Combined Effect of Current Pulsation and Zr Addition on Improvement of Solidification Cracking of Al-Zn-Mg Alloy Weld Metal : Effect of Additional Element on Weld Solidification Crack Susceptibility of Al-Zn-Mg Alloy (Report IV)(Materials, Metallurgy & We
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概要
- 論文の詳細を見る
It was made clear that current pulsation in GMAW had a beneficial effect to improve the solidification crack susceptibility of Al-Zn-Mg alloy weld metal by using Zr-contained Al-5 to 6%Mg tentative filler wires. This beneficial effect was due mainly to grain refinement in weld metal. However, there were an optimum value in pulse frequency of about 30Hz and minimum content of Zr to be contained in weld metal, that is, about 0.15% within the limited condition in this study. Unless these two requirements were not satisfied, this beneficial effect of current pulsation did not appear.
- 大阪大学の論文
著者
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NAKATA Kazuhiro
Osaka university
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MATSUDA Fukuhisa
Osaka University
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Nakata Kazuhiro
Osaka Univ. Ibaraki
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TSUKAMOTO Kenji
Showa Aluminum Corporation
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JOHGAN Shigetoshi
Showa Aluminum Corporation
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Matsuda Fukuhisa
Osaka Univ.
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