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首页> 外文期刊>Journal of Materials Engineering and Performance >Multi-Phase Nanocrystalline Al Alloy with Superior Strength and Modulus at Elevated Temperatures
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Multi-Phase Nanocrystalline Al Alloy with Superior Strength and Modulus at Elevated Temperatures

机译：高温下具有优异强度和模量的多相纳米晶铝合金

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摘要

A multiphase nanocrystalline Al_(93)Fe_3Cr_2Ti_2 alloy containing 30 vol percent intermetallic particles was prepared via mechanical alloying, followed by hot extrusion. Systematic compressive tests and modulus measurements were performed as a function of temperature and strain rate. High strengths and moduli at both ambient and elevated temperatures were demonstrated. The results clearly indicated that the multiphase nanocrystalline Al_(93)Fe_3Cr_2Ti_2 alloy has great potential for structural applications. Furthermore, the strength of the multiphase nanocrystalline Al alloy at both room and elevated temperatures increased with the decrease in the grain size, suggesting that diffusional creep is suppressed in this alloy, even though the grain size of the alloy is below 100 nm.
机译：通过机械合金化，然后热挤压，制备了包含30vol％金属间化合物颗粒的多相纳米晶Al_（93）Fe_3Cr_2Ti_2合金。根据温度和应变率进行系统的压缩测试和模量测量。在环境温度和高温下均显示出高强度和模量。结果清楚地表明，该多相纳米晶Al_（93）Fe_3Cr_2Ti_2合金具有很大的结构应用潜力。此外，多相纳米晶体铝合金在室温和高温下的强度都随着晶粒尺寸的减小而增加，这表明即使该合金的晶粒尺寸小于100nm，该合金中的扩散蠕变也得到抑制。

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