Improvement of weld solidification cracking susceptibility and the properties of dissimilar welds using austenitic metals
| Project/Area Number |
15K18223
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Composite materials/Surface and interface engineering
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| Research Institution | Osaka University (2016-2017)
Hiroshima University (2015) |
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Principal Investigator |
Kota Kadoi 大阪大学, 接合科学研究所, 准教授 (40454029)
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| Research Collaborator |
SHINOZAKI Kenji 広島大学, 大学院工学研究院, 教授 (70154218)
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2016: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2015: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Keywords | 溶接・接合 / 高温割れ / 凝固割れ / 凝固工学 / 異材溶接 / 溶接接合 / 耐食性 |
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| Outline of Final Research Achievements |
Microstructural evolution during dissimilar welding using austenitic metals was investigated. Besides, the properties of the weld metals such as the weld solidification cracking susceptibility, the corrosion resistance and so on, were studied.
Containing niobium strongly influenced on the solidification sequence and the solidification cracking susceptibility. The tendency of the cracking susceptibility was dependent on the type of alloying element owing to the change of the partitioning behavior. The calculation of the solidification sequence can predict the tendency of the cracking susceptibility.
Molybdenum and chromium can improve the resistances of intergranular corrosion and pitting corrosion in the weld metals.
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Report
(4 results)
Research Products
(7 results)
