ほう酸アルミニウムウィスカ強化AC8Aアルミニウム合金複合材料の強度と耐熱性評価
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概要
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An AC8A aluminum alloy matrix composite reinforced with 20vol% aluminum-borate whisker was fabricated by squeeze casting and its mechanical properties were evaluated. Tensile strength of the composite was about 430MPa and 250MPa at room temperature and 573K, respectively. The Young's modulus at room temperature was as high as 107 GPa, while the average thermal expansion coefficient between room temperature and 573K was as low as 14.5×10-6/K. The decrease in strength during exposure at up to 573K was small. The composite showed good heat-shock resistance for the heat cycle between room temperature and 673K. The properties of the obtained composite were found to be useful for the elevated temperature materials such as car engine components.
- 一般社団法人 軽金属学会の論文
一般社団法人 軽金属学会 | 論文
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