期刊
METALS AND MATERIALS INTERNATIONAL
卷 12, 期 3, 页码 245-248出版社
KOREAN INST METALS MATERIALS
DOI: 10.1007/BF03027538
关键词
tungsten; yttrium oxide; relative density; transition temperature; hardness
In this study, the relative density and hardness of Y(2)O(3) dispersed tungsten alloy were investigated as functions of the Y(2)O(3) content and sintering temperature. The sintering temperature and the amount of the second phase were varied from 1800 to 2500 degrees C and 0 to 2.0 weight per, respectively. The relative density of the alloys is higher than that of pure tungsten in the range from 2000 to 2500 degrees C, whereas the density is lower at 1800 degrees C. As the Y(2)O(3) content increases, the sintered density increases at a given temperature. The transition temperature (T(tr)), where the relative density of the alloys exceeds that of pure tungsten, is reduced with increased Y(2)O(3) particle content. In order to examine the effect of the second phase on the mechanical property, the hardness of pure tungsten and the alloys are measured. The hardness is mainly dependent upon the relative density of the alloys, rather than the amount of the second phase and tungsten grain size. The relationship between hardness and density is discussed according to the plasticity theory of porous materials.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据