[1]张骁勇,毕宗岳,高惠临,等.X80大变形管线钢的预应变脆化[J].焊管,2013,36(8):12-16.[doi:1001-3938(2013)08-0005-12]
 ZHANG Xiaoyong,BI Zongyue,GAO Huilin,et al.Prestrain Embrittlement of X80 Large Deformation Pipeline Steel[J].,2013,36(8):12-16.[doi:1001-3938(2013)08-0005-12]
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X80大变形管线钢的预应变脆化
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
36
期数:
2013年第8期
页码:
12-16
栏目:
试验与研究
出版日期:
2013-08-28

文章信息/Info

Title:
Prestrain Embrittlement of X80 Large Deformation Pipeline Steel
文章编号:
1001-3938(2013)08-0005-12
作者:
张骁勇1毕宗岳23高惠临1牛 辉23徐学利1王维亮23
(1.西安石油大学 材料科学与工程学院,西安 710065;
2.国家石油天然气管材工程技术研究中心,陕西 宝鸡 721008;
3.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 Xiaoyong1 BI Zongyue23 GAO Huilin1 NIU Hui23 XU Xueli1 WANG Weiliang23
(1. School of Material Science and Engineering , Xi’an Shiyou University, Xi’an 710065, China;
2. Chinese National Engineering Research Center for Petroleum and Natural Gas Tubular Goods, Baoji 721008, Shaanxi, China;3. Steel Pipe Research Institute of Baoji Petroleum Steel Pipe Co., Ltd., Baoji 721008,Shannxi, China)
关键词:
X80管线钢大变形预应变脆化
Keywords:
X80 pipeline steel large deformation prestrain embrittlement
分类号:
TG142.1
DOI:
1001-3938(2013)08-0005-12
文献标志码:
A
摘要:
大变形管线钢因其较低的屈强比、较高的形变强化指数和较大的均匀伸长率,成为地震、滑坡、冻土等地质灾害地区油、气输送管道的首选材料。结合我国管道工程建设的要求,采用材料显微分析方法和力学性能测试等手段,对一种贝氏体+铁素体X80大变形管线钢在预应变中的脆化规律进行了研究。结果表明,预应变使X80大变形管线钢产生脆化;随着预应变量的增大,该管线钢强度和硬度增加,塑性和韧性下降;预应变脆化形成的机理是管线钢位错亚结构的变化。
Abstract:
Large deformation pipeline steel possesses low yield ratio, high deformation reinforcement index and high uniform elongation, so it is the preferred material of steel pipe for transporting oil and gas in geological disaster area, such as earthquake, landslide, frozen earth and so on. In this article, combined with the requirements of China pipeline engineering construction, it studied embrittlement regular of a kind of bainite+ferrite X80 pipeline steel in prestrain by material microscopic analysis methods and mechanical properties test. The result showed that prestrain make X80 large deformation pipeline steel generate embrittlement.With prestrain increasing, the strength and hardness enhance, plasticity and toughness decrease. The Changes in the pipeline steel dislocation substructure cause prestrain embrittlement.

参考文献/References:

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备注/Memo

备注/Memo:
作者简介:张骁勇(1971—),男,博士,副教授,主要从事管线钢的研究和教学工作。
基金项目:国家自然科学基金项目(51174165);国家科技支撑计划项目(2011BAE35B01)。
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