Microstructures and mechanical properties of A356-SiCp/A356 cladding composite materials prepared by vacuum Solid–Liquid casting

Luo, Yajun; Zhang, Zhenlin; Li, Zhou; Zhang, Weidong; Deng, Xiaoxiang; Huang, Yu; Chen, Yi; Wu, Zhenggang

doi:10.1016/j.jmrt.2022.07.002

Cited by 5 publications

(3 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Each test was performed three times, and the average results were reported. The sliding velocity of the test sample can be determined by following the equation given below (10) .…”

Section: Wear Testmentioning

confidence: 99%

Feasibility Study on Tribology and Surface Morphology Characterization of Hybrid Composites

Jayaprakash¹,

Niranjan²,

Vinod³

2022

IJST

View full text Add to dashboard Cite

Objectives: To investigate the tribological behaviour of aluminium hybrid composites. Aluminium alloy (LM 25) is utilised in the aerospace and defence industries. Its wear properties are further improved to increase the lifespan of the components used in these sectors. Due to their ability to resist wear, graphite and silicon carbide are often used to manufacture machine tools. The objective is to identify the wear parameters of the LM 25 alloy. It was examined after stir-cased and strengthened with silicon carbide and graphite in various weight ratios. Methods: The dry sliding wear behaviour for aluminium alloys containing 2, 4, and 6 wt.% silicon carbide and a fixed 2 wt.% graphite is investigated using stir-casting composites. These process parameters included loads of 15, 30, and 45 N, sliding speeds of 0.55, 1.10, and 1.65 m/s, and sliding distances of 333, 666, and 999 m. Findings: According to the test results, the overall wear loss of SiC-reinforced hybrid composites was less compared to both unreinforced alloys and Al/Gr composites. The tribological behaviour of a composite consisting of 4% SiC and 2% Gr was significantly improved compared to the base alloy. Novelty: The novelty of this study is to induce a brake disc made of an Al alloy with wear-resistant SiC/Gr particle-reinforced aluminium composites committed to its surface. The role of tribology in determining material behaviour is shown to be important in controlling material removal.

show abstract

“…Each test was performed three times, and the average results were reported. The sliding velocity of the test sample can be determined by following the equation given below (10) .…”

Section: Wear Testmentioning

confidence: 99%

Feasibility Study on Tribology and Surface Morphology Characterization of Hybrid Composites

Jayaprakash¹,

Niranjan²,

Vinod³

2022

IJST

View full text Add to dashboard Cite

show abstract

“…To overcome this situation, several enhanced casting processes have been developed, such as high vacuum die-casting, semi-solid die-casting (rheo-HPDC), etc. [4,5]. In the case of semi-solid die-casting, the higher viscosity promotes a laminar flow of the slurry in the sleeve and cavity, characterized by a reduced occurrence of issues like oxidation [2], shrinkage [6], and air entrapment [7].…”

Section: Introductionmentioning

confidence: 99%

A Comparative Study on Microstructure, Segregation, and Mechanical Properties of Al-Si-Mg Alloy Parts Processed by GISS-HPDC and SEED-HPDC

