Feng WANG
,
Yuansheng JIN
,
Dunyuan HU
,
Jishan ZHANG
材料科学技术（英）
Spray deposition is a novel process which is used to manufacture rapidly solidified bulk and near-net-shape preforms. In this study, Al-20Si-5Fe-3Mn-3Cu-1Mg alloy was synthesized by spray deposition technique. The aging process of the alloy was investigated by differential scanning calorimetry (DSC) analysis and transmission electron microscopy (TEM). The results show that two kinds of phases, i.e. S(Al2CuMg) and sigma(Al5Cu6Mg2), precipitate from matrix and improve the tensile strength of the alloy efficiently at both the ambient and elevated temperatures (300℃). In addition, the sigma-Al5Cu6Mg2 is a relatively stable phase which improves microstructural stability of the alloy.
关键词:
Spray deposition
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