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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 >Bulk Mg-3Al-Zn alloy with ultrafine grain size produced by powder metallurgy
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Bulk Mg-3Al-Zn alloy with ultrafine grain size produced by powder metallurgy

机译：粉末冶金生产的超细晶粒大块Mg-3Al-Zn合金

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摘要

Ultrafine-grained Mg-3A1-Zn alloys with an average grain size of 180 nm have been made by powder metallurgy. First, the nanocrystalline powders with mean grain size of 45 nm were produced by ball milling under argon atmosphere, and then through vacuum hot pressing at 633 K for 40 min and warm extrusion at 373 K, bulk solid samples were compacted successfully from the mechanically milled powders, and the relative density of the samples was about 98.87% (1.8003 g/cm~3). XRD, SEM and TEM analysis showed that the microstructure of the samples consists of homogeneous equiaxed grains and grain growth has taken place during the consolidation process.
机译：通过粉末冶金法制备了平均晶粒尺寸为180 nm的超细晶粒Mg-3A1-Zn合金。首先，通过在氩气气氛下进行球磨制备平均晶粒度为45 nm的纳米晶体粉末，然后通过在633 K下真空热压40分钟和在373 K下热挤压，将机械研磨成功地压实了大块固体样品粉末，样品的相对密度约为98.87％（1.8003 g / cm〜3）。 XRD，SEM和TEM分析表明，样品的微观结构由均匀的等轴晶组成，固结过程中发生了晶粒长大。

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