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Microstructure and Mechanical Property of Brazed Joint in Duplex Stainless Steel, UNS32550  

김대업 (현대모비스㈜ 기술연구소)
강정윤 (부산대학교 금속공학과)
Publication Information
Journal of Welding and Joining / v.21, no.2, 2003 , pp. 64-69 More about this Journal
Abstract
The bonding phenomena and mechanical property of duplex stainless steel during brazing have been investigated. The UNS32550 was used for base metal, and the MBF50 was used for insert metal. Brazing was carried out under the various conditions (brazing temperature : 1473K, 1498K, holding time : 0∼1.8ks). There were various microconstituents in the bonded interlayer because of reaction between liquid insert metal and base metal. In the early stage of brazing, BN is formed in the bonded interlayer and base metal near the bonded layer. Cr made is formed in the bonded interlayer. The amount of BN and Cr nitrides decrease with the increase of bonding temperature and holding time. Superior shear strength of 550MPa is obtained by restraining the formation of nitrides. (Received January 17, 2003)
Keywords
Duplex stainless steel; Brazed joint; Microconstituent; Joint property; Shear strength;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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