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首页> 外文期刊>Philosophical Magazine Letters >Microstructure evolution and densification during spark plasma sintering of nanocrystalline W-5wt.%Ta alloy
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Microstructure evolution and densification during spark plasma sintering of nanocrystalline W-5wt.%Ta alloy

机译:纳米晶体W-5WT的火花等离子体烧结过程中的微观结构演化与致密化。%TA合金

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摘要

The present work reports the effect of Ta on densification and microstructure evolution during non-isothermal and spark plasma sintering of nanocrystalline W. Nanocrystalline W-5wt.%Ta alloy powder was synthesised using mechanical alloying. The nanocrystalline powders were characterised thoroughly using X-ray diffraction line profile analysis. Furthermore, the shrinkage behaviour of nanocrystalline powder was investigated during non-isothermal sintering using dilatometry. Subsequently, the alloy powder was consolidated using spark plasma sintering up to 1600 degrees C. The role of Ta on stabilising the microstructure during spark plasma sintering of nanocrystalline W was investigated in detail using electron backscatter diffraction. The average grain size of spark plasma sintered W-5wt.%Ta alloy was observed as1.73 +/- 1 mu m.
机译:本作者报告了TA对纳米晶W.纳米晶W-5WT的非等温和火花血浆烧结期间致密化和微观结构演化的影响。使用机械合金化合成%TA合金粉末。 使用X射线衍射线谱分析彻底地表征纳米晶体粉末。 此外,使用稀释测定,在非等温烧结期间研究了纳米晶粉末的收缩行为。 随后,使用电气回散衍射详细研究了高达1600℃的火花等离子体烧结巩固了合金粉末在火花等离子体烧结期间稳定微观结构的作用。 火花等离子体烧结W-5wt的平均晶粒尺寸。%Ta合金被观察到As1.73 +/-1μm。

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