THE CONSOLIDATION OF QUASICRYSTALLINE POWDER UNDER SUPERHIGH PRESSURE'

来源期刊：中国有色金属学报(英文版)1991年第1期

论文作者：Chen Zhenhua Huang Peiyun Jiang Xianyang Wang Yun Zhou Duosan

文章页码：61 - 65

Key words：powder metallurgy, compaction/rapid solidification, quasicrystals

Abstract: Al-based quasicrystalline powders were consolidated by a new technique. This paper describes the consolidation process and the properties of bulk quasicrystalline materials. The bulk, dense, full quasicrystalline samples were obtained by means of consolidating quasicrystalline powders at superhigh pressure below their crystallizing temperature or at low temperture. At superhigh pressure, the thermal stability of the quasicrystalline powders increased, while the quasicrystalline powders containing some crystalline phases,were purified, that the crystalline phases disappeared and the amount of quasicrystalling phases increased. Besides,the consolidated materials possessed high strength and were free from flaws and Mach holes caused by shock waves; therefore, this method is better than the explosion consolidation technique.