Gu,

Xiang,

et al. 2023

Materials

View full text Add to dashboard Cite

There are multiple routes to prepare semi-solid slurries with a globular microstructure for semi-solid forming. The variations in the microstructure of semi-solid slurries prepared using different routes may lead to significant differences in the flow behavior and mechanical properties of rheo-diecasting parts. Therefore, it is crucial to have a comprehensive understanding of the microstructure evolution associated with different slurry preparation routes and their resulting effects. In this study, the gas-induced semi-solid process (GISS) and the swirl enthalpy equilibrium device (SEED) routes were employed to prepare semi-solid Al-Si-Mg slurries for their simplicity and productivity in potential industrial applications. The prepared slurries were then injected into the shoot sleeves of a high-pressure die casting (HPDC) machine to produce tensile test bars. Subsequently, the bars underwent T6 treatment to enhance their mechanical properties. The microstructure, segregation, and mechanical properties of the samples were investigated and compared with those of conventional HPDC. The results indicated that the GISS and SEED can produce semi-solid slurries containing a spherical α-Al primary phase, as opposed to the dendritic structure commonly found in conventional castings. The liquid fraction had a significant effect on the flow behavior, resulting in variations in liquid segregation and mechanical properties. It was observed that a higher solid fraction (>75%) had a suppressing effect on surface liquid segregation. In addition, the tendency for liquid segregation gradually increased along the filling direction due to the special flow behavior of the semi-solid slurry with a low solid fraction. Furthermore, under the same die-casting process parameters, the conventional HPDC samples exhibit higher yield stress (139 ± 3 MPa) compared to SEED-HPDC and GISS-HPDC samples, which may be attributed to the small grain size and the distribution of eutectic phases. After undergoing the T6 treatment, both SEED-HPDC and GISS-HPDC samples showed a significant improvement in yield and tensile strength. These improvements are a result of solution and precipitation strengthening effects as well as the spheroidization of the eutectic Si phase. Moreover, the heat-treated SEED-HPDC samples demonstrate higher ultimate strength (336 ± 5 MPa) and elongation (13.7 ± 0.3%) in comparison to the GISS-HPDC samples (307 ± 4 MPa, 8.8 ± 0.2%) after heat treatment, mainly due to their low porosity density. These findings suggest that both GISS-HPDC and SEED-HPDC processes can be utilized to produce parts with favorable mechanical properties by implementing appropriate heat treatments. However, further investigation is required to control the porosities of GISS-HPDC samples during heat treatment.

show abstract

“…Therefore, domestic and foreign scholars use composite technology to composite materials with different properties to obtain composite materials with excellent properties. The main research in this paper is metal matrix ceramic composites, which is one of the more popular researches [1][2]. Cermet is a heterogeneous composite material that composed of metal and ceramic phases, which the latter volume content is about 15% to 85% of the cermet material.…”

Section: Introductionmentioning

confidence: 99%

Manufacture and Performance of the Al<sub>2</sub>O<sub>3</sub>/Al Compound Powder and Cermet with the Powder Metallurgy

Qin¹,

Wang

Wen

et al. 2023

MSF

View full text Add to dashboard Cite

On the one hand, cermet has the advantages of metal materials, and on the other hand, it maintains the excellent properties of ceramic materials, and is a very important new engineering material. In this paper, the alumina/aluminum cermet material composite powder was prepared by ball milling, and its densification properties were characterized and studied to provide reference for the preparation of high-performance cermet materials. When the ball milling time is more than 6h, the distribution of alumina particles around the aluminum powder is relatively uniform. The research shows that: with the extension of the ball milling time, the number of pinning of Al2O3 particles on the surface of the Al ball first increases and then decreases; The trend of decreasing; with the increase of ball-to-powder ratio, the distribution of Al2O3 particles on the surface of Al balls is more uniform. Considering its cost-effectiveness, it is more suitable to prepare pinned alumina/aluminum-ceramic composite powder under the conditions of ball milling speed of 360r/min, ball-to-material ratio of 2:1 and ball milling time of 12h. When the Al content gradually decreased, the density and hardness of the cermet material also decreased gradually. When the Al content gradually decreased, the density and hardness of the cermet material also decreased gradually. When Al accounts for 75% in the sample, the microstructure is dense and the hardness is higher. When the molding pressure is 20MPa, the unevenness of the surface of the material is greatly relieved, relatively flat, and the densification effect is better. When the sintering temperature is 800°C, the fired sample is very dense, and the particles have relatively high bonding strength, but a small amount of aluminum is precipitated on the surface of the sample, forming a silver-white spherical substance.

show abstract

Microstructures and mechanical properties of A356-SiCp/A356 cladding composite materials prepared by vacuum Solid–Liquid casting

Cited by 5 publications

References 36 publications

Feasibility Study on Tribology and Surface Morphology Characterization of Hybrid Composites

Feasibility Study on Tribology and Surface Morphology Characterization of Hybrid Composites

A Comparative Study on Microstructure, Segregation, and Mechanical Properties of Al-Si-Mg Alloy Parts Processed by GISS-HPDC and SEED-HPDC

Manufacture and Performance of the Al<sub>2</sub>O<sub>3</sub>/Al Compound Powder and Cermet with the Powder Metallurgy

Contact Info

Product

Resources

About