Effect of Oxygen Content on Cold Cracking Susceptibility in Weld Metal of High Strength Steel(Materials, Metallurgy & Weldability)
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概要
- 論文の詳細を見る
The purpose of this investigation is to make clear the effects of oxygen on cold cracking susceptibilities in weld metals of high strength steels. Therefore, in this study, cold cracking susceptibilities in weld metals of HY130 steel where oxygen content changes in the range 15-210 ppm were evaluated and then, in particular, the metallurgical characteristics in weld metal such as solidification behavior, microstructure, inclusion, formation and migration of austenite boundary etc. were systematically studied. Consequently, cold cracking susceptibility and intergranular fracture in weld metal increased with an increase in oxygen content. The cause of this result was inferred that many inclusions which were related to diffusible hydrogen were situated near prior-austenite boundary, because inclusions crystallizing on solidification boundary hindered the migration of austenite boundary.
- 大阪大学の論文
著者
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MATSUDA Fukuhisa
Osaka University
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NAKAGAWA Hiroji
Osaka University
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Matsumoto Takeshi
Osaka University, Dept. Mechanical Science and Bioeng.
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Shinozaki Kenji
Faculty Of Engineering Osaka University
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Shinozaki Kenji
Central Research Lab. Furukawa Electric Co. Ltd.
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Nakagawa Hiroji
Welding Research Inst. Osaka Univ.
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Matsumoto Takeshi
Osaka University:(present Office)nisshin Steel Co. Ltd.
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Matsuda Fukuhisa
Osaka Univ.
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