Plasma Arc Welding between AISI 304 and AISI 201 Stainless Steels Using a Technique of Mixing Nitrogen in Shielding Gas

被引：11

作者：

Chandra-ambhorn, Somrerk ^{[1
]}

Chauiphan, Wichan ^{[2
]}

Sukwattana, Nich-chanuch ^{[1
]}

Pudkhunthod, Narin ^{[1
]}

Komkham, Sakarat ^{[1
]}

机构：

[1] King Mongkuts Univ Technol North Bangkok, Fac Engn, Dept Mat & Prod Technol Engn, 1518 Pibulsongkram Rd, Bangkok 10800, Thailand

[2] Rajamankala Univ Technol Krungthep, Fac Engn, Dept Ind Engn, Bangkok 10120, Thailand

来源：

MATERIALS PROCESSING TECHNOLOGY II, PTS 1-4 | 2012年 / 538-541卷

关键词：

Nitrogen; plasma arc welding; stainless steel; delta ferrite; corrosion; DELTA-FERRITE; PARAMETERS;

D O I：

10.4028/www.scientific.net/AMR.538-541.1464

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Plasma arc welding was applied to join AISI 304 and AISI 201 stainless steel sheets. Nitrogen was mixed in argon shielding gas to help control microstructure and improve corrosion property of the weld. It was found that increasing nitrogen in shielding gas from 0 to 12 %v/v reduced the amount of delta ferrite in austenite matrix of the weld from 20 to 16 %v/v. This indicated the role of nitrogen as an austenite stabiliser. From polarisation test in 3.5wt% NaCl solution at 25 degrees C, increasing nitrogen in shielding gas nobly shifted a pitting corrosion potential from 401 to 472 mV vs Ag/AgCl. This corresponded to the increase of nitrogen content in the weld from 0.11 to 0.19 wt%.

引用

页码：1464 / +

页数：2

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