Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报(英文版)

Transactions of Nonferrous Metals Society of China

Vol. 1    No. 1    October 1991

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THE CONSOLIDATION OF QUASICRYSTALLINE POWDER UNDER SUPERHIGH PRESSURE'
Chen Zhenhua, Huang Peiyun, Jiang Xiangyang, Wang Yun, Zhou Duosan

Central South University of Technology, Changsha 410083, China

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.

 

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

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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