采用放电等离子烧结(spark plasma sintering)法在低压和低温(50 MPa和400-500℃)条件下快速烧结制备出了含准晶强化相的块体Al90Mn9Ce1合金,其致密度大于98%,抗压强度超过1000 MPa.与普通高强度铝合金相比,其强度约提高1倍.结果表明,在放电等离子烧结过程中,采用大电流、短时、低温的烧结条件可使快冷雾化法制备的原始合金粉末中的准晶强化相及其它细小强化相得以保存,而局域强放电等离子体可以分解或破碎铝合金粉末表面的氧化膜,使合金粉末颗粒间的结合强度增加,制备出的块体铝合金具有高的致密度和超高强度.
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