Investigation of the Quenching Properties of Selected Media on 6061 Aluminum Alloy
- 1 Department of Mechanical Engineering Federal University of Technology, Minna
- 2 Waziri Umaru Polytechnic,Birnin Kebbi
- 3 Department of Mechanical Engineering Federal University of Technology, Minna
Abstract
Specimens of 6061 Aluminum alloy were prepared and quenched in water, sheanut oil and palm oil at temperature of 400℃, 450℃ and 530℃ to determine the effect of variation in temperature and quenching media on some mechanical properties and the microstructure of the alloy. Standard specimens from the rapidly quenched alloys were subject to various tests to determine their ultimate tensile strength, hardness and impact strength. The results showed that the specimen heat-treated to 530℃ and quenched in water has the highest tensile strength of 109 N/mm 2 and yield strength of 70.89 N/mm 2 . The specimen heated at 530℃ and quenched in water gave the highest value of 35.50 in hardness (HRC). The toughness property of the alloy, as indicated by Charpy impact values, is better at 530℃ for specimen quenched in sheanut oil and least impact strength is observed in specimen quenched in water at 400℃.
- Rajan T. V. Sharma, C. P., Ashok Sharma, 1988, Heat treatment Principles Techniques, Rajkarnal Electric Press. India. Page 142-149.
- Davis J. R., 1993, Aluminum and Aluminum Alloys, in ASM Specially Handbook, ASM International, Metal Park, Ohio.
- Callister, W. D., 1997, Material Science and Engineering, John Wiley and Sons, New York.
- Boyer,H. E., 1998, Quenching and Distortion Control, ASM International, Metal Park, Ohio.
- Avner, Sidney H., 1982, Introduction to Physical Metallurgy, Mc Graw-Hill International Book Company, Tokyo.
- Rollanson E. C., 1998, Metallurgy for Engineers, Edward Arnold Ltd., London.
- Bates C. E., Totten G. T., and Webster G. M., 1998, “cooling curve and quench factor characterization of 2024 and 7075 Aluminum Bar stock quenched in type 1. Polymer.” Quenchant, Vol. 29, No 1 -3.
- Hasson J.., 1992, “Quenchants: Yesterday, Today and Tomorrow”, Proceedings of the First International Conference on Quenching, Chicago Illinois.
- Bates, C. E., Javis L. M., and Totten G. E., 1986, “Use of quenching factor for predicting the properties of polymer quenching media.” Metal Science and Heat Treatment, Vol. 38, No. 5 -6, pp. 13 -17.
- Stanley J. T., 1987, Quench factor Analysis of Aluminum alloys, The Institute of Metals London, pp. 923 – 934.
- Mackenzie, D. S., and Totten G. E., 2000, “Aluminum Quenching Technology- A Review.” Materials Science Forum, Vol. 331, pp. 589 – 594.