Krishna, K Gopala and Manoharan, T C and Kumar, Satender (2007) Effect of Cryo-Deformation on Aging Characteristics of Age-Hardenable Aluminium Alloys. Exploratory (OLP). CSIR-NML, Jamshedpur. (Submitted)
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Abstract
The effect of plastic deformation by cryo-rolling on the microstructural evolution and aging characteristics of an Al-Zn-Mg alloy was investigated employing DSC, hardness measurements and TEM/EDAX. Specimens were water quenched after a solution heat-treatment, cryo-rolled upto - 90% deformation, short annealed and aged in 3 different temper conditions. The specimens aged under T6 condition have attained peak hardness with faster precipitation kinetics, during the second step of aging, i.e. at 150oC with in 1 to 3h, the time required being inversely proportional to the amount of deformation. The microstructure consisted of ultra-fine grains with size ranging between 100-250nm. This also resulted in finer precipitates of strengthening particles.
| Item Type: | Project Reports (Exploratory (OLP)) |
|---|---|
| Official URL/DOI: | http://eprint.nmlindia.org/6506 |
| Uncontrolled Keywords: | CRYO-Deformation; microstructure; heat treatment; reciprocal extrusion / |
| Divisions: | NML Chennai |
| ID Code: | 6506 |
| Deposited By: | Sahu A K |
| Deposited On: | 12 Jul 2013 09:53 |
| Last Modified: | 12 Jul 2013 09:53 |
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