scholarly journals Optimization of Machining Parameters in Drilling of Aluminum Matrix Composites (LM6/Fly Ash) utilizing Taguchi Technique

2019 ◽  
Vol 9 (2) ◽  
pp. 1229-1232 ◽  
Keyword(s):  
Fly Ash ◽  
Thrust Force ◽  
Matrix Material ◽  
Aluminum Matrix ◽  
Casting Process ◽  
Stir Casting ◽  
Aluminum Matrix Composites ◽  
Feed Speed ◽  
Machining Parameters ◽  
The Impact

The present study revolves around the possibility of setting machining parameters in the drilling of composites of aluminum matrix (LM6/Fly ash) using the signal to noise ratio analysis. The aim of this work is to consider, the impact of input parameters, feed, speed, drill and percentage of composite material reinforcement on thrust force during AMCs drilling. AMCs were manufactured by the stir casting process with LM6 aluminium alloy as matrix material and fly ash as reinforcement material. Investigations were directed on a CNC vertical machining center for estimating thrust force. The Taguchi strategy for trial configuration is a generally admitted system employed for delivering great items requiring less effort. In the same way, L27 orthogonal array is employed for the analyses. The response table, graphs and variance analyzes are used to demonstrate the potential environment and the effects of machining parameters. It is evident that there is a tremendous improvement in the drilling procedure by using this methodology.

Influence of Ti and Zn on Particle Incorporation of AlB2, B and B4C Particles in Aluminum Using the Stir Casting Process

2017 ◽  
Vol 742 ◽  
pp. 173-180
Author(s):  
Steven Plötz ◽  
Andreas Lohmüller ◽  
Robert F. Singer
Keyword(s):  
Liquid Aluminum ◽  
Aluminum Matrix ◽  
Casting Process ◽  
Stir Casting ◽  
Aluminum Matrix Composites ◽  
Matrix Composites ◽  
Gas Entrapment ◽  
Particle Incorporation ◽  
Particle Feeding ◽  
Partial Vacuum

The outstanding performance of many aluminum matrix composites (AMCs) regarding specific stiffness makes AMCs attractive materials for lightweight construction. Low density boride compounds promise both an increase in stiffness and decrease in composite density. Therefore for this study AlB2, B and B4C were chosen for composite manufacturing. The composites were fabricated with the stir casting process. To avoid gas entrapment during mixing and ensure nonporous composites, partial vacuum was adapted during particle feeding and stirring. Poor wettability of used particle material in contact with liquid aluminum hindered particle incorporation, but alloying elements such as titanium were shown to affect wettability and particle incorporation for B4C. Zn had no influence on wettability or reactivity and did not improve particle incorporation. In contrast to Zn, Ti improved adhesion and wettability, but particle incorporation was improved exclusively for B4C. Besides alloying Ti, the use of high-shear force mixers improved particle incorporation enabling uniform particle distribution. AMCs with up to 12 vol.% of B4C particles were produced via stir casting without alloying Ti.

scholarly journals Tribological Behavior of AA7050-ZrSiO4 Composites Synthesized by Stir Casting Technique

2019 ◽  
Vol 23 (1) ◽  
pp. 198-201 ◽  
Author(s):  
S. Sakthivelu ◽  
M. Meignanamoorthy ◽  
M. Ravichandran ◽  
P. P. Sethusundaram
Keyword(s):  
Tribological Behavior ◽  
Wear Behavior ◽  
Matrix Material ◽  
Aluminum Matrix ◽  
Stir Casting ◽  
Aluminum Matrix Composites ◽  
Wear Loss ◽  
Matrix Composites ◽  
Casting Technique ◽  
Pin On Disc

AbstractThis research made an attempt to synthesize aluminum metal matrix composites through stir casting technique. The matrix material chosen in this study was AA7050 and the reinforcement material was ZrSiO4. The composites AA7050, AA7050-10%ZrSiO4, and AA7050-15%ZrSiO4were used. The wear behavior of the aluminum matrix composites was investigated by using pin-on-disc tribometer. The advanced material has substantial development in tribological behavior when the reinforcement percentage is increased. From the experimental results, it was confirmed that sliding distance of 1200 m, applied load of 3 N and sliding speed of 2 m/s result in minimum wear loss and coefficient of friction, while adding 10%ZrSiO4to the AA7050.

