Effect of Precipitating Phases on Tensile Strength and Microstructural Stability of a Spray-Deposited Al-Si-Fe-Mn-Cu-Mg Alloy

J Mater Sci Technol ›› 2004, Vol. 20 ›› Issue (01): 78-80.

• Research Articles • Previous Articles Next Articles

Effect of Precipitating Phases on Tensile Strength and Microstructural Stability of a Spray-Deposited Al-Si-Fe-Mn-Cu-Mg Alloy

Feng WANG, Yuansheng JIN, Dunyuan HU, Jishan ZHANG

State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China

Received:1900-01-01 Revised:1900-01-01 Online:2004-01-28 Published:2009-10-10
Contact: Feng WANG

Abstract

Abstract: 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.

Key words: Spray deposition, Precipitate, Tensile strength, Microstructural stability

Feng WANG, Yuansheng JIN, Dunyuan HU, Jishan ZHANG. Effect of Precipitating Phases on Tensile Strength and Microstructural Stability of a Spray-Deposited Al-Si-Fe-Mn-Cu-Mg Alloy[J]. J Mater Sci Technol, 2004, 20(01): 78-80.

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Effect of Precipitating Phases on Tensile Strength and Microstructural Stability of a Spray-Deposited Al-Si-Fe-Mn-Cu-Mg Alloy

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