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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Effect of fabrication methods on microstructure and mechanical properties of Fe_3Al-based alloys
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Effect of fabrication methods on microstructure and mechanical properties of Fe_3Al-based alloys

机译：制备方法对Fe_3Al基合金组织和力学性能的影响

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摘要

Disordered Fe(Al) solid solution powders with nano-grain size were fabricated by mechanical alloying, and subsequently the milled powders were consolidated by plasma activated sintering (PAS) and hot pressing (HP), respectively. The effect of the two fabrication methods on microstructure and mechanical properties of Fe_3Al was investigated. Disordered Fe_3Al with submicron-grain size was obtained by PAS, while ordered Fe_3Al with micron-grain size was obtained by HP. Compared with ordered Fe_3Al with micron-grain size by HP, disordered Fe_3Al with submicron-grain size by PAS had higher hardness and toughness. Fe_3 AlC_(0.5) was precipitated in all specimens with methanol addition during mechanic alloying. The precipitation of Fe_3AlC_(0.5) improved the hardness of Fe_3Al, but was harmful to the toughness of Fe_3Al.
机译：通过机械合金化制备了具有纳米粒度的无序Fe（Al）固溶体粉末，随后分别通过等离子活化烧结（PAS）和热压（HP）固结了研磨后的粉末。研究了两种制备方法对Fe_3Al组织和力学性能的影响。通过PAS获得了具有亚微米粒度的无序Fe_3Al，而通过HP获得了具有微米粒度的无序Fe_3Al。与HP的微米级有序Fe_3Al相比，PAS的亚微米级无序Fe_3Al具有更高的硬度和韧性。在机械合金化过程中，添加甲醇会在所有样品中沉淀出Fe_3 AlC_（0.5）。 Fe_3AlC_（0.5）的析出提高了Fe_3Al的硬度，但对Fe_3Al的韧性有害。

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