区进行单边缺口拉伸试验，获得了裂纹延性扩展过程的断裂韧性阻力曲线，并对热影响区试样的试验结果进行了有效性验证。结果表明，焊缝金属和热影响区试样的断裂阻力曲线分别为δ=1.348 55（Δa）0.643 34和δ=1.600 42（Δa）0.709 99，热影响区试样的断裂始距焊缝熔合线0.5 mm以内，试验结果为管线基于应变设计和工程临界评价提供了依据。
Abstract:
In order to prevent the failure of X70 pipeline girth weld in plastic deformation, the single sample unloading flexibility method was taken for single edge tensile test of girth weld and heat affected zone for strain-based design of X70 pipeline, the resistance curve of crack ductile extension was obtained, and the test results of heat affected zone specimens were validated. The results showed that fracture resistance curve of girth weld and heat affected zone specimens were that δ was 1.348 55（Δa）0.643 34 and 1.600 42（Δa）0.709 99， fracture beginning of heat affected zone specimens were from the weld fusion line within 0.5 mm, and the test results could provide evidence for the strain-based design pipeline and engineering critical assessment.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期： 2017－10－13
作者简介： 唐家睿（1991—）， 男， 硕士， 主要从事石油管材工程试验与检测评价工作。
更新日期/Last Update: 2018-02-23