Partial Melting, Segregation Behavior and Nanomechanical Properties of AlCu₂Si₁Mg_0.6 Alloy

Abstract:

The microstructure, phase composition and nanomechanical properties of AlCu2Si1Mg0.6 alloy was studied where partial melting of grain boundaries during quenching. It was assumed that the following two low-melting eutectics were present along the grain boundaries: α-Al+Cu₂Al+Mg₂Si and α-Al+Al₁₅(Fe,Mn)₃Si₂+Si. The measurements of nanohardness and the Young’s modulus in the sub micro volumes were carried out by means of the nanoindentation method using a NanoScan-4D scanning nanohardness tester. An algorithm offered is for calculating the additional pressure that occurs when the mechanical action on the metal having a partial melting of grain boundaries.

• Periodical: Materials Science Forum (Volume 877)
• Pages: 450-454
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.877.450
• Online since: November 2016
• Authors: O.A. Chikova*, Boris V. Ovsyannikov, Pavel Reznik
• Keywords: Al-Cu-Si-Mg, EDS, Mechanical Properties, Nanoindentation, Young’s Modulus

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