2013 Fiscal Year Final Research Report
Development of automotive high-strength materials without using rare earth
| Project/Area Number |
23560890
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Metal making engineering
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| Research Institution | Iwate University |
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Principal Investigator |
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| Project Period (FY) |
2011 – 2013
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| Keywords | 球状黒鉛鋳鉄 / 高強度化 / 黒鉛粒数 / レアアースレス / アルカリ土類金属 |
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| Research Abstract |
In the sample treated with a spheroidizer containing 0.01% La and 0.025% Ca, the graphite nodule count became 916 number/mm2,which is much higher than the graphite nodule count, 836 number/mm2, of the sample treated with the commercial spheroidizer(RE0.045%).Good mechanical properties, the tensile strength of 460MPa and elongation of 25%, were obtained in 30mm daiameter specimen.By the amount of RE was able to be reduced to about 1/4 compared with the RE content of a commercial spheroidizer using the spheroidizer with La and Ca.
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