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首页> 外文期刊>Scripta materialia >A high-strength bulk nanocrystalline Al–Fe alloy processed by mechanical alloying and spark plasma sintering
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A high-strength bulk nanocrystalline Al–Fe alloy processed by mechanical alloying and spark plasma sintering

机译:机械合金化和火花等离子体烧结处理的高强度块状纳米Fe-Al合金

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摘要

A bulk nanocrystalline Al–5 at.% Fe alloy was synthesized by mechanical alloying and spark plasma sintering. The alloy exhibited a very high compressive yield strength of 1 GPa with a plastic strain of 0.3. The alloy consists of coarse α-Al grains that form from powder boundaries and nanocrystalline regions composed of α-Al and Al6Fe phases. The combination of the coarse and nanoscale grains are considered to be the reason for the large plastic strain in such a high-strength material.
机译:通过机械合金化和火花等离子体烧结合成了块状纳米Al-5 at。%Fe合金。该合金表现出非常高的1 GPa压缩屈服强度,塑性应变为0.3。该合金由由粉末边界和由α-Al和Al6Fe相组成的纳米晶区域形成的粗α-Al晶粒组成。粗晶粒和纳米晶粒的结合被认为是在这种高强度材料中塑性应变大的原因。

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