[1]齐丽华,胡颖,张世杰,等.Mo、Ni元素对X70钢管FCAW-G环焊接头组织性能及形变影响规律研究[J].焊管,2023,46(2):1-5.[doi:10.19291/j.cnki.1001-3938.2023.02.001]
 QI Lihua,HU Ying,ZHANG Shijie,et al.Effect of Mo and Ni on Microstructure Properties and Deformation of X70 Pipe FCAW-G Girth Weld[J].,2023,46(2):1-5.[doi:10.19291/j.cnki.1001-3938.2023.02.001]
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Mo、Ni元素对X70钢管FCAW-G环焊接头组织性能及形变影响规律研究()
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
46
期数:
2023年第2期
页码:
1-5
栏目:
试验与研究
出版日期:
2023-02-28

文章信息/Info

Title:
Effect of Mo and Ni on Microstructure Properties and Deformation of X70 Pipe FCAW-G Girth Weld
文章编号:
10.19291/j.cnki.1001-3938.2023.02.001
作者:
齐丽华胡颖张世杰杨耀彬陈越峰
1. 中国石油集团工程材料研究院有限公司,西安 710077; 2. 石油管材及装备材料服役行为与结构安全国家重点实验室,西安 710077; 3. 国家管网集团工程建设本部,北京 100101; 4. 国家管网集团江苏天然气管道有限责任公司,南京 224599
Author(s):
QI Lihua HU Ying ZHANG Shijie YANG Yaobin CHEN Yuefeng
1. CNPC Tubular Goods Research Institute, Xi’an 710077, China; 2. State Key Laboratory for Performance and Structure Safety of Petroleum Tubular Goods and Equipment Materials, Xi’an 710077, China; 3. PetroChina Engineering Construction Department, Beijing 100101, China; 4. PetroChina Jiangsu Natural Gas Pipeline Company, Nanjing 224599, China
关键词:
微合金元素CTOD力学性能硬度云图DIC试验
Keywords:
micro?lloying elements CTOD mechanical properties hardness mapping DIC test
分类号:
TG142.1
DOI:
10.19291/j.cnki.1001-3938.2023.02.001
文献标志码:
A
摘要:
针对不同成分合金元素对X70管线钢管和环焊缝的组织性能影响进行对比,并运用光学显微镜、力学性能测试、硬度云图、CTOD和DIC试验等方法从组织和性能方面综合进行分析。结果显示,Mo、Ni微合金元素不仅有利于提高管体的拉伸性能,显著细化晶粒,且在较高的环焊热输入下,含Mo、Ni微合金元素热影响区的冲击性能明显提高,未发生软化现象。在拉伸形变过程中,在无Mo、Ni微合金元素一侧的软化区域发生形变、颈缩导致失效。综合结果表明,适当增加Mo、Ni微合金元素有利于提高管体和环焊热影响区的综合性能,保证高钢级管道建设的安全施工和运营。
Abstract:
The effects of different alloying elements on the microstructure and properties of X70 pipeline steel pipe body and girth weld were compared and analyzed, and the microstructure and properties were comprehensively analyzed by optical microscope, mechanical property test, hardness nephogram, CTOD and DIC test. It was found that Mo and Ni micro alloy elements are not only conducive to improve the tensile properties of the pipe body, but also significantly refining the grain size, and under higher girth welding heat input, the impact properties of the heat?ffected zone of Ni microalloy elements are significantly improved without softening. In the process of tensile deformation, deformation and necking occur in the softening zone on the side without Mo and Ni microalloy elements, leading to failure. The comprehensive results show that proper addition of Mo and Ni microalloy elements is beneficial to improve the comprehensive performance of pipe body and heat affected zone of girth welding, and ensure the safe construction and operation of high grade steel pipeline construction.

参考文献/References:

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备注/Memo

备注/Memo:
基金项目: 江苏滨海LNG配套输气管线滨海—盱眙项目“微合金元素对X70直缝埋弧焊钢管焊接工艺影响研究”(项目编号JSGD-JS-FW-2021-052);国家管网科研课题“管道施工装备及焊接材料性能提升研究专题一国产焊接材料性能提升研究”(项目编号PNPCM-GCGL-GSGG-FWJF-2022-191)。收稿日期:2022-08-31作者简介:齐丽华(1973—),女,博士,教授级高工,主要从事高钢级油气管道用钢管和环焊组织性能研究,以及高钢级管道环焊起裂和损伤机理研究。
更新日期/Last Update: 2023-02-22