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Influence of Ceramic Particles on the Microstructure and Mechanical Properties of SAC305 Lead-Free Soldering Material

Manoj Kumar Pal G. Gergely D. Koncz-Horvath Z. Gacsi
Archives of Metallurgy and Materials | 2019 | vol. 64 | No 2 | 603-606 | DOI: 10.24425/amm.2019.127585
Keywords composite solder SiC particles microstructure Wettability microhardness
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Abstract

In this study, silicon carbide (SiC) reinforced lead-free solder (SAC305) was prepared by the powder metallurgy method. In this method SAC305 powder and SiC powder were milled, compressed and sintered to prepare composite solder. The composite solders were characterized by optical and scanning electron microscopy for the microstructural investigation and mechanical test. Addition of 1.5 wt. % and 2 wt. % ceramic reinforcement to the composite increased compressive strengths and microhardness up to 38% and 68% compared to those of the monolithic sample. In addition, the ceramic particles caused an up to 55% decrease in the wetting angle between the substrate and the composite solder and porosity was always increased with increase of SiC particles.

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Authors and Affiliations

Manoj Kumar Pal
G. Gergely
D. Koncz-Horvath
Z. Gacsi

The Influence of Graphite Addition on the Abrasive Wear of AlMg10 Alloy Matrix Composites Reinforced with SiC Particles

Z. Konopka M. Łągiewka
Archives of Foundry Engineering | 2014 | No 3 | DOI: 10.2478/afe-2014-0061
Keywords Composites abrasive wear Hard SiC particles Soft Cgr particles Hardness of composite materials
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Abstract

The presented work deals with the influence of the addition of soft graphite particles on the abrasive wear of composite reinforced with

hard SiC particles. The discussed hybrid composites were produced by stirring the liquid alloy and simultaneous adding the mixture of

particles. The adequately prepared suspension was gravity cast into a metal die. Both the composite castings obtained in this way and the

comparative castings produced of the pure matrix alloy were examined for the abrasive wear behaviour. Photomacrographs of the sliding

surfaces of the examined composites were taken, and also the hardness measurements were carried out. It was found that even a small

addition of Cgr particles influences positively the tribological properties of the examined composite materials, protecting the abraded

surface from the destructive action of silicon carbide particles. The work presents also the results of hardness measurements which confirm

that the composite material hardness increases with an increase in the volume fraction of hard reinforcing particles.

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Authors and Affiliations

Z. Konopka
M. Łągiewka

Structure of MMCs with SiC Particles after Gas-tungsten Arc Welding

E. Przełożyńska M. Mróz K.N. Braszczyńska-Malik
Archives of Foundry Engineering | 2015 | No 4 | DOI: 10.1515/afe-2015-0081
Keywords Composite Gas-tungsten arc welding Mg-Al-Mn alloy SiC particles Microstructure
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Abstract

The gas-tungsten arc (GTA) welding behaviors of a magnesium matrix composite reinforced with SiC particles were examined in terms of

microstructure characteristics and process efficiencies. This study focused on the effects of the GTAW process parameters (like welding

current in the range of 100/200 A) on the size of the fusion zone (FZ). The analyses revealed the strong influence of the GTA welding

process on the width and depth of the fusion zone and also on the refinement of the microstructure in the fusion zone. Additionally, the

results of dendrite arm size (DAS) measurements were presented.

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Authors and Affiliations

E. Przełożyńska
M. Mróz
K.N. Braszczyńska-Malik

Microstructure and Mechanical Properties of the EN AC-AlSi12CuNiMg Alloy and AlSi Composite Reinforced with SiC Particles

G.G. Sirata K. Wacławiak A.J. Dolata
Archives of Foundry Engineering | 2024 | vol. 24 | No 2 | 50-59 | DOI: 10.24425/afe.2024.149271
Keywords Metal matrix composites (MMCs) Mechanical properties SiC particle reinforcement Microstructure analysis Fractography
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Abstract

