2013 Fiscal Year Final Research Report
Systematic understanding on FSW tool damage for development of practical FSW tool for steels and titanium alloys
| Project/Area Number |
23360314
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Material processing/treatments
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| Research Institution | Tohoku University |
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Principal Investigator |
SATO Yutaka 東北大学, 工学(系)研究科(研究院), 准教授 (00292243)
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| Co-Investigator(Renkei-kenkyūsha) |
OMORI Toshihiro 東北大学, 大学院・工学研究科, 助教 (60451530)
ISHIDA Kiyohito 東北大学, 大学院・工学研究科, 教育研究支援者 (20151368)
KOKAWA Hiroyuki 東北大学, 大学院・工学研究科, 教授 (10133050)
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| Project Period (FY) |
2011-04-01 – 2014-03-31
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| Keywords | 摩擦攪拌接合 / 接合ツール / Co基耐熱合金 / ツール損傷 |
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| Research Abstract |
To widely use friction stir welding (FSW) of steels and titanium alloys in the practical applications, fundamental knowledge on damage mechanism of welding tool during FSW and tool material factors governing tool damage attempted to be obtained. The suppression of the tool damage was achieved by both enhancement of high-temperature strength and distribution of large number of hard phases with average size of 2 to 5 micrometers. The tool material designed so as to meet these requirements exhibited 1.5 times longer tool life than the present tool material.
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