[1]董俊明,毛秋英,毕宗岳,等.X100及X80焊管焊缝韧性降低原因分析[J].焊管,2014,37(11):5-10.[doi:1001-3938(2014)11-0005-06]
 DONG Junming,MAO Qiuying,BI Zongyue,et al.Cause Analysis on Weld Toughness Decrease of X100 and X80 Welded Pipe[J].,2014,37(11):5-10.[doi:1001-3938(2014)11-0005-06]
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X100及X80焊管焊缝韧性降低原因分析()
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
37
期数:
2014年第11期
页码:
5-10
栏目:
试验与研究
出版日期:
2014-11-28

文章信息/Info

Title:
Cause Analysis on Weld Toughness Decrease of X100 and X80 Welded Pipe
文章编号:
1001-3938(2014)11-0005-06
作者:
董俊明1毛秋英1毕宗岳2黄晓辉2
(1. 西安交通大学 材料科学与工程学院,西安 710049;
2. 宝鸡石油钢管有限责任公司,陕西 宝鸡 721008)
Author(s):
DONG Junming1MAO Qiuying1BI Zongyue2HUANG Xiaohui2
(1. School of Materials Science and Engineering,Xi’an Jiaotong University,Xi’an 710049,China;
2. Baoji Petroleum Steel Pipe Co.,Ltd.,Baoji 721008,Shaanxi,China)
关键词:
焊管显微组织韧性降低夹杂物M/A组元
Keywords:
welded pipemicrostructuretoughness decreaseinclusionsM/A constituents
分类号:
TE973
DOI:
1001-3938(2014)11-0005-06
文献标志码:
A
摘要:
研究了X100和X80焊管焊缝的显微组织和冲击韧性,详细分析了焊缝韧性降低的原因。通过组织分析,得出显微组织不均匀即M/A组元和夹杂物聚集是降低焊缝韧性的重要因素。通过氧、氮、氢含量的测定和夹杂物分析,可知焊缝含氧量高导致焊缝中含有较多大尺寸非金属夹杂物,从而显著降低焊缝韧性。脆性M/A组元是导致焊缝韧性降低的另一个重要因素。控制焊缝韧性降低的主要措施为控制焊缝含氧量和脆性M/A组元含量。
Abstract:
In this paper,the weld microstructure and impact toughness of X100 and X80 welded pipe were studied, and the cause of weld toughness decrease was detailedly analyzed. Through structure analysis, it got that nonuniform microstructure, that is to say M/A constituents and inclusions aggregation are the key factors to lower weld toughness. Through the determination of the content of oxygen, nitrogen, hydrogen, and inclusion analysis, it showed high oxygen content lead to more big size of non-metallic inclusions in weld, thus significantly reduce the weld toughness. The brittle M/A constituents are the other important factor. Control the oxygen contents of weld and the content of brittle M/A constituents are the main measures for controlling weld toughness reduce.

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备注/Memo

备注/Memo:
收稿日期:2014-06-19
作者简介:董俊明(1958—),男,毕业于西安交通大学焊接专业,工学博士,副教授,长期从事焊接冶金及焊接结构应力腐蚀的教学及研究工作。
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