[1]谢树军,杨清.A790 S31803双相不锈钢焊接接头耐腐蚀性能研究[J].焊管,2012,35(12):25-28.[doi:1001-3938(2012)12-0025-04]
 YANG Qing,XIE Shujun.Study on Corrosion Resistance of A790 S31803 Duplex Stainless Steel Welded Joint[J].,2012,35(12):25-28.[doi:1001-3938(2012)12-0025-04]
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A790 S31803双相不锈钢焊接接头耐腐蚀性能研究
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
35
期数:
2012年第12期
页码:
25-28
栏目:
应用与开发
出版日期:
2012-12-28

文章信息/Info

Title:
Study on Corrosion Resistance of A790 S31803 Duplex Stainless Steel Welded Joint
文章编号:
1001-3938(2012)12-0025-04
作者:
谢树军杨清
(湛江南海西部石油合众近海建设有限公司,广东 湛江 524057)
Author(s):
YANG Qing XIE Shujun
(United Offshore Construction Co., Ltd., CONHW, Zhanjiang 524057, Guangdong, China)
关键词:
耐腐蚀性能双相不锈钢焊接接头点蚀应力腐蚀
Keywords:
corrosion resistance duplex stainless steel welded joint pitting corrosion stress corrosion
分类号:
TG113.26
DOI:
1001-3938(2012)12-0025-04
文献标志码:
B
摘要:
为了研究国产A790 S31803双相不锈钢管焊件在特殊油气田气体组分中的耐腐蚀性能,对焊接接头进行了拉伸和弯曲试验。测定了火焰校正后的铁素体含量,在模拟高温高压CO2点蚀、CO2和H2S应力腐蚀等环境下,参照ASTM G48和ASTM G39等标准对焊接接头进行了耐腐蚀性试验,通过目测、着色探伤、渗透检测、显微组织观察等检测,结果表明:焊接接头抗拉强度为746 MPa,屈服强度为450 MPa;铁素体和奥氏体相比例接近1∶1;腐蚀后经检测没有发现腐蚀缺陷,失重没有超标,腐蚀速率低,耐腐蚀性能良好,试验结果达到工程应用的要求。
Abstract:
In order to study the corrosion resistance of duplex stainless steel(A790 S31803) pipe weldment which works in special gas environment of oil field, tensile and bending experiments were conducted on welded joint, ferrite content after the flame corrected was detected. In the environment of simulating high temperature and high pressure CO2 pitting corrosion, CO2 and H2S stress corrosion, according to ASTM G48, ASTM G39 and other standards to conduct corrosion resistance test for welded joint. Then the corroded specimen were inspected by visual inspection, dye detection, penetration testing, microstructure observation and so on. The result showed that tensile strength (σb) and yield strength (σs) of the welded joint are 746 MPa and 450 MPa respectively, and the content of the ferrite and austenite phase are the same. There is no defect after the welded joint was corroded. The weight loss and the corrosion resistance are qualified, and the corrosion rate is low. So the test results meet the requirement of engineering application.

参考文献/References:

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备注/Memo

备注/Memo:
作者简介:杨 清(1980—),男,工程师,主要从事海上油气及终端维修改造工程管理工作。
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