Bar billet containing yttrium and tungsten as well as preparation method and application of bar billet

The invention discloses a yttrium-tungsten-containing bar billet and a preparation method and application thereof, and relates to the technical field of tungsten products, and the yttrium-tungsten-containing bar billet is made of tungsten alloy. The tungsten alloy comprises yttrium oxide; the mass percent of yttrium oxide in the tungsten alloy is 0.5%-1.2%; the average grain size of the yttrium-tungsten-containing bar billet is 6000/mm < 2 > or above. The tungsten alloy is prepared by adding the yttrium element into tungsten, yttrium oxide formed by the yttrium element serves as second-phase particles, growth of tungsten grains in the sintering process is restrained, the alloy with fine grains is obtained, the average grain size of the yttrium-containing tungsten bar billet is further controlled, and therefore the high-strength tungsten alloy wire is prepared. 本发明公开了一种含钇钨棒坯及其制备方法与应用，涉及钨制品技术领域，该含钇钨棒坯由钨合金制成；所述钨合金中包括钇氧化物；所述钨合金中钇氧化物的质量百分数为0.5％～1.2％；所述含钇钨棒坯的平均晶粒度在6000个/mm2以上。本发明的钨合金通过在钨中添加钇元素制备得到，钇元素形成的氧化钇作为第二相颗粒，