Subsurface modifications in powder metallurgy aluminium alloy composites reinforced with intermetallic MoSi2 particles under dry sliding wear

Lieblich, Marcela; Corrochano, Javier; Ibáñez, Joaquı́n; Vadillo, V.; Walker, J. C. F.; Rainforth, W. M.

doi:10.1016/j.wear.2013.11.012

Cited by 18 publications

(9 citation statements)

References 34 publications

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“…The results show that the wear loss reduced with increasing the reinforcement content and coefficient of friction increases gradually. Normally, solid state methods are used to produce composites with high mechanical properties, because these methods deliver a uniform distribution of reinforcing phase particle in the matrix material [6][7][8][9][10]. Some trials were conducted to fabricate Al-12Si-xZrC nanocomposites using different techniques, but the mechanical alloying method is a suitable technique to fabricate Al-12Si-xZrC nanocomposites.…”

mentioning

confidence: 99%

Tribological behavior, mechanical properties and microstructure of Al-12Si-ZrC composite prepared by powder metallurgy

John¹,

Paul²,

Singh³

et al. 2017

Bulletin of the Polish Academy of Sciences Technical Sciences

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Abstract. High-energy mechanical alloying method was used to prepare Al-12Si-xZrC (x = 0, 5, 10, 15 wt. %) nanocomposites. Cylindrical preforms were prepared with an initial preform density of 89% by using a suitable die and punch assembly. The preforms were sintered in a muffle furnace with an inert gas atmosphere at a temperature of 550°C, followed by cooling until room temperature has been attained. Scanning electron microscope (SEM) and X-ray diffraction (XRD) techniques were used to characterize the composites. Pin-on-disc wear testing machine was used to determine the tribological properties of the prepared composites. The results show that the wear loss reduced with increasing the reinforcement content and coefficient of friction increases gradually. Normally, solid state methods are used to produce composites with high mechanical properties, because these methods deliver a uniform distribution of reinforcing phase particle in the matrix material [6][7][8][9][10]. Some trials were conducted to fabricate Al-12Si-xZrC nanocomposites using different techniques, but the mechanical alloying method is a suitable technique to fabricate Al-12Si-xZrC nanocomposites. No attempt has been made to fabricate Al matrix composites reinforced with ZrC particles using the P/M method. In this present paper, an effort is made to study the outcome of wear behavior of Al-12Si-xZrC nanocomposites prepared with the mechanical alloying method. These composites were characterized using SEM and XRD. The wear behavior was calculated using the weight loss method. The worn surfaces and wear debris were characterized using SEM. Experimental procedure2.1. Materials. Aluminium and silicon with 99.5% purity and particle size of 44 µm were purchased from Metal Powder Company Limited, Thirumangalam, Tamilnadu, India, and the ZrC powder with a high, 99.9% purity and particle size of 400 nm was purchased from US Research Nanomaterials, Inc., USA. The individual powders were pulverized and mixed in a high-energy ball mill with ball-to-powder weight ratio of 20:1. The milling was done at a constant speed of 300 rpm in a wet medium with a presence of toluene to avoid oxidation and agglomeration. Scanning electron microscope images were used for the analysis of mixed powder particles. Fig. 1 shows the received powders of aluminium, silicon, and zirconium carbide. From the SEM images, it can be visualized that aluminium was spherical in shape, silicon was flattened and nano-zirconium carbide had a cubic crystal shape.

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confidence: 99%

Tribological behavior, mechanical properties and microstructure of Al-12Si-ZrC composite prepared by powder metallurgy

John¹,

Paul²,

Singh³

et al. 2017

Bulletin of the Polish Academy of Sciences Technical Sciences

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“…In composites the amount of matrix and reinforcement are stated either as the weight fraction, which is related to fabrication or the volume fraction which is commonly used in property calculations. Aluminum alloys are the matrix materials used in various advanced engineering applications especially in the field of aerospace, automotive, marine and structural applications, where light weight, good thermal conductivity and corrosion is majorly required [10]. These demands are met due to the improved mechanical properties, amenability to conventional handling technique and opportunity of reduction production cost of Al components.…”

Section: Introductoionmentioning

confidence: 99%

Fabrication and Wear Behavior of Particulate Reinforced Metal Matrix Composites-An Overview

M¹,

Ramachandran²,

Nagaral³

2017

IOSR JMCE

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The composites refer to the material consisting of two or more individual constituents, in that the reinforcing particulates are embedded to the base matrix to form composite materials by improving the mechanical and tribological properties. Different types of composite materials are available and these are increasing because of their good enhanced properties, among these Metal Matrix Composites (MMCs) finds its applications in various aspects like aerospace, automotive, defense, and marine etc. These improved properties are obtained from different form of particulates which are different in their aspect ratio are mixed with base material to provide good bonding and strength between them. To obtain these enhanced properties different manufacturing techniques are followed to prepare the composites. This paper presents an overview of types of composites, different fabrication techniques available to prepare the composites and also wear behavior of particulates reinforced MMC's by studying different types of wear mechanism.

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“…[10][11][12] Materials with metallic matrix are traditionally reinforced with a hard ceramic phase, leading to the improved strength and stiffness. However, inverse composites are a completely different type of materials, which introduce a ductile metallic phase to a brittle matrix such as intermetallic compound to increase the toughness and fracture resistance.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Wear Resistance of a Novel Mo-Ni-Si System Intermetallic Composite with Ductile Mo Phase

et al. 2016

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It has been a challenge to improve the toughness of intermetallic compound at low and medium temperatures for developing wear resistance materials. The refractory metals, with a high melting point, strong atomic bonds, high ductility and toughness, are ideal toughening phases for intermetallic composites. This paper presents a novel composite having the microstructure of ductile Mo primary dendrites, binary intermetallic compound NiMo and ternary metallic silicide Mo 2 Ni 3 Si. The composite exhibits outstanding wear resistance and pretty low wear-load coef cient at ambient temperature, which are attributed to the contribution of refractory metal Mo to toughness of intermetallic matrix, in addition to the high strength and hardness of binary NiMo and ternary Mo 2 Ni 3 Si intermetallic phases. The wear mechanism analyzed by examining the worn surface and debris morphologies is in terms of soft abrasive wear.

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Subsurface modifications in powder metallurgy aluminium alloy composites reinforced with intermetallic MoSi2 particles under dry sliding wear

Cited by 18 publications

References 34 publications

Tribological behavior, mechanical properties and microstructure of Al-12Si-ZrC composite prepared by powder metallurgy

Tribological behavior, mechanical properties and microstructure of Al-12Si-ZrC composite prepared by powder metallurgy

Fabrication and Wear Behavior of Particulate Reinforced Metal Matrix Composites-An Overview

Microstructure and Wear Resistance of a Novel Mo-Ni-Si System Intermetallic Composite with Ductile Mo Phase

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