Noor Ashikin , Jamil (2013) The effect of heat treatment on the microstructure and mechanical properties of 6061 aluminium alloy. Project Report. UTeM, Melaka. (Submitted)
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Abstract
Aluminum has been used in wide range of applications. Al alloy 6061 most used in the automotive components and construction of aircraft structures. Heat treatment process helps in improve the mechanical properties and strength of aluminum. The objective of this research is to identify the effect of various heat treatment process on the microstructure and mechanical properties of 6061 aluminum alloy. The heat treatment process involve in this research are, annealing, quenching, normalizing or naturally aged, solution heat treated and precipitating hardening or artificial aging. Besides that, this research also analyzes the effect of cooling rate on aluminum alloy during heat treatment by using three different methods. The effect of aging time in the precipitation hardening process was also identified. This study shows that fast cooling rate from quenching sample produce finer grain size and higher mechanical properties while slow cooling rate from annealing sample produce coarser grain size and lower mechanical properties. Quenching sample shows the highest hardness value (68 HRB) while annealing sample shows lowest hardness value which is 13 HRB. In addition, this study shows that in precipitating hardening process higher temperature of aging produce peak aged at shorter time of aging. For precipitating hardening process, the highest hardness recorded is 97 HRB from sample aging at 100⁰C for seven hours of aging time. In addition, the peak of aging in precipitating hardening at 200⁰C sample is at 2 hours of aging time. As a conclusion, after the heat treatment process, the microstructure and mechanical properties of Al alloy were altered accordingly.
| Item Type: | Final Year Project (Project Report) |
|---|---|
| Uncontrolled Keywords: | alluminium alloys, heat treatment |
| Subjects: | T Technology > T Technology (General) T Technology > TA Engineering (General). Civil engineering (General) |
| Divisions: | Library > Final Year Project > FKM |
| Depositing User: | F Haslinda Harun |
| Date Deposited: | 06 Apr 2015 04:22 |
| Last Modified: | 28 May 2015 04:37 |
| URI: | http://digitalcollection.utem.edu.my/id/eprint/14240 |
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