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Optimization of T-6 cycle and Characterization of Si3N4 Reinforced High Strength Aluminum Metal Matrix Composites

Ashish Kumar Ravindra Singh Rana Rajesh Purohit Anurag Namdev
Archives of Metallurgy and Materials | 2023 | vol. 68 | No 2 | 775-783 | DOI: 10.24425/amm.2023.142461
Keywords stir casting microstructure mechanical properties optimization fractography
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Abstract

In this research, AA7068/Si3N4 composites were fabricated through stir casting with the attachment of ultrasonic treatment. The quenching medium and aging duration significantly influenced the hardness of Al alloy samples. Peak hardness was achieved after 12 h of artificial aging at the temperature of 140°C. The addition of nano Si3N4 significantly refined the microstructure of unreinforced AA7068. The dispersion of intermetallic compounds (MgZn2) and grain boundary discontinuation were noticed after the T-6 heat treatment. Ultimate tensile strength, yield strength, and hardness were improved by 70.95%, 76.19%, and 44.33%, respectively, with the addition of 1.5 weight % Si3N4 compared to as-cast alloy due to the combined effect of heat treatment, hall-Petch, Orowan, thermal miss match, load-bearing strengthening mechanisms and uniform dispersion of reinforcement. A reduction in percentage elongation was noticed due to composites’ brittle nature by the effect of ceramic Si3N4 particles’ inclusion. The fracture surfaces reveal ductile failure for alloy and mixed-mode failure in the case of composites.
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Authors and Affiliations

Ashish Kumar
1
ORCID: ORCID
Ravindra Singh Rana
1
Rajesh Purohit
1
Anurag Namdev
1
  1. Maulana Azad National Institute of Technology, Department of Mechanical Engineering, Bhopa l, Madhya Pradesh, India

Influence of Acoustic Emission Signals and Damage Analysis During the Tensile Test on Al8011 Hybrid Composites by Stir Casting Method

C.R. Kannan S. Suresh M. Navaneetha Krishnan
Archives of Metallurgy and Materials | 2023 | vol. 68 | No 1 | 223-235 | DOI: 10.24425/amm.2023.141498
Keywords Al8011 Stir Casting Acoustic Emission (AE) tensile corrosion
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Abstract

Metal network compounds have primary properties. The use of lightweight and low vitality is a testament to the growing interest in the automotive industry. Aluminum alloys, due to their advanced physical, mechanical and tribological properties, have become a highly emerging material for a variety of industrial applications and the importance of efficient material selection is explained. In this paper, an Al8011 hybrid metal matrix composite is developed through the stir casting process. The different weight proportions of B 4C (3%, 6%, 9% & 12%) and fixed proportions of 2% MoS2 have been used. Composite developed are subjected to mechanical properties evaluation and seawater corrosion studies following standard procedures. To study the porosity of the composite samples, theoretical density and actual density are calculated. An acoustic emission system-assisted tensile test is carried out to report the strength of the composite. From this experimental method, adding reinforcement can increase the tensile strength and hardness of the composites. Under sea water, the increase in reinforcement found an increase in corrosion resistance. Fractured surfaces were perused using SEM and EDS analysis.
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Authors and Affiliations

C.R. Kannan
1
S. Suresh
2
M. Navaneetha Krishnan
3
  1. Universal College of Engineering and Technology, Department of Mechanical Engineering, Vallioor, Tamilnadu, India
  2. University College of Engineering, Nagercoil, Department of Mechanical Engineering Tamilnadu, India
  3. Amrita College of Engineering and Technology, Department of Mechanical Engineering, Amritagiri, Erachakulam (Po), Nagercoil, Tamil Nadu, India

Investigation of Mechanical and Corrosion Properties of Al 7075/Garnet Metal Matrix Composites by Two-stage Stir Casting Process

M. Sambathkumar P. Navaneethakrishnan K.S.K. Sasikumar R. Gukendran K. Ponappa
Archives of Metallurgy and Materials | 2021 | vol. 66 | No 4 | 1123-1129 | DOI: 10.24425/amm.2021.136432
Keywords Al 7075 garnet Two-Stage Stir Casting Mechanical Properties corrosion properties
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Abstract

The impact of Garnet addition into the AL7075 Aluminium matrix on the physical, mechanical and corrosion properties are studied in this research paper. Al 7075/garnet composites are fabricated by using two-stage stir casting method in different (0, 5, 10, 15) volume percentages. Photomicrograph of prepared samples revealed the uniform distribution of garnet reinforcement into the base matrix. The corrosion rate is calculated by potentiodynamic polarization method. The actual density is increased by around 1.2% for Al 7075 / garnet (15%) composite as compared to base alloy. Micro hardness of Al 7075 / garnet (15%) composite is raised by around 47 (34%) compare to as cast base matrix. Al7075 / garnet (15%) composite tensile strength stood at 252 Mpa, which is 40% greater than the base alloy. Al 7075 / 15% garnet composites reduce around 97% of corrosion rate than the base matrix. Alloy elements influenced the corrosion than Garnet reinforcement.
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Bibliography

