Please use this identifier to cite or link to this item: http://localhost:8080/xmlui/handle/123456789/1929
Full metadata record
DC FieldValueLanguage
dc.contributor.authorS, Muthu Kumaran-
dc.contributor.authorN, Priyadharsini-
dc.contributor.authorV, Rajendran-
dc.contributor.authorT, Jayakumar-
dc.contributor.authorP, Palanichamy-
dc.contributor.authorP, Shankar-
dc.contributor.authorBaldev Raj-
dc.date.accessioned2020-10-01T10:36:35Z-
dc.date.available2020-10-01T10:36:35Z-
dc.date.issued2016-11-05-
dc.identifier.issn0921-5093-
dc.identifier.urihttps://www.sciencedirect.com/science/article/abs/pii/S0921509306015073-
dc.identifier.urihttp://localhost:8080/xmlui/handle/123456789/1929-
dc.description.abstractTailoring of microstructure through precise control of thermo-mechanical treatment is essential to obtain the desired properties of 8090 Al–Li Alloy for aerospace applications. Non-destructive diagnosis of nano-scale pre-precipitation and precipitation events, which govern the mechanical behaviour of the alloy, can provide valuable support in controlling the thermal treatment for achieving the peak aged or any alternate desired microstructural state. On-line high temperature evaluation of ultrasonic velocity and attenuation measurements in a series of as-received, solution annealed and prior treated specimens has resulted in differentiating the various phase transitions. The local maximum transition temperatures at the selected heating rate for GP zone formation, precipitation of coherent δ′, dissolution of δ′ and precipitation of stable S′ and δ have been identified to be 368, 470, 532 and 590 K, respectively. It is suggested from this study that the first differential plots of the ultrasonic velocity could be a useful method to differentiate unambiguously all the fine scale precipitation reactions in 8090 Al–Li alloy. Young's modulus and shear modulus have been evaluated from the ultrasonic parameters and their effects on temperature and the microstructural state have been studied. SEM and microhardness results are found to correlate well with the phase transition behaviour observed by ultrasonic measurements.en_US
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.subject8090 Al–Li alloyen_US
dc.subjectGP zonesen_US
dc.subjectPrecipitationen_US
dc.subjectElastic constantsen_US
dc.subjectUltrasonic velocityen_US
dc.subjectUltrasonic attenuationen_US
dc.titleIN SITU HIGH TEMPERATURE ULTRASONIC EVALUATION FOR ON-LINE CHARACTERISATION OF FINE SCALE PRECIPITATION REACTIONS IN 8090 AL–LI ALLOYen_US
dc.typeArticleen_US
Appears in Collections:International Journals



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.