Fabrication and Characterization of Al6061-Nano Al₂O₃ Composites by Ultrasonic Assisted Stir Casting followed by Heat Treatment and Hot Forging

• Autorzy: Purohit Rajesh , Qureshi M.M.U. , Kumar Ashish , Mishra Abhishek , Rana R.S.

Identyfikatory

DOI

10.24425/amm.2023.142463

• Języki publikacji: EN

Abstrakty

EN

The present work comprises the development of Al6061/nano Al₂O₃ composites with 0 to 4 weight percent in steps of 0.5 wt. % of nano alumina particles by using ultrasonic assisted stir casting. Casted samples were subjected to heat treatment and hot forging. Further forged and heat-treated gear blanks of nano Al₂O₃ (0 to 3.0 weight %) reinforced nanocomposites were machined to make spur gears for the wear test. The results have shown that nano Al₂O₃ reinforcement in the Al6061 matrix with heat treatment and forging improves the hardness and compressive strength up to 3.5 wt. %, after that, it starts decreasing because of the agglomeration of nano alumina particles. SEM results reveal grain refinement of the pure alloy after reinforcement. Removal of porosity and voids observed after forging operation. Wear resistance increasing with incorporation of Al₂O₃ nanoparticles in base alloy, reinforcement wt. %, precipitation hardening and hot forging also improves wear resistance and mechanical properties. These composites have widespread applications in gear, brake discs, crankshaft, clutch plates, pistons, and other components of automobiles and aircraft structures.

Słowa kluczowe

EN

Al6061 alloy; Al6061-Al2O3 nanocomposites; XRD analysis; FESEM; mechanical properties; automotive gears

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2023
• Tom: Vol. 68, iss. 2
• Strony: 791--798
• Opis fizyczny: Bibliogr. 24 poz., fot., rys., tab.

Twórcy

autor

Purohit Rajesh

• Mechanical Engineering Department, MANIT, Bhopal, India-462003

autor

Qureshi M.M.U.

• Mechanical Engineering Department, MANIT, Bhopal, India-462003

autor

Kumar Ashish

• Mechanical Engineering Department, MANIT, Bhopal, India-462003

• https://orcid.org/0000-0002-9993-6292

autor

Mishra Abhishek

• Mechanical Engineering Department, MANIT, Bhopal, India-462003

autor

Rana R.S.

• Mechanical Engineering Department, MANIT, Bhopal, India-462003

Bibliografia

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