摘要
对喷射沉积快速凝固Ａｌ－Ｓｉ－Ｆｅ－Ｃｕ－Ｍｇ合金的相组成进行了分析。结果表明：合金中含有α－Ａｌ、β－Ｓｉ、δ（ＦｅＳｉ２Ａｌ４）、Ａｌ８Ｓｉ６Ｍｇ３Ｆｅ和β（Ｆｅ２Ｓｉ２Ａｌ９）等相；初晶硅相呈颗粒状，共晶硅相和δ（ＦｅＳｉ２Ａｌ４）呈细小的片状，Ａｌ８Ｓｉ６Ｍｇ３Ｆｅ相呈细小的颗粒状；经Ｔ６工艺热处理后，新析出Ａｌ２Ｃｕ相，Ａｌ８Ｓｉ６Ｍｇ３Ｆｅ相数量增加，少量δ（ＦｅＳｉ２Ａｌ４）转化为β（Ｆｅ２Ｓｉ２Ａｌ９）。
A spray deposited Al Si Fe Cu Mg alloy has been prepared,and the phases in the alloy have been investigated. α Al,β Si,δ(FeSi 2Al 4),Al 8Si 6Mg 3Fe and β(Fe 2Si 2Al 9)phases have been identified in the alloy. T6 tempering causes the precipitation of Al 2Cu phase.The primary silicon phase is granular, eutectic silicon phase is lamellar, δ(FeSi 2Al 4) phase is acicular,and β(Fe 2Si 2Al 9)phase comes from the transformation of δ(FeSi 2Al 4) phase,Al 8Si 6Mg 3Fe phase is small granular as well,and disperses in the matrix .
出处
《粉末冶金工业》
CAS
1999年第2期17-22,共6页
Powder Metallurgy Industry