Damage modeling and critical damage evaluation of AA2014 cast alloy embedded with fly ash composite under upsetting

2019 ◽  
Vol 233 (15) ◽  
pp. 5227-5236 ◽  
Author(s):  
Ch HariKrishna ◽  
MJ Davidson
Keyword(s):  
Fly Ash ◽  
Ductile Fracture ◽  
Cast Alloy ◽  
Matrix Material ◽  
Casting Process ◽  
Stir Casting ◽  
Damage Evaluation ◽  
Primary Metal ◽  
Cast Alloys ◽  
Critical Damage

Abstract: Upsetting is one of the primary metal forming techniques and needs to be applied to reduce the cross section of the billets for further processing. Ductile fracture in metal upsetting process is an issue and depends on the material used and processing conditions. The current work focus is on the critical damage evaluation of AA2014 cast alloy embedded with fly ash composite. AA2014 alloy was heated to a pouring temperature of 750 ℃ and fly ash of 3% and 6% were added separately with AA2014 matrix material to prepare three sets of cast alloys namely pure AA2014, AA2014 + 3% fly ash, and AA2014 + 6% fly ash. After manufacturing three sets of rods from stir casting process, three sets of billets were machined to a height and diameter of 24 mm. Three sets of billets were compressed between rigid dies to different levels of strain until the initiation of fracture. Ductile fracture criterions were modeled to evaluate the critical damage value and fracture loci were constructed for different compositions.

Fabrication and Microstructure Study of Aluminum Matrix Composites Reinforced with SiC and B4C Particulates

2017 ◽  
Vol 16 ◽  
pp. 26-29 ◽  
Author(s):  
Gurpreet Singh Saini ◽  
Sanjeev Goyal
Keyword(s):  
Hybrid Composites ◽  
Aluminum Matrix ◽  
Base Material ◽  
Casting Process ◽  
Stir Casting ◽  
Aluminum Matrix Composites ◽  
Matrix Composites ◽  
The Matrix ◽  
Sic Composites ◽  
Xrd Patterns

In the present paper aluminum matrix composites were fabricated using base material AA6082-T6. SiC and B4C particulates were used as reinforcement to obtain hybrid and non-hybrid composites through the conventional stir casting process. AA6082-T6/SiC composites with 5, 10, 15 and 20 wt % of SiC; AA6082-T6/B4C composites with 5, 10, 15 and 20 wt % of B4C and AA6082-T6/(SiC+B4C) hybrid composites with 5, 10, 15 and 20 wt % of (SiC+B4C) taking equal fraction of SiC and B4C were made and the microstructure study was carried out. X-Ray diffraction (XRD) patterns revels the presence of reinforcement within the matrix along with some other compounds. The microstructure of the fabricated composites was examined with the help of Scanning electron microscope (SEM) and the micrographs revealed that the dispersion of reinforced particles was reasonably uniform at all weight percentages.

scholarly journals ALFA: Fly Ash - Aluminium Metal Matrix Composites for Light Weight Material

2019 ◽  
Vol 8 (3) ◽  
pp. 8897-8898
Keyword(s):  
Fly Ash ◽  
Impact Energy ◽  
Aluminum Matrix ◽  
Stir Casting ◽  
Ash Content ◽  
Phase Identification ◽  
Light Weight ◽  
Matrix Composites ◽  
The Impact ◽  
Aluminium Metal

In the present work, properties such as wear rate, hardness, impact energy and microstructure of the Aluminum-fly ash composite synthesized by stir casting were investigated by varying the fly ash in the range of 5 and 15 by weight %. The phase identification and structural characterization was carried out on ALFA composites using SEM and EDAX tests and it was found that there was a uniform distribution of fly ash particles in the aluminum matrix phase. The hardness and the wear resistance increased and the impact energy decreased as the fly ash content in the ALFA composite was increased and it can be used as a light weight material for many engineering and non-engineering applications

scholarly journals Synthesis of Al-Fly Ash Composites by Modified Two Step Stir Casting Method

2012 ◽  
Vol 488-489 ◽  
pp. 775-781 ◽  
Author(s):  
P. Shanmughasundaram ◽  
R. Subramanian ◽  
G. Prabhu
Keyword(s):  
Mechanical Properties ◽  
Fly Ash ◽  
Matrix Material ◽  
Casting Process ◽  
Stir Casting ◽  
Casting Method ◽  
Industrial Preparation ◽  
The Matrix ◽  
Method Analysis ◽  
Properties Of Composites

