Development of stainless steel particulate reinforced AA6082 aluminum matrix composites with enhanced ductility using friction stir processing

被引：68
作者：
Selvakumar, S. [1 ,2 ]
Dinaharan, I. [3 ]
Palanivel, R. [3 ]
Babu, B. Ganesh [4 ]
机构：
[1] Nehru Inst Technol, Dept Mech Engn, Coimbatore 641105, Tamil Nadu, India
[2] Anna Univ, Dept Mech Engn, Chennai 600025, Tamil Nadu, India
[3] Univ Johannesburg, Dept Mech Engn Sci, Auckland Pk Kingsway Campus, ZA-2006 Johannesburg, South Africa
[4] Roever Coll Engn & Technol, Dept Mech Engn, Perambalur 621212, Tamil Nadu, India
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2017年 / 685卷
关键词：
Aluminum matrix composites; Friction stir processing; Stainless steel; Microstructure; Tensile strength; MECHANICAL-PROPERTIES; ALLOY COMPOSITES; MICROSTRUCTURE; AL; FABRICATION; PARTICLES; SURFACE; NANOCOMPOSITES; STRENGTH; BEHAVIOR;
D O I：
10.1016/j.msea.2017.01.022
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Aluminum matrix composites (AMCs) reinforced with various ceramic particles usually exhibit poor ductility. One solution to increase ductility is the usage of hard metallic or alloy particles as reinforcements. An attempt was made to reinforce stainless steel (SS) particles to prepare AA6082/(0,6,12 and 18 vol%) SS AMCs via friction stir processing (FSP). SS particles were effectively embedded in the aluminum matrix in its alloy form without any detrimental interfacial reaction. The distribution of SS particles in the composite was fairly homogenous. All regions inside the stir zone were filled with SS particles. The composite showed equiaxed fine grains due to dynamic recrystallization and pinning effect. The incorporation of SS particles enhanced the tensile strength of the composites without sacrificing ductility. A network of well developed dimples was observed on the fracture surfaces of the composites ensuring ductility.
引用
收藏
页码：317 / 326
页数：10
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