Tensile and wear properties of as-cast and extruded AZ91-xCNT and AZ91-1B<sub>4</sub>C-1SiC-xCNT composites-Reference-Cited by-同舟云学术

Tensile and wear properties of as-cast and extruded AZ91-xCNT and AZ91-1B₄C-1SiC-xCNT composites

Published:2023-08 Issue:12 Volume:39 Page:1425-1442
ISSN:0267-0836
Container-title:Materials Science and Technology
language:en
Short-container-title:Materials Science and Technology

Author:

Goodarzi M.¹,Emamy M.²,Malekan M.²

Affiliation:

1. School of Metallurgy and Materials Engineering, Alborz Campus, University of Tehran, Alborz, Iran

2. School of Metallurgy and Materials Engineering, College of Engineering, University of Tehran, Tehran, Iran

Abstract

Tensile and wear properties of as-cast and extruded AZ91-xCNTs and AZ91-1%B4C-1%SiC-xCNT (x:0.25,0.5,1wt.%) composites were studied. Compared to as-cast AZ91 matrix alloy, hot extruded AZ91-0.25%CNT showed a significant enhancement in UTS (385 MPa) and elongation (16%), with no substantial improvement in wear properties however, the AZ91-xCNT composites containing micron-sized 1%B4C and 1%SiC particles met the lower tensile properties. Interesting wear behaviour was obtained after adding 1wt.%B4C and 1wt.%SiC to AZ91-xCNT where improvement in wear results was considerable. Development in wear properties of the AZ91-1%B4C-1%SiC-xCNT composites can be attributed to the enhanced hardness and reduced coefficient of friction. Wear analyses of two composites exhibited various wear mechanisms, but the abrasion mechanism dominated after CNT addition and hot extrusion at 20 N load.

Publisher

SAGE Publications

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science

Link

http://journals.sagepub.com/doi/pdf/10.1080/02670836.2023.2171780

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