研究了添加微量稀土氧化物Y2O3和机械合金化所制备的90W-7Ni-3Fe合金的显微组织与性能.试验采用机械合金化工艺制备含微量稀土氧化物Y2O3的90W-7Ni-3Fe复合粉末,将粉末在1 460～1 480℃烧结30 min,制备最大抗拉强度大于962 MPa、延伸率为30.8%、钨晶粒尺寸为8～12μm的细晶高性能90W-7Ni-3Fe合金.研究了稀土氧化物Y2O3对合金性能和显微组织结构特征的影响.
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