Development of processing maps and constitutive relationship for thermomechanical processing of Aluminum Alloy AA2219

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dc.contributor.author Narayana Murty, S. V. S.
dc.contributor.author Sarkar, Aditya
dc.contributor.author Narayanan, P. Ramesh
dc.contributor.author Venkitakrishnan, P. V.
dc.contributor.author Mukhopadhyay, Jyoti
dc.date.accessioned 2017-04-18T10:59:49Z
dc.date.available 2017-04-18T10:59:49Z
dc.date.issued 2017-05
dc.identifier.citation Narayana Murty, S. V. S.; Sarkar, Aditya; Narayanan, P. Ramesh; Venkitakrishnan, P. V. and Mukhopadhyay, Jyoti, “Development of processing maps and constitutive relationship for thermomechanical processing of Aluminum Alloy AA2219”, Journal of Materials Engineering and Performance, DOI: 10.1007/s11665-017-2669-8, vol. 26, no. 5, pp. 2190-2203, May 2017. en_US
dc.identifier.issn 1059-9495
dc.identifier.issn 1544-1024
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/2876
dc.identifier.uri http://dx.doi.org/10.1007/s11665-017-2669-8
dc.description.abstract Isothermal uniaxial compression tests were conducted on aluminum alloy AA2219 to study the evolution of microstructure over a wide range of temperatures (300-500 °C) and strain rates (0.001-100 s−1) with a view to study the flow behavior and concurrent microstructural evolution. True stress-true strain curves showed only a gradual flow softening at all temperatures except at 300 °C where strain hardening was followed by severe flow softening. Processing map delineating the stable ‘safe’ and unstable ‘unsafe’ regions during hot working is developed and validated by comparing the microstructures observed in the deformed compression specimens. Optimum processing parameters (temperature 450 °C and strain rate 0.001 s−1) for hot deformation of AA2219 were proposed based on contour maps of efficiency of power dissipation and strain rate sensitivity parameter. The activation energy value (Qavg) of AA2219 for hot working was computed to be 169 kJ/mol. Finally, a constitutive equation for hot working of AA2219 was established as: ε˙=4.99×109⋅exp(0.06149σ)⋅exp(−168.958/RT)ε˙=4.99×109⋅exp⁡(0.06149σ)⋅exp⁡(−168.958/RT). en_US
dc.description.statementofresponsibility by S. V. S. Narayana Murty, Aditya Sarkar, P. Ramesh Narayanan, P. V. Venkitakrishnan and Jyoti Mukhopadhyay
dc.format.extent vol. 26, no. 5, pp. 2190-2203
dc.language.iso en_US en_US
dc.publisher Springer Verlag en_US
dc.subject Activation energy en_US
dc.subject Aluminum alloy AA2219 en_US
dc.subject Constitutive equation en_US
dc.subject Hot workability en_US
dc.subject Processing maps en_US
dc.title Development of processing maps and constitutive relationship for thermomechanical processing of Aluminum Alloy AA2219 en_US
dc.type Article en_US


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