There is growing interest in developing more advanced materials, as conventional materials are unable to meet the demands of the automotive, aerospace, and military industries. To meet the needs of these sectors, the use of advanced materials with superior properties, such as metal matrix composites, is essential. This paper discusses the evaluation of microstructural and mechanical properties of conventional eutectic EN AC-AlSi12CuNiMg aluminum alloy (AlSi12) and advanced composite based on EN AC-AlSi12CuNiMg alloy matrix with 10 wt% SiC particle reinforcement (AlSi12/10SiCp). The microstructure of these materials was investigated with the help of metallographic techniques, specifically using a light microscope (LM) and a scanning electron microscope (SEM). The results of the microstructural analysis show that the SiC particles are uniformly distributed in the matrix. The results of the mechanical tests indicate that the tensile properties and hardness of the AlSi12/10SiCp composite are significantly higher than those of the unreinforced eutectic alloy. For AlSi12/10SiCp composite, the tensile strength is 21% higher, the yield strength is 16% higher, the modulus of elasticity is 20% higher, and the hardness is 11% higher than unreinforced matrix alloy. However, the unreinforced AlSi12 alloy has a percentage elongation that is 16% higher than the composite material. This shows that the AlSi12/10SiCp composite has a lower ductility than the unreinforced AlSi12 alloy. The tensile specimens of the tested composite broke apart in a brittle manner with no discernible neck development, in contrast to the matrix specimens, which broke apart in a ductile manner with very little discernible neck formation.
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Authors and Affiliations

G.G. Sirata
1
ORCID: ORCID
K. Wacławiak
1
ORCID: ORCID
A.J. Dolata
1
  1. Department of Materials Technologies, Faculty of Materials Engineering, Silesian University of Technology, Krasińskiego 8, 40-019 Katowice, Poland

Effect of Different Ceramic Reinforcements on Microstructure, Mechanical Properties and Tribological Behaviour of the Al6082 Alloy Produced by Stir Casting Process

Pushpraj Singh Raj Kumar Singh Anil Kumar Das
Archives of Metallurgy and Materials | 2023 | vol. 68 | No 4 | 1401-1410 | DOI: 10.24425/amm.2023.146206
Keywords Al6082 alloy Low-temperature impact properties SiC particles TiO2 particles Hybrid Composites High-temperature wear properties
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Abstract

In the present study, the mechanical properties and high-temperature sliding wear behaviour of the Al6082-SiC-TiO2 hybrid composite in different environmental conditions produced by the stir-casting process were investigated and distinguished with single-reinforced composites (Al6082-SiC and Al6082-TiO2) and matrix alloy. The microstructure of composites exhibited a reasonably uniform scatter of particles in the aluminium matrix with good bonding between the matrix-particle interfaces. The hybrid composite’s hardness and ultimate tensile strength showed higher hardness and tensile strength than matrix alloy and single-reinforced composites, whereas trends were reversed for the elongation. The impact test of the materials was conducted at different temperatures (room temperature, 0°C, –25°C, –50°C, and –75°C). The hybrid composite shows higher impact strength than the other materials, and impact strength decreases with temperature because ductility decreases with temperature. The fracture surfaces were examined to identify the fracture mechanism. The sliding wear test was conducted at different temperatures (room temperature, 100°C, 175°C, 250°C and 325°C) to distinguish the tribological behaviour of materials. The weight loss of the materials was increased with an increase in temperatures. The hybrid composite shows a lower weight loss than the other condition samples, irrespective of the temperatures. The wear surfaces were examined to predict the material removal mechanism.
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Authors and Affiliations

Pushpraj Singh
1
ORCID: ORCID
Raj Kumar Singh
2 3
ORCID: ORCID
Anil Kumar Das
1
ORCID: ORCID
  1. National Institute of Technology, Department of Mechanical Engineering, Ashok Rajpath, Mahendru, Patna, Bihar, 800005, India
  2. University Road, Department of Mechanical Engineering, Rewa Engineering College, Rewa, Madhya Pradesh, 486002, India
  3. Vindya Institute of Technology and Science, Mechanical Engineering, Amaudha Kalan, SATNA, MADHYA PRADESH, 485001, India

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