[1]张 磊,符利兵,等.X80级1 219 mm×18.4 mm螺旋缝埋弧焊管焊缝组织与性能[J].焊管,2015,38(7):17-20.[doi:1001-3938(2015)07-0017-04]
 ZHANG Lei,FU Libing,TIAN Lei,et al.Microstructure and Mechanical Properties of X80 1 219 mm×18.4 mm Spiral Submerged Arc Welded(SAW) Pipe Weld[J].,2015,38(7):17-20.[doi:1001-3938(2015)07-0017-04]
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X80级1 219 mm×18.4 mm螺旋缝埋弧焊管焊缝组织与性能
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
38
期数:
2015年第7期
页码:
17-20
栏目:
应用与开发
出版日期:
2015-07-28

文章信息/Info

Title:
Microstructure and Mechanical Properties of X80 1 219 mm×18.4 mm Spiral Submerged Arc Welded(SAW) Pipe Weld
文章编号:
1001-3938(2015)07-0017-04
作者:
张 磊1符利兵2 3田 磊2 3宋红兵2 3
1. 北京隆盛泰科石油管科技有限公司, 北京 100101;
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 Lei1 FU Libing2 3 TIAN Lei2 3 SONG Hongbing2
1. Beijing Long Shine Oil Tubular Technology, Co., Ltd., Beijing 100101, China;
2. National Engineering Technology 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,Shaanxi, China
关键词:
焊管韧脆转变针状铁素体显微硬度螺旋缝埋弧焊管
Keywords:
welded pipe ductile brittle transition acicular ferrite microhardness spiral submerged arc welded(SAW) pipe
分类号:
TE973.1
DOI:
1001-3938(2015)07-0017-04
文献标志码:
B
摘要:
利用夏比冲击、显微硬度和金相试验研究了X80级1 219 mm×18.4 mm螺旋缝埋弧焊管焊缝韧脆转变特性、显微硬度分布及微观组织特征。研究结果表明,温度变化对焊缝韧性有显著影响,焊缝存在韧脆转变现象,韧脆转变温度为-40 ℃;HAZ在试验温度范围内无韧脆转变现象出现,冲击韧性优良。显微硬度峰值出现在焊缝中心附近。外焊缝区为针状铁素体+少量准多边形铁素体组织;内焊缝区为多边形铁素体+少量针状铁素体组织,晶粒尺寸较外焊缝区粗大;而HAZ为粗大且均匀性差的粒状贝氏体组织,且晶界清晰可见。
Abstract:
The property of ductile brittle transition, microhardness distribution and microstructure characteristics of X80
1 219 mm×18.4 mm SAW pipe weld were investigated by V-notch charpy impact toughness test, microhardness test and metallographic test. The results indicated that the temperature change notably affect toughness of weld. The ductile brittle transition phenomenon exists in weld, and the transition temperature is -40 ℃. The HAZ samples in the experimental temperature range without the phenomenon of ductile brittle transition appear, and the impact toughness very good. The microhardness peak appears nearby weld center region. The microstructure of outside weld area consists of acicular ferrite (AF) + a small amount of quasi-polygonal ferrite(QPF), the microstructure of inside weld area consists of QPF+ a small amount AF, and the grain size of inside weld area is larger than that of outside weld area, while the microstructure of HAZ is mainly composed of coarse granular bainite, and grain boundary can be clearly seen.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2015-01-22
作者简介: 张 磊(1984—), 男, 陕西宝鸡人, 助理工程师, 主要从事石油管工程技术服务工作。
更新日期/Last Update: