Influence of grain size on mechanical properties of isostatically pressed beryllium materials

来源期刊：中国有色金属学报(英文版)2000年第2期

论文作者：钟景明 王战宏 聂大钧 闵学仁 王学泽 付晓旭 王零森

文章页码：228 - 231

Key words：beryllium; mechanical property; grain size

Abstract: Six kinds of beryllium powders with different particle sizes (4~15μm) and low oxygen prepared by impact grinding were compacted and consolidated by cold-hot isostatic pressing (CIP-HIP). The tensile strength, yield strength, elongation and micro-yield strength(MYS) of the materials were tested and it showed that the strength of the materials, especially the yield strength and micro yield strength(MYS) increase obviously with the refinement of grain size. From the XRD and TEM, the second phase is BeO which is finely dispersed in matrix. This is considered to be the main strengthening mechanism for CIP-HIPed beryllium materials with higher purity.