[1]张 超,等.X70海洋管阻力曲线的测定研究[J].焊管,2017,40(3):19-23.[doi:10.19291/j.cnki.1001-3938.2017.03.005]
 ZHANG Chao,ZHU Shaohua,et al.Detection Research of X70 Marine Pipe Resistance Curve[J].,2017,40(3):19-23.[doi:10.19291/j.cnki.1001-3938.2017.03.005]
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X70海洋管阻力曲线的测定研究
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
40
期数:
2017年第3期
页码:
19-23
栏目:
应用与开发
出版日期:
2017-03-28

文章信息/Info

Title:
Detection Research of X70 Marine Pipe Resistance Curve
文章编号:
10.19291/j.cnki.1001-3938.2017.03.005
作者:
张 超1 2祝少华1 2牛爱军1 2李 超1 2周 云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 钢管研究院, 陕西 宝鸡 721008
Author(s):
ZHANG Chao1 2ZHU Shaohua 1 2NIU Aijun1 2LI Chao1 2ZHOU Yun1 2
1. Chinese National Engineering Technology Research Center for Petroleum and Natural Gas Tubular Goods, Baoji 721008, Shaanxi, China;
2. Steel Pipe Research Institute of Baoji Petroleum Steel Pipe Co., Ltd., Baoji 721008, Shaanxi, China
关键词:
焊接接头CTOD断裂韧性启裂韧度阻力曲线
Keywords:
welded joint CTOD fracture toughness start crack toughness resistance curve
分类号:
TE973.1
DOI:
10.19291/j.cnki.1001-3938.2017.03.005
文献标志码:
B
摘要:
为了测定X70海洋管的阻力曲线,并以此来描述材料的断裂行为,采用多试样法对X70海洋管焊接接头进行低温CTOD试验,分别在0 ℃测试焊缝、热影响区和母材的断裂韧性并拟合阻力曲线,得到启裂韧度δ0.2。通过类比法,确定最小允许值为0.2 mm较为妥当。X70海洋管焊接接头启裂韧度δ0.2均值大于0.2 mm,显示韧性良好。结果表明,其具有良好的抗开裂性能,可免除焊后热处理,节约成本,试验结果为有效评价X70级直缝埋弧焊海洋管焊接接头提供了可靠依据。
Abstract:
In order to detect the resistance curve of X70 marine pipe, so as to describe the fracture behavior of materials. In this article, it used multi-sample method to conduct low temperature CTOD test for X70 marine pipe welded joints. The fracture toughness of weld, HAZ and base metal was tested respectively at 0 ℃, resistance curve fitting, and the start crack toughness δ0.2 was obtained. Through the analogy method, it determined the minimum allowable value of 0.2 mm was more appropriate. The start crack toughness δ0.2? average value of X70 marine pipe welded joint is greater than 0.2 mm, showed good toughness. Results showed that it is with good cracking resistance, can be exempted from heat treatment after welding, cost savings. The test results provided a reliable basis for effective evaluation X70 longitudinal submerged arc marine pipe welded joint.

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备注/Memo

备注/Memo:
收稿日期: 2016-10-21
基金项目:国家高技术研究发展计划(863计划)“深海高压油气输运高强厚壁管材关键技术研究”(项目号2013AA09A219)。
作者简介: 张?? 超(1986—),男,助理工程师,主要从事力学方面的检验分析工作。
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