[1]张建勋,孙茜,毕宗岳,等.X100螺旋埋弧焊管焊接HAZ微区性能研究[J].焊管,2012,35(12):5-10.[doi:1001-3938(2012)12-0005-06]
 ZHANG Jianxun,SUN Qian,BI Zongyue,et al.Micro Performance in The HAZ of Welded Joint of X100 SSAW Pipe[J].,2012,35(12):5-10.[doi:1001-3938(2012)12-0005-06]
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X100螺旋埋弧焊管焊接HAZ微区性能研究()
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
35
期数:
2012年第12期
页码:
5-10
栏目:
试验与研究
出版日期:
2012-12-28

文章信息/Info

Title:
Micro Performance in The HAZ of Welded Joint of X100 SSAW Pipe
文章编号:
1001-3938(2012)12-0005-06
作者:
张建勋孙茜毕宗岳牛辉
(1.西安交通大学 材料科学与工程学院,西安 710049;
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 Jianxun1 SUN Qian1 BI Zongyue23 NIU Hui23
(1. School of Materials Science and Engineering, Xian Jiaotong University, Xi′an 710049,China;
2. National Petroleum and Gas Tubular Goods Engineering Technology Research Center, Baoji 721008, Shaanxi,China;
3. Baoji Petroleum Steel Pipe Co.,Ltd., Baoji 721008, Shaanxi, China)
关键词:
关键词:X100管线钢螺旋埋弧焊管微区组织
Keywords:
Key words: X100 pipeline steel SAWH pipe microstructure performance
分类号:
TG113.26
DOI:
1001-3938(2012)12-0005-06
文献标志码:
A
摘要:
针对X100螺旋埋弧焊管焊接热影响区(HAZ)的硬化与软化现象,研究了微区组织形态及M-A岛分布对HAZ显微硬度和微冲剪强度的影响规律。研究结果表明,显微硬度在HAZ的粗晶区出现局部升高,而在细晶及混晶区位置出现局部降低现象,显微硬度与微冲剪强度有一定的对应关系,即硬度值偏高的区域剪切强度也偏高;焊接HAZ的粗晶区为粗大粒状贝氏体,而细晶区为准多边形铁素体与多边形铁素体,混晶区组织为粒状贝氏体与铁素体的混合,母材为细小粒状贝氏体。组织中M-A岛含量分布规律为粗晶区—细晶区—混晶区依次减少。影响HAZ微区性能的主因是显微组织形态及其含量,HAZ微区组织中的铁素体使得HAZ软化,而M-A岛使得HAZ硬化,而且含量越多,影响越大。
Abstract:
In this paper, aimed at the softing and hardening in welding HAZ of X100 SAWH Pipe, the influence regulars of the microstructure and M-A island distribution on HAZ microhardness and micro impact shearing strength were investigated. The results showed that microhardness increases locally in the coarsed grain heat affected zone(CGHAZ),and slightly reduces in the fined grain heat affected zone(FGHAZ) and incomplete heat affected zone(ICHAZ). Simultaneously, there is corresponding relationship between microhardness and micro impact shearing strength, meaning the micro impact shearing strengh is high if the microhardness is high in the same region. The microstrucure of CGHAZ is granular bainite(GB), the quasi-polygon ferrite and polygon ferrite in the FGHAZ, the GB and ferrite in the ICHAZ, and the tiny GB in base metal. The content of the M-A island microstructure gradually decreases from the CGHAZ, FGHAZ, ICHAZ, to the base metal. The microstructure and its content are the main influecne factors to HAZ performance, the ferrite in microstructure can soften HAZ and the M-A island microstructure harden HAZ , and the influence is larger with the content of the ferrite and M-A island increasing.

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备注/Memo

备注/Memo:
作者简介:张建勋(1958—),男,西安交通大学教授、博导,主要从事材料焊接与连接、材料结构强度与可靠性研究。
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