Charecterization of molybdenum particles reinforced A16082 aluminum matrix composites with improved ductility produced using friction stir processing | Health & Environmental Research Online (HERO)

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Citation
Tags

HERO ID

4848083

Reference Type

Journal Article

Title

Charecterization of molybdenum particles reinforced A16082 aluminum matrix composites with improved ductility produced using friction stir processing

Author(s)

Selvakumar, S; Dinaharan, I; Palanivel, R; Babu, BG

Year

2017

Is Peer Reviewed?

Journal

Materials Characterization
ISSN: 1044-5803
EISSN: 1873-4189

Volume

125

Page Numbers

13-22

DOI

10.1016/j.matchar.2017.01.016

Web of Science Id

WOS:000397548500003

Abstract

Aluminum matrix composites (AMCs) reinforced with various ceramic particles suffer a loss in ductility. Hard metallic particles can be used as reinforcement to improve ductility. The present investigation focuses on using molybdenum (Mo) as potential reinforcement for Mo(0,6,12 and 18 vol.%)/6082AlAMCs produced using friction stir processing (FSP). Mo particles were successfully retained in the aluminum matrix in its elemental form without any interfacial reaction. A homogenous distribution of Mo particles in the composite was achieved. The distribution was independent upon the region within the stir zone. The grains in the composites were refined considerably due to dynamic recrystallization and pinning effect. The tensile test results showed that Mo particles improved the strength of the composite without compromising on ductility. The fracture surfaces of the composites were characterized with deeply developed dimples confirming appreciable ductility. (C) 2017 Elsevier Inc. All rights reserved.

Keywords

Aluminum matrix composites; Friction stir processing; Molybdenum; Microstructure; Tensile strength