Effect of grain refinement on mechanical properties and sliding wear resistance of extruded Sc-free 7042 aluminum alloy

被引：40

作者：

Farahani, M. Vasheghani ^{[1
]}

Emadoddin, E. ^{[1
]}

Emamy, M. ^{[2
]}

Raouf, A. Honarbakhsh ^{[1
]}

机构：

[1] Semnan Univ, Fac Mat & Met, Semnan, Iran

[2] Univ Tehran, Coll Engn, Sch Met & Mat Engn, Tehran, Iran

来源：

MATERIALS & DESIGN | 2014年 / 54卷

关键词：

Aluminum alloys; Grain refinement; Mechanical properties; Wear resistance; AL-ZN-MG; TENSILE PROPERTIES; CU ALLOY; HEAT-TREATMENT; BEHAVIOR; MICROSTRUCTURE; STRENGTH; COMPOSITES; ADDITIONS; ZR;

D O I：

10.1016/j.matdes.2013.08.044

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The present study deals with an investigation on dry sliding wear behavior of grain refined Sc-free 7042 aluminum alloy by using a pin-on-disc wear test machine. Al-5Ti-1B and Al-15Zr master alloys were used as grain refining agents. The optimum amounts of added Ti and Zr in the alloy were found to be 0.03 wt.% and 0.3 wt.%, respectively. Extrusion was carried out and T6 heat treatment ware applied for all rod specimens before testing. Significant improvement in mechanical properties was obtained with the addition of grain refiners. The worn surfaces were characterized by energy dispersive X-ray spectrometry microanalysis. Results showed that the wear resistance of unrefined alloy increased with the addition of both grain refiners. Furthermore, the worn surface studies showed a mixed type of wear mechanisms; delaminating, adhesive and abrasive which took place at higher applied load. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：361 / 367

页数：7

共 33 条

[1] The effect of Al-8B grain refiner and heat treatment conditions on the microstructure, mechanical properties and dry sliding wear behavior of an Al-12Zn-3Mg-2.5Cu aluminum alloy [J].