Research on clarication of fatigue mechanism in metal matrix composites and evaluation method for its mechanical characteristics
Research on clarication of fatigue mechanism in metal matrix composites and evaluation method for its mechanical characteristics
批准号:
05650084
负责人:
NOGUCHI Hiroshi
金额:
$1.22万
依托单位:
依托单位国家:
日本
项目类别:
Grant-in-Aid for General Scientific Research (C)
财政年份:
1993
资助国家:
日本
项目状态:
已结题
起止时间:
1993 至 1994
中文摘要
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英文摘要
In this research, rotating-bending and push-pull fatigue tests of the SiC whisker reinforced 6061-T6,2024-T4 and 7057-6T aluminum alloy made by powder metallurgy were carried out to investigate the fatigue mechanism of plain and notched specimens at room temperature. The fatigue mechanisms in three materials were clarified through successive surface observations using the plastic replica method. Obtained results are as follows.(1) Fatigue strength of all MMC increase and are about as high as the steel.(2) The fatigue life is consumed in the fatigue propagation life of small crack by 100mum.(3) All MMC has a notch sensitivity, and the fatigue limit with a blunt notch has a large statistical factor.(4) It is indicated from (3) andf (4) that the fatigue life of all MMC has a large scatter.(5) A simple method for predictiction of statistical fatigue life is important.(6) There is an optimum volume fraction of SiC whisker for each mechanical property, and it is dependent on the characteristics of matrix.
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野口,尾田: "SiCウィスカ強化アルミニウム合金の疲労強度について" 平成7年度日本機械学会材料力学講演会予定.
Noguchi、Oda:“论SiC晶须强化铝合金的疲劳强度”1995年日本机械工程学会材料力学讲座日程。
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通讯作者:
野口・尾田: "SiCウィスカ強化アルミニウム合金の疲労強度について" 平成7年度日本機械学会材料力学講演会にて講演予定.
野口和小田:“关于SiC晶须强化铝合金的疲劳强度” 预定在1995年日本机械工程学会材料力学会议上发表演讲。
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野口・西谷・尾田: "金属基複合材料の疲労劣化の機構" 日本材料学会平成6年度総会講演会. 講演予定.
Noguchi、Nishitani 和 Oda:“金属基复合材料的疲劳恶化机制”1994 年材料科学学会大会演讲日程。
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通讯作者:
Hiroshi NOGUCHI and Yasuji ODA: "Fatigue strength of SiC whisker reinforced aluminum alloy." Preprint of the Japanese Society of Mechanical Engineers Meeting in Morioka. (1995)
Hiroshi NOGUCHI 和 Yasuji ODA:“SiC 晶须增强铝合金的疲劳强度。”
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