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Authors and Affiliations

M. Sambathkumar
1
ORCID: ORCID
P. Navaneethakrishnan
1
ORCID: ORCID
K.S.K. Sasikumar
1
ORCID: ORCID
R. Gukendran
1
ORCID: ORCID
K. Ponappa
2
ORCID: ORCID
  1. Kongu Engineering College, Department of Mechanical Engineering, Erode, Tamilnadu, India
  2. Indian Institute of Information Technology Design and Manufacturing Jabalpur, Department of Mechanical Engineering, Jabalpur, India

Synthesis and characterization of AA5083 and AA2024 reinforced with SiO2 particles

R. Raja S. Jannet M.A. Thampy
Bulletin of the Polish Academy of Sciences Technical Sciences | 2018 | 66 | No 2 (Special Section on Nano- and Micromechanics) | 127-132
Keywords in situ reaction SEM wear rate stir casting impact strength tensile strength EDX
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Authors and Affiliations

R. Raja
S. Jannet
M.A. Thampy

Fabrication of Aluminum Matrix Composite Reinforced with Al 0.5CoCrCuFeNi High-Entropy Alloy Particles

Min Sang Kim Han Sol Son Gyeong Seok Joo Young Do Kim Hyun Joo Choi Se Hoon Kim
Archives of Metallurgy and Materials | 2022 | vol. 67 | No 4 | 1543-1546 | DOI: 10.24425/amm.2022.141091
Keywords aluminum matrix composite high entropy alloys reinforcement powder-in-tube stir casting
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Abstract

The aluminum composite with dispersed high entropy alloy were developed by stir casting involving the powder-in-tube method. First, Al0.5CoCrCuFeNi high entropy alloy (HEA) powder was made by mechanical alloying, and the powder was extruded in a tube-type aluminum container to form HEA precursor. The extruded HEA precursor was then dispersed in the aluminum matrix via stir casting. As a result, Fe-Cr-Ni based high-entropy phases was uniformly formed in the aluminum matrix, revealing ~158, 166, 235% enhancement of tensile strength by incorporating 1, 3, and 5 wt% HEA particles, respectively.
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Authors and Affiliations

Min Sang Kim
1 2
ORCID: ORCID
Han Sol Son
3
ORCID: ORCID
Gyeong Seok Joo
2
ORCID: ORCID
Young Do Kim
1
ORCID: ORCID
Hyun Joo Choi
3
ORCID: ORCID
Se Hoon Kim
2
ORCID: ORCID
  1. Hanyang University, Department of Materials Science & Engineering, Seoul, Republic of Korea
  2. Korea Automotive Technology Institute, Metallic Material R&D Center, Cheonan-si, Republic of Korea
  3. Kookmin University, School of Materials Science and Engineering, Seoul, Republic of Korea

Investigations on Tribological Behaviour of Titanium Dioxide Particles Filled Al-0.6Fe-0.5Si Alloy Composite using TOPSIS Approach

S. Kailainathan M. Ezhilan S.V. Alagarsamy C. Chanakyan
Archives of Metallurgy and Materials | 2023 | vol. 68 | No 4 | 1429-1438 | DOI: 10.24425/amm.2023.146209
Keywords Al-Fe-Si alloy TiO2 stir casting Hardness Tribological behaviour TOPSIS
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Abstract

Aluminium metal matrix composites (AMMCs) playing a prominent part in the aerospace and automotive sectors owing to their superior mechanical and tribological properties. Hence, the aim of this work is to investigate the effect of titanium dioxide (10 wt.% TiO2) particles addition on hardness and tribological behaviour of Al-0.6Fe-0.5Si alloy (AA8011) composite manufactured by stir casting method. The surface morphology of developed composite clearly shows the inclusion of TiO2 particles evenly distributed within the matrix alloy. Hardness of the composite was measured using Vickers micro hardness tester and the maximum hardness was obtained at 95.6 Hv. A pin-on-disc tribometer was used to carried the wear test under dry sliding conditions. The influence of wear control parameters such as applied load (L), sliding speed (S) and sliding distance (D) were taken as the input parameters and the output responses considered as the specific wear rate (SWR) and co-efficient of friction (COF). The experimental results were analyzed using Technique for Order Preference by Similarity to Ideal Preferred Solution (TOPSIS). Based on the TOPSIS approach, the less SWR and COF achieved at the optimal parametric combination were found to be L = 30 N, S = 1 m/s and D = 2000 m. ANOVA results revealed that applied load (76.01%) has the primary significant factor on SWR and COF, followed by sliding speed (20.71%) and sliding distance (3.12%) respectively. Worn surface morphology was studied using SEM image of confirmation experiment specimen to understand the wear mechanism.
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Authors and Affiliations

S. Kailainathan
1
ORCID: ORCID
M. Ezhilan
1
ORCID: ORCID
S.V. Alagarsamy
2
ORCID: ORCID
C. Chanakyan
3
ORCID: ORCID
  1. Rohini College of Engineering and Technology, Department of Mechanical Engineering, Kanyakumari-629 401, Tamil Nadu, India
  2. Mahath Amma Institute of Engineering and Technology, Department of Mechanical Engineering, Pudukkottai-622 101, Tamil Nadu, India
  3. RVS College of Engineering and Technology, Department of Mechanical Engineering, Coimbatore-641 402, Tamil Nadu, India

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