摘要
研究了Al-Cu-Fe-Pd-Mn和Al-Cr-Pd-Mn两种多元系合金的准晶形成规律、准晶态合金的成分范围和准晶的热稳定性。研究结果表明,Al-Cu-Fe-Pd-Mn准晶态合金的成分范围基本上可按如下范围选择构成,Al:60～75(at％),Cu:0～20(at％),Fe:0～15(at％),Pd:0～20(at％),Mn:0～10(at％)。这类多元系准晶是一种热稳定性准晶。Al-Cr-Pd-Mn准晶态合金的成分范围可按如下范围选择构成,Al:65～85(at％),Cr:0～15(at％),Pd:0～20(at％),Mn:0～10(at％)。在Al-Cr-Pd-Mn多元系准晶中,当Cr含量较低时为热稳定性准晶;当Cr含量较高时为非热稳定性准晶。
In this paper, formation characteristics, composition scope and thermal stability of Al-Cu-Fe-Pd-Mn, Al-Cr-Pd-Mn quasicrystals are presented. It is found that in the composition scope of Al: 60～75 (at%), Cu, 0～20 (at%), Fe: 0～15 (at%), Pd: 0～20 (at%), Mn: 0～10 (at%), thermally stable Al-Cu-Fe-Pd-Mn qua-sicrystals can be formed; for Al-Cr-Pd-Mn alloys, in the scope of Al: 65～85 (at%), Cr: 0～15 (at%), Pd: 0～20 (at%), Mn: 0～10 (at%), quasicrystals can be obtained; low Cr content alloys are thermally stable andhigh Cr content quasicrystals are metastable.
基金
China-Japan Collaborating projcct
关键词
准晶态合金
凝固
热稳定性
quasicrystals
rapid solidification
thermal stability
