scholarly journals The Effect of Reinforcement Preheating Temperatures on Tribological Behavior of Advanced Quranic Metal-Matrix Composites (QMMC)

Materials ◽  
2022 ◽  
Vol 15 (2) ◽  
pp. 659
Author(s):  
Sultan Althahban ◽  
Yosef Jazaa ◽  
Omar Bafakeeh ◽  
Abdullah S. Alomari ◽  
Hossam El-Din M. Sallam ◽  
...  
Keyword(s):  
Wear Behavior ◽  
Copper Matrix ◽  
Recrystallization Temperature ◽  
Matrix Composites ◽  
Atom Diffusion ◽  
Interfacial Bonding Strength ◽  
Preheating Temperature ◽  
The Difference ◽  
The Relationship ◽  
Manufacturing Parameters

The growing applications of iron/copper bimetallic composites in various industries are increasing. The relationship between the properties of these materials and manufacturing parameters should be well understood. This paper represents an experimental study to evaluate the effect of reinforcement (steel rod) preheating temperature on the mechanical properties (bond strength, microhardness, and wear resistance) of copper matrix composites (QMMC). In preparing the QMMC samples, the melted copper was poured on a steel rod that had been preheated to various temperatures, namely, room temperature, 600 °C, 800 °C, and 1200 °C. Properties of the QMMC (interface microstructure, interfacial bonding strength, microhardness, and wear) were investigated. The experimental results revealed that the best bond between the copper matrix and steel rod formed only in the composites prepared by preheating the steel rods with temperatures lower than the recrystallization temperature of steel (723 °C). This is because the oxide layer and shrinkage voids (due to the difference in shrinkage between the two metals) at the interface hinder atom diffusion and bond formation at higher temperatures. The microhardness test showed that preheating steel rod to 600 °C gives the highest value among all the samples. Furthermore, the QMMC’s wear behavior confirmed that the optimization of preheating temperature is 600 °C.

Correlation between Acoustic Emission and Internal Friction in Materials

2006 ◽  
Vol 13-14 ◽  
pp. 313-322 ◽  
Author(s):  
Alexei Vinogradov
Keyword(s):  
Acoustic Emission ◽  
Stress Relaxation ◽  
Internal Friction ◽  
Metal Matrix ◽  
Matrix Composites ◽  
Strain Accumulation ◽  
Strain Fracture ◽  
The Difference ◽  
The Relationship ◽  
Good Agreement

The relationship between acoustic emission and internal friction is investigated during cyclic deformation of copper single- and poly-crystals at intermediate amplitudes. Good agreement between these two phenomena has been demonstrated in all materials tested as long as the stress relaxation occurs uniformly within the sample whereas the difference between them becomes pronounced when strain/fracture localisation takes place. The similarity between acoustic emission and internal friction can be extended to materials deforming without appreciable plastic deformation, such as metal matrix composites where the main source of stress relaxation and strain accumulation is the particle breakage. The significance of the relation between internal friction and acoustic emission for understanding of fundamentals of AE is discussed.

Study on Effect of Different Preparation Process Parameters on Properties and Microstructure of SiO2/Cu Composites

2011 ◽  
Vol 117-119 ◽  
pp. 908-912
Author(s):  
Cui Hua Zheng ◽  
Ke Xing Song ◽  
Xiu Hua Guo ◽  
Yan Jun Zhou
Keyword(s):  
Volume Fraction ◽  
Wear Behavior ◽  
Phase Particle ◽  
Particle Volume Fraction ◽  
Hot Extrusion ◽  
Copper Matrix ◽  
Second Phase ◽  
Matrix Composites ◽  
Particle Volume ◽  
Comprehensive Properties

The SiO2 nanoparticles reinforced Cu-matrix composites were prepared by powder metallurgy technology．The influences of SiO2 volume fraction on the properties of hardness、conductivitity rate and wear behavior of Cu-matrix composites were studied. The results showed that conductivity rate was decreased with the increase of the SiO2 volume fraction；whereas the hardness was increased, then decreased and wear behavior was increased. Sintering an hour of performance was superior to the sintering half an hour.When SiO2 nanoparticle volume fraction was achieved 2.5%, comprehensive properties of SiO2/Cu composite were obviously increased.The microstructures revealed that the second phase particles precipitated dispersedly in copper matrix after hot extrusion. with the increase of the strengthen phase particle volume fraction, nanoparticles appeared together and gathered in grain boundary of copper matrix.

