Mechanical Behaviour and Wear Resistance of Ce-PSZ Alumina Matrix Composites

The work presents the possibility of fabricating materials for use as a matrix in sintered metallic-diamond tools with increased mechanical properties and abrasion wear resistance. In this study, the effect of micro-sized SiC, Al2O3, and ZrO2 additives on the wear behaviour of dispersion-strengthened metal-matrix composites was investigated. The development of metal-matrix composites (based on Fe–Mn–Cu–Sn–C) reinforced with micro-sized particles is a new approach to the substitution of critical raw materials commonly used for the matrix in sintered diamond-impregnated tools used for the machining of abrasive stone and concrete. The composites were prepared using spark plasma sintering (SPS). Apparent density, microstructural features, phase composition, Young’s modulus, hardness, and abrasion wear resistance were determined. An increase in the hardness and wear resistance of the dispersion-strengthened composites as compared to the base material (Fe–Mn–Cu–Sn–C) and the commercial alloy Co-20% WC provides metallic-diamond tools with high-performance properties.

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Surface modification of graphene oxide nanoplatelets and its influence on mechanical properties of alumina matrix composites

Journal of the European Ceramic Society ◽

10.1016/j.jeurceramsoc.2016.11.010 ◽

2017 ◽

Vol 37 (4) ◽

pp. 1587-1592 ◽

Cited By ~ 21

Author(s):

Jaroslaw Wozniak ◽

Agnieszka Jastrzębska ◽

Tomasz Cygan ◽

Andrzej Olszyna

Keyword(s):

Mechanical Properties ◽

Surface Modification ◽

Graphene Oxide ◽

Matrix Composites ◽

Alumina Matrix

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Microstructure and fracture toughness of nickel particle toughened alumina matrix composites

Journal of Materials Science ◽

10.1007/bf00352885 ◽

1996 ◽

Vol 31 (4) ◽

pp. 875-880 ◽

Cited By ~ 54

Author(s):

Xudong Sun ◽

J. A. Yeomans

Keyword(s):

Fracture Toughness ◽

Nickel Particle ◽

Matrix Composites ◽

Alumina Matrix

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The thermo-mechanical behaviour of W-Cu metal matrix composites for fusion heat sink applications: The influence of the Cu content

Journal of Nuclear Materials ◽

10.1016/j.jnucmat.2017.08.020 ◽

2018 ◽

Vol 498 ◽

pp. 468-475 ◽

Cited By ~ 22

Author(s):

E. Tejado ◽

A.v. Müller ◽

J.-H. You ◽

J.Y. Pastor

Keyword(s):

Metal Matrix Composites ◽

Mechanical Behaviour ◽

Heat Sink ◽

Metal Matrix ◽

Matrix Composites ◽

Cu Content

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Development of High-Performance SiCp/Al-Si Composites by Equal Channel Angular Pressing

Metals ◽

10.3390/met8100738 ◽

2018 ◽

Vol 8 (10) ◽

pp. 738 ◽

Cited By ~ 5

Author(s):

Qiong Xu ◽

Aibin Ma ◽

Junjie Wang ◽

Jiapeng Sun ◽

Jinghua Jiang ◽

...

Keyword(s):

Wear Resistance ◽

Equal Channel Angular Pressing ◽

High Performance ◽

Adhesive Wear ◽

Processing Route ◽

Matrix Composites ◽

New Approach ◽

Angular Pressing ◽

The Matrix ◽

Industry Applications

Relatively low compactness and unsatisfactory uniformity of reinforced particles severely restrict the performance and widespread industry applications of the powder metallurgy (PM) metal matrix composites (MMCs). Here, we developed a combined processing route of PM and equal channel angular pressing (ECAP) to enhance the mechanical properties and wear resistance of the SiCp/Al-Si composite. The results indicate that ECAP significantly refined the matrix grains, eliminated pores and promoted the uniformity of the reinforcement particles. After 8p-ECAP, the SiCp/Al-Si composite consisted of ultrafine Al matrix grains (600 nm) modified by uniformly-dispersed Si and SiCp particles, and the composite relative density approached 100%. The hardness and wear resistance of the 8p-ECAP SiCp/Al-Si composite were markedly improved compared to the PM composite. More ECAP passes continued a trend of improvement for the wear resistance and hardness. Moreover, while abrasion and delamination dominated the wear of PM composites, less severe adhesive wear and fatigue mechanisms played more important roles in the wear of PM-ECAP composites. This study demonstrates a new approach to designing wear-resistant Al-MMCs and is readily applicable to other Al-MMCs.

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