论文标题
纳米晶体W-5WT的火花等离子体烧结期间的微观结构演变和致密化。％TA合金
Microstructure evolution and densification during spark plasma sintering of nanocrystalline W-5wt.%Ta alloy
论文作者
论文摘要
目前的工作报告了TA对纳米晶体W.纳米晶体W-5WT的非等热和火花等离子体烧结过程中TA的影响。％TA合金粉是使用机械合金合成的。使用X射线衍射线轮廓分析对纳米晶粉进行彻底表征。此外，在使用扩张测定法的非等温烧结过程中研究了纳米晶粉的收缩行为。随后，使用高达1600°C的火花等离子体烧结合并合金粉。使用电子反向散射衍射详细研究了TA在纳米晶W中稳定微观结构的作用。火花等离子体烧结的w-5wt。％ta合金的平均晶粒尺寸为1.73微米。
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 synthesized using mechanical alloying. The nanocrystalline powder was characterized thoroughly using X-ray diffraction line profile analysis. Furthermore, the shrinkage behavior of nanocrystalline powder was investigated during non-isothermal sintering using dilatometry. Subsequently, the alloy powder was consolidated using spark plasma sintering up to 1600 °C. The role of Ta on stabilizing 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 as 1.73 micron.
