Al-Al7Cr eutectic in Al-Cr alloys synthesized by laser alloying

被引：18

作者：

Almeida, A. ^{[1
]}

Vilar, R. ^{[1
]}

机构：

[1] Univ Tecn Lisboa, Inst Super Tecn, Dept Mat Engn, P-1049001 Lisbon, Portugal

来源：

SCRIPTA MATERIALIA | 2010年 / 63卷 / 08期

关键词：

Aluminium alloys; Laser alloying; Solidification microstructure; Eutectic solidification; RAPID SOLIDIFICATION; PHASE; CRYSTALLINE; EQUILIBRIUM;

D O I：

10.1016/j.scriptamat.2010.06.022

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Al-Cr surface alloys prepared by injecting Cr powder into the melt pool generated in an Al substrate by a high-powered CO2 laser beam followed by laser remelting present a microstructure consisting of equiaxed cells comprised of extremely fine Al7Cr particles radially distributed in an alpha-Al matrix. The analysis of this microstructure shows that it originated from solidification. Its morphology is typically eutectic, confirming the existence of the L -> alpha-Al + Al7Cr eutectic reaction predicted by some Al-Cr phase diagram configurations proposed recently. (C) 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：811 / 814

页数：4

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