The influence of multi-pass friction stir processing on microstructure and sliding wear behavior of Cu/ZrO2 surface composite

2020 ◽  
Vol 111 (10) ◽  
pp. 814-825
Author(s):  
Amin Rabiezadeh ◽  
Saman Ghafaei
Keyword(s):  
Friction Coefficient ◽  
Base Metal ◽  
Friction Stir Processing ◽  
Wear Behavior ◽  
Composite Layer ◽  
Copper Matrix ◽  
Processing Parameters ◽  
Nano Particles ◽  
Matrix Composites ◽  
Friction Stir

Abstract In this study, copper/ZrO2 surface composites were produced using nano-particles via friction stir processing in order to enhance surface tribological properties. The present research aimed to generate copper matrix composites and analyze the effect of processing parameters on the evolving microstructure, microhardness, and wear-resistance behavior. It is worth noting that the processed composite layer had more homogeneity in the four-pass process. In comparison to the base metal and non-powder samples, it had higher mechanical characteristics. Based on the results, the highest recorded hardness, approximately 288 HV, was found in a four-pass state with powder. Remarkably, it showed a double peak compared to 80 HV in the base metal. The lowest friction coefficient of four-passes with the powder sample was about 0.47, which showed a significant efficiency in comparison to the friction coefficient of base metal that was about 0.81.

Friction and Wear Behavior of Nano-Al2O3 Particles Reinforced Copper Matrix Composites

2014 ◽  
Vol 137 (1) ◽  
Author(s):  
Guobin Li ◽  
Ningning Peng ◽  
Di Sun ◽  
Shude Sun
Keyword(s):  
Wear Resistance ◽  
Friction And Wear ◽  
Sliding Friction ◽  
Wear Behavior ◽  
Pure Copper ◽  
Copper Matrix ◽  
Powder Metallurgy Method ◽  
Matrix Composites ◽  
Al2o3 Composite ◽  
Average Size

A series of copper–Al2O3 composite materials (CACMs) with 0, 2, 4, and 6 wt.% of Al2O3 (average size about 80 nm) was fabricated by powder metallurgy method. The tribological behavior of CACMs was investigated by a ring-on-block sliding friction test. The results show that the hardness and the wear resistance of CACMs are improved by the addition of Al2O3. The CACMs with 0% Al2O3 (pure copper) shows the mechanism of adhesive wear and have very poor wear resistance. By comparing with the pure copper, the wear resistance of the CACMs with 2% and 6% Al2O3 is improved. When the proportion of Al2O3 is 4%, slightly abrasive wear occurs at the interface between two sliding surfaces, and the CACMs achieve higher wear resistance in comparison to that with 2% and 6% Al2O3.

scholarly journals Microstructural and sliding wear behavior of SiC-particle reinforced copper matrix composites fabricated by sintering and sinter-forging processes

2016 ◽  
Vol 5 (1) ◽  
pp. 5-12 ◽  
Author(s):  
Mohammadmehdi Shabani ◽  
Mohammad Hossein Paydar ◽  
Reza Zamiri ◽  
Maryam Goodarzi ◽  
Mohammad Mohsen Moshksar
Keyword(s):  
Sliding Wear ◽  
Wear Behavior ◽  
Copper Matrix ◽  
Matrix Composites ◽  
Copper Matrix Composites ◽  
Sinter Forging ◽  
Sic Particle

scholarly journals Effect of Electroless Coatings on the Mechanical Properties and Wear Behavior of Oriented Multiwall Carbon Nanotube-Reinforced Copper Matrix Composites

Nanomaterials ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 2982
Author(s):  
Zhong Zheng ◽  
Jishi Liu ◽  
Jiafeng Tao ◽  
Jing Li ◽  
Wenqian Zhang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Compressive Strength ◽  
Tribological Properties ◽  
Wear Behavior ◽  
Copper Matrix ◽  
Matrix Composites ◽  
Copper Matrix Composites ◽  
Electroless Coatings ◽  
Pure Cu

The effects of electroless coatings on the microstructure and composition of the interface between multi-walled carbon nanotubes (MWCNTs) and a Cu matrix and the mechanical properties and wear behavior of the resulting copper matrix composites were investigated. Ni and Cu coatings were electrolessly plated on MWCNTs and mixed subsequently with copper powder. Then copper matrix composites were prepared by sintering, hot extrusion and cold drawing processes. The results showed that MWCNTs were straight, long, uniformly dispersed and aligned in the composites. The Ni coating is more continuous, dense and complete than a Cu coating. The tensile strength, compressive strength, microhardness and tribological properties of Ni@MWCNTs/Cu composite along the drawing direction were enhanced most. The ultimate tensile strength and compressive strength were 381 MPa and 463 MPa, respectively. The friction coefficient and wear rate were reduced by 59% and 77%, respectively, compared with pure Cu samples. This study provides a new insight into the regulation of tribological properties of composites by their interface.

Sign in / Sign up

Export Citation Format

Share Document