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Effect of heat treatment variables on the formation of precipitate free zones (PFZs) in Mg-8Al-0.5Zn alloy
journal contribution
posted on 2018-02-01, 00:00 authored by A Zindal, J Jain, R Prasad, S S Singh, R Sarvesha, Pavel CizekPavel Cizek, Matthew BarnettMatthew BarnettThe present study is focussed on investigating the effect of heat treatment variables on the formation of precipitate free zones (PFZs) in the AZ80 Mg alloy. The effect of solutionizing temperature, quenching media, aging temperature and time on the PFZ development has been systematically examined. Scanning electron microscopy and nanoindentation were employed to characterize the PFZ regions. Electron probe micro analysis (EPMA) was used to examine the role of solute depletion in the formation of these zones. Moreover, the estimation of vacancy concentration profiles near the grain boundary was used to investigate the role of vacancy depletion. The solute depletion is found to be the dominant mechanism in the development of PFZ regions as compared to vacancy.
History
Journal
Materials characterizationVolume
136Pagination
175 - 182Publisher
ElsevierLocation
Amsterdam, The NetherlandsPublisher DOI
ISSