Please use this identifier to cite or link to this item: https://idr.l1.nitk.ac.in/jspui/handle/123456789/10839
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dc.contributor.authorNandana, M.S.
dc.contributor.authorUdaya, Bhat, K.
dc.contributor.authorManjunatha, C.M.
dc.date.accessioned2020-03-31T08:23:10Z-
dc.date.available2020-03-31T08:23:10Z-
dc.date.issued2018
dc.identifier.citationJournal of Materials Engineering and Performance, 2018, Vol.27, 4, pp.1628-1634en_US
dc.identifier.urihttp://idr.nitk.ac.in/jspui/handle/123456789/10839-
dc.description.abstractThe effect of retrogression time during retrogression and re-aging (RRA) treatment of AA7010 is evaluated by performing tensile tests and characterizing the microchemistry of the grain boundary precipitates (GBPs) using transmission electron microscope coupled with the energy-dispersive spectroscopy. Retrogression time is evaluated so that the ultimate tensile strength of the RRA-treated sample is equal to that of the T6-treated sample and the grain boundary microstructure similar to that of the over-aged (T7451) condition. The investigation reveals that the sample retrogressed at 200 C for 20 min has UTS of 586 MPa which is equivalent to that of the T6 sample and 11.5% higher than that of the T7451 condition. The fracture toughness of the RRA-treated sample was 41 MPa?m. Microstructure of the RRA-treated sample is similar to T7451, along the grain boundaries and in the grain interior similar to that of the T6-treated sample. Energy-dispersive spectroscopy confirmed the increment of Cu content on the GBP s with increase in the retrogression time, which is expected to improve the stress corrosion cracking resistance of the alloy. 2018, ASM International.en_US
dc.titleEffect of Retrogression Heat Treatment Time on Microstructure and Mechanical Properties of AA7010en_US
dc.typeArticleen_US
Appears in Collections:1. Journal Articles

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