In the stir casting process, homogeneous dispersion of reinforcing particles within the matrix material is one such major problem, which influences on the properties of composites. In this research, an attempt has been made to study the influence of fly ash wt.% (10 ,15 and 20), ratio of the impeller outer dia to crucible inner dia (0.7,0.5 and 0.3) and processing method (liquid state stirring, two step stirring and modified two step stirring) on the mechanical properties and the distribution of fly ash particles in the Al matrix.Optimum parameters were identified for attaining the maximum mechanical properties such as hardness and tensile strength of composites by the application of Taguchi method, Analysis of Variance (ANOVA) and the results were validated by confirmation test.The present work could provide a guide for the industrial preparation of composites.

scholarly journals Mechanical Properties, Tribology and Electrochemical Studies of Al/Fly Ash/Eggshell Aluminium Matrix Composite

2021 ◽  
Vol 12 (4) ◽  
pp. 4900-4919
Keyword(s):  
Mechanical Properties ◽  
Fly Ash ◽  
Aluminum Matrix ◽  
Weight Fraction ◽  
Xrd Analysis ◽  
Stir Casting ◽  
Aluminum Matrix Composites ◽  
Matrix Composites ◽  
Cast Aluminum ◽  
Aluminium Matrix Composite

This work was carried out to investigate the effect of carbonized eggshells (CES) and fly ash on the microstructure, mechanical properties, wear, and corrosion characteristics of Al-Si12. The weight fraction (wt.%) of the CES particles was kept constant at 2.5 wt.%, while that of fly ash was varied at 2.5 wt.%, 5.0 wt.%, 7.5 wt.%, and 10.0 wt.%. The selected fabrication route was stir casting. The x-ray diffraction (XRD) analysis of the cast aluminum matrix composites (AMCs) revealed the presence of phases including α-aluminum, SiO2, and Si with the formation of the intermetallic CuAl2 phase. The microhardness of the cast samples increased with increasing weight fraction of the reinforcements up to the 7.5 wt.% fly ash sample. The tensile strength and compressive strength were highest for the 2.5 wt.%/CES 2.5 wt.%. Tribology studies showed that the lowest wear rate of 4.91 × 10-5 mm3/Nmm was obtained for the 2.5 wt.% fly ash sample, while the corrosion studies showed that the corrosion rate of 2.70 × 10-5 g/hr was lowest for the 2.5 wt.% fly ash as well.

scholarly journals A Comparative Study of the Impact of the Stirrer Design in the Stir Casting Route to Produce Metal Matrix Composites

2021 ◽  
Vol 2021 ◽  
pp. 1-15
Author(s):  
Farooq Muhammad ◽  
Shawnam Jalal
Keyword(s):  
Mechanical Characteristics ◽  
Aluminum Matrix ◽  
Stir Casting ◽  
Aluminum Matrix Composites ◽  
Matrix Composites ◽  
Alloy Matrix ◽  
Vast Number ◽  
Study Results ◽  
Numerical Software ◽  
The Impact

Aluminum matrix composites are widely utilized in many sectors, and their popularity is rising due to their ability to combine high mechanical characteristics with their lightweight. Stir casting is typically achieved in a closed crucible with an invisible flow pattern to produce aluminum alloy matrix composites. Researchers employed a hybrid method to optimize the stir casting parameters. The vast number of parameters and their overlap affects the uniform distribution of reinforcement particles. Investigators on their way to the best technique have gotten promising outcomes in their specific situations, but they still need more work to be able to generalize their findings to optimize the stirrer design to get efficient mixing. Due to an experimental technique alone is insufficient for optimizing stir casting parameters, researchers combined theoretical, experimental, statistical, and numerical simulation approaches to get more precise and reliable findings. The design of the experiment (DOE), particularly Taguchi, and other standard statistics such as ANOVA and regression were discovered to be the most often utilized statistical contributions. Recent attempts to simulate stir casting have begun to match the experimental or analog model data by developed numerical software and analytical analysis. Finally, previous study results and suggestions were collected and compared, arranged, revised, and presented simply about the proper stirrer design, stages, and position in that to make the paper unique.

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