Effect of wt% reinforcement on microstructure and mechanical properties of Al–2Mg base short steel fiber composites

Mandal, Durbadal; Dutta, B.; Panigrahi, S.C.

doi:10.1016/j.jmatprotec.2007.06.074

Cited by 22 publications

(9 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Low stirring speed cause agglomeration of fibers at some regions and uniform distribution of reinforcement throughout the matrix can be ach-ieved by increasing stirrer speed above 600 min À 1 . Similar results have been observed in other studies [15,[35][36][37][38] that high stirring speed promotes uniform dispersion of reinforcement in matrix. The variation of pouring temperature and stirring speed with hardness of composites showed that increase in pouring temperature increases the hardness of composites up to 750°C, Figure 7.…”

Section: Hardnesssupporting

confidence: 92%

Prediction of hardness of stir cast LM13 aluminum alloy ‐ copper coated short steel fiber reinforced composites using response surface methodology

Chelladurai¹,

Arthanari

2020

Materialwissenschaft Werkst

View full text Add to dashboard Cite

Copper coated steel fibers reinforced LM13 aluminum alloy composites have been prepared using stir casting process. Experiments have been designed using response surface methodology (RSM) by varying wt % of reinforcement (0–10), stirrer speed (350 min−1–800 min−1) and pouring temperature (700 °C–800 °C). Microstructure and hardness of composites have been investigated. Analysis of variance, significance test and confirmation tests have been performed and regressions model has been developed to predict the hardness of composites. Response surface plots reveal that hardness of composites increases with increasing wt % of reinforcement and stirrer speed. The optimum stir cast process parameters for obtaining higher hardness are found to be the wt % of reinforcement of 8.2, pouring temperature of 748 °C and stirrer speed of 708 min−1.

show abstract

Section: Hardnesssupporting

confidence: 92%

Prediction of hardness of stir cast LM13 aluminum alloy ‐ copper coated short steel fiber reinforced composites using response surface methodology

Chelladurai¹,

Arthanari

2020

Materialwissenschaft Werkst

View full text Add to dashboard Cite

show abstract

“…With the further addition of hard ceramic zirconium diboride particles hardness value increases significantly which may be due to increased dislocation density. zirconium diboride particles may have an excessive amount of dislocation density surrounding them because zirconium diboride particles and aluminum matrix have different coefficients of thermal expansion, which would increase hardness [13,33,36].…”

Section: Density and Hardness Analysismentioning

confidence: 99%

Synthesis and wear characterization of Al7075/molybdenum disulfide/zirconium diboride hybrid composites

Dubey,

Kumar,

Mohan

2024

Materialwissenschaft Werkst

View full text Add to dashboard Cite

The manuscript presents the synthesis and dry sliding wear performance of Al7075 alloy‐based composites. Five compositions namely Al7075 alloy, Al7075+3 vol % molybdenum disulfide, Al7075+3 vol % molybdenum disulfide+3 vol % zirconium diboride, Al7075+3 vol % molybdenum disulfide+6 vol % zirconium diboride and Al7075+3 vol % molybdenum disulfide+9 vol % zirconium diboride were stir cast and characterized for hardness, x‐ray diffraction, microstructure, and tribological properties. In‐situ formed zirconium diboride particles increase the hardness of Al7075 alloy whereas molybdenum disulfide shows the opposite trend due to its self‐lubricating nature. X‐ray diffraction analysis identifies subsequent phase particles in the matrix while microstructural images exhibit the dispersion and morphology of reinforcement particles. The wear tests and friction coefficient were analyzed with variations of sliding velocity, normal load, sliding distance, and compositions. Further, the obtained wear results were also correlated with microstructure and wear surface topography. Al7075+3 vol % molybdenum disulfide composite shows the lowest coefficient of friction because of its self‐lubricating nature. Al7075+3 vol % molybdenum disulfide+9 vol % zirconium diboride hybrid composite exhibits the lowest wear rate at high velocity as well as at high load and can be potentially used in manufacturing and tribological applications. Moreover, the use of this material may lead to the minimum requirement of external toxic lubricants that make it cost‐effective and environmentally sustainable.

show abstract

“…Further, it was compared with the base alloy, and the result revealed that hybrid composites produced better static structural properties. Mandala et al [20,21] examined Al-2 Mg alloy matrix with uncoated copper and nickelcoated steel fiber. Copper-coated steel fiber indicated good bonding strength and interface between the matrix and fillers.…”

Section: Introductionmentioning

confidence: 99%

Investigation on Mechanical and Wear Behaviors of LM6 Aluminium Alloy-Based Hybrid Metal Matrix Composites Using Stir Casting Process

Gnaneswaran

Hariharan²,

Chelladurai³

et al. 2022

Advances in Materials Science and Engineering

View full text Add to dashboard Cite

In this investigation, aluminium-silicon-based alloy (LM6) with the addition of (0, 2.5, 5, and 10%) copper-coated short steel fiber and 5% boron carbide (B4C) element-strengthened composites was fabricated by the stir casting method. Mechanical properties and tribological behaviors of LM6-based hybrid composites were investigated, and microstructures of different castings were examined by an image analyzer. The test was conducted at different loads (10, 20, 30, and 40 N) and different sliding spaces (500, 1000, 1500, and 2000 m), respectively. The results revealed that the sample loaded with 10% of reinforcement recorded the highest tensile strength of 231 MPa. On the other hand, the hardness value increased from 71 to 144 BHN, when 15% of reinforcement was added to the sample. It was also noted that 10% copper-coated steel fiber improved wear resistance up to 50% when compared to LM6. A field emission scanning electron microscope was employed to observe the morphology of the worn surfaces of composites at different sliding distances and load conditions. The hybrid composite revealed that the combination of both short steel fibers and reinforcement of ceramic particles enhanced the mechanical properties, obtaining superior wear resistance.

show abstract

Effect of wt% reinforcement on microstructure and mechanical properties of Al–2Mg base short steel fiber composites

Cited by 22 publications

References 21 publications

Prediction of hardness of stir cast LM13 aluminum alloy ‐ copper coated short steel fiber reinforced composites using response surface methodology

Prediction of hardness of stir cast LM13 aluminum alloy ‐ copper coated short steel fiber reinforced composites using response surface methodology

Synthesis and wear characterization of Al7075/molybdenum disulfide/zirconium diboride hybrid composites

Investigation on Mechanical and Wear Behaviors of LM6 Aluminium Alloy-Based Hybrid Metal Matrix Composites Using Stir Casting Process

Contact Info

Product

Resources

About