Microstructure features affecting mechanical properties and corrosion behavior of a hypoeutectic Al-Ni alloy

被引：50
作者：
Osorio, Wislei R. [1 ]
Peixoto, Leandro C. [1 ]
Cante, Manuel V. [1 ]
Garcia, Amauri [1 ]
机构：
[1] Univ Estadual Campinas, Dept Mat Engn, UNICAMP, BR-13083860 Campinas, SP, Brazil
来源：
MATERIALS & DESIGN | 2010年 / 31卷 / 09期
基金：
巴西圣保罗研究基金会;
关键词：
ALUMINUM-ALLOY; SI ALLOY; VIBRATION; RESISTANCE; IRON;
D O I：
10.1016/j.matdes.2010.04.045
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The aim of this article is to analyze the influence of microstructural parameters on the mechanical properties and corrosion behavior of a hypoeutectic Al-Ni alloy. Experimental results include secondary dendrite arm spacing, corrosion potential, current density, pitting potential, ultimate tensile strength and yield strength. It was found that cooling rates during solidification of about 0.6 degrees C/s and 8 degrees C/s can provide secondary dendritic spacings of 7 mu m and 16 mu m, respectively. Although the microstructure having their phases finely and homogeneously distributed was shown to induce better mechanical properties and higher pitting potential, its general corrosion resistance decreased when compared with the corresponding results of the coarser microstructure. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码：4485 / 4489
页数：5
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