In the present study, the influence of powder characteristics on the densification behavior and microstructure evolution of the W-Cr-Zr alloy during consolidation was investigated. The W-Cr-Zr alloy powders were prepared through mechanical alloying in different modes, i.e. continuous mechanical alloying (CMA) and intermittently mechanical alloying (IMA). It can be found that the IMA powders have a higher grain boundary density and homogenous microstructure, which exhibits a better sintering performance than the CMA powders. The IMA powders are capable of full densification and homogenization after sintering at low temperature (1395 °C), with the grain size approaching 284 nm. Through the characterization of antioxidant properties, it was confirmed that the alloy prepared using IMA powders has an excellent anti-oxidation performance.

在本研究中，研究了粉末特性对 W-Cr-Zr 合金在固结过程中的致密化行为和显微组织演变的影响。W-Cr-Zr合金粉末通过不同方式的机械合金化制备，即连续机械合金化（CMA）和间歇机械合金化（IMA）。可以发现，IMA粉体具有更高的晶界密度和均匀的微观结构，其烧结性能优于CMA粉体。IMA粉末在低温（1395°C）下烧结后能够充分致密化和均质化，晶粒尺寸接近284 nm。通过对抗氧化性能的表征，证实使用IMA粉末制备的合金具有优异的抗氧化性能。