Microstructure and mechanical properties of cryorolled aluminum alloy AA2219 in different thermomechanical processing conditions

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dc.contributor.author Sarkar, Aditya
dc.contributor.author Saravanan, K.
dc.contributor.author Nayan, Niraj
dc.contributor.author Narayana Murty, S. V. S.
dc.contributor.author Narayanan, P. Ramesh
dc.contributor.author Venkitakrishnan, P. V.
dc.contributor.author Mukhopadhyay, Jyoti
dc.date.accessioned 2016-11-15T19:46:50Z
dc.date.available 2016-11-15T19:46:50Z
dc.date.issued 2017-01
dc.identifier.citation Sarkar, Aditya; Saravanan, K.; Nayan, Niraj; Narayana Murty, S. V. S.; Narayanan, P. Ramesh; Venkitakrishnan, P. V. and Mukhopadhyay, Jyoti, “Microstructure and mechanical properties of cryorolled aluminum alloy AA2219 in different thermomechanical processing conditions”, Metallurgical and Materials Transactions A, DOI: 10.1007/s11661-016-3807-x, Jan 2017. en_US
dc.identifier.issn 1073-5623
dc.identifier.issn 1543-1940
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/2533
dc.identifier.uri http://dx.doi.org/10.1007/s11661-016-3807-x
dc.description.abstract In the present study, aluminum alloy AA2219-T87 bars were cryorolled to various amounts of deformation in two pre-deformation conditions: (1) without solution treatment i.e., as-received T87 (WST-CR) and (2) with solution treatment (ST + CR). The solution treated and cryorolled bars were further annealed leading to a third condition: (3) solution treated, cryorolled, and annealed (CR + Annealed). Room-temperature mechanical properties have been evaluated for all three cryorolled conditions. Significant improvement in the 0.2 pct YS and UTS values was obtained for bars cryorolled to cross-sectional area reduction of more than 50 pct in the solution-treated condition (ST + CR), whereas for bars cryorolled in the without solution-treated condition (WST-CR), only an improvement in the 0.2 pct YS was observed. Cryorolling did not enhance the precipitation kinetics nor did it increase the response of the alloy to aging. The mechanical properties were correlated to the microstructures obtained by optical and transmission electron microscopy. Microstructural evolution in the ST + CR condition indicated gradual progression of the principal restoration mechanism from dynamic recovery (DRV) to dynamic recrystallization with an increasing amount of plastic deformation. Transmission electron microscopy of WST-CR and ST + CR specimens showed an increase in dislocation density as a function of the amount of deformation indicating suppression of DRV at cryogenic temperatures. Cryorolling in the solution-treated condition to cross-sectional area reduction of more than 50 pct (ST + 70 pct CR) was found to impart an optimum combination of strength and percent elongation in the present study. en_US
dc.description.statementofresponsibility by Aditya Sarkar, K. Saravanan, Niraj Nayan, S. V. S. Narayana Murty, P. Ramesh Narayanan, P. V. Venkitakrishnan and Jyoti Mukhopadhyay
dc.format.extent Vol. 48, no. 1, pp. 321–341
dc.language.iso en_US en_US
dc.publisher Springer Verlag en_US
dc.title Microstructure and mechanical properties of cryorolled aluminum alloy AA2219 in different thermomechanical processing conditions en_US
dc.type Article en_US
dc.relation.journal Metallurgical and Materials Transactions A


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