[1]张侠洲,司愿春,王凤会.20/IN625复合管焊缝扩散层组织及元素分析[J].焊管,2017,40(3):5-9.[doi:10.19291/j.cnki.1001-3938.2017.03.002]
　ZHANG Xiazhou,SI Yuanchun,WANG Fenghui.Analysis on Weld Diffusion Layer Microstructure and?Elements of 20/IN625 Clad Pipe[J].,2017,40(3):5-9.[doi:10.19291/j.cnki.1001-3938.2017.03.002]
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20/IN625复合管焊缝扩散层组织及元素分析
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
40
期数:
2017年第3期
页码:
5-9
栏目:
试验与研究
出版日期:
2017-03-28

文章信息/Info

Title:
Analysis on Weld Diffusion Layer Microstructure and
?Elements of 20/IN625 Clad Pipe
文章编号:
10.19291/j.cnki.1001-3938.2017.03.002
作者:
张侠洲1; 司愿春2; 王凤会1
1. 首钢技术研究院， 北京 100043；
2. 新疆吐哈油田建设有限责任公司， 新疆 鄯善? 838202
Author(s):
ZHANG Xiazhou1; SI Yuanchun2; WANG Fenghui1
1. Shougang Research Institute of Technology, Beijing 100043, China;
2. Xinjiang Tuha Oilfield Construction Co., Ltd., Shanshan 838202, Xinjiang, China
关键词:
20/IN625双金属复合管; 焊缝扩散层; 显微组织; 元素扩散; 硬度
Keywords:
20/IN625 double metal composite pipe;  weld diffusion layer;  microstructure;  element migration;  hardness
分类号:
TE973.3
DOI:
10.19291/j.cnki.1001-3938.2017.03.002
文献标志码:
B
摘要:
为了研究双金属复合板焊接接头组织、元素扩散情况及其对力学性能的影响，采用两种焊接方案对20/IN625双金属复合管进行了焊接试验。采用光学显微镜和扫描电子显微镜对焊缝扩散层显微组织及合金元素分布进行了分析，并且采用显微硬度计测定了扩散层附近的硬度分布。研究结果表明，基层焊缝组织主要为针状铁素体，不锈钢层和过渡层焊缝组织为奥氏体和少量铁素体。增加过渡层焊道可以减少不锈钢焊道Cr、Ni、Mo合金元素的稀释量，使扩散层界面变模糊，并降低扩散层处的硬度。两种焊接方案中焊缝扩散层处的硬度均高于其两侧焊缝硬度。
Abstract:
In order to study the double metal composite plate welded joint organization, the elements diffusion situation and its influence on mechanical properties, 20/IN625 clad pipe were welded through two kinds of schemes. By optical microscope and scanning electron microscope(SEM) to analyze weld diffusion layer microstructure and distribution of alloy elements, and the hardness distribution near the diffusion layer meter was measured through microhardness tester. The results indicated the base layer weld microstructure mainly consisted of acicular ferrite, the weld microstructure of stainless steel layer and transition layer were austenite and a small amount of ferrite. Increasing the weld pass of transition layer can decrease the dilution quantity of Cr, Ni, Mo alloy elements of stainless steel weld pass, the interface of diffusion layer became foggy, and the hardness near the diffusion layer was reduced. The hardness of the diffusion layer was higher than the hardness near the diffusion layer in the two kinds of schemes.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期： 2016-11-03
作者简介： 张侠洲（1991—），男，硕士，现在首钢技术研究院主要从事金属焊接性研究、焊接材料开发以及金属腐蚀防护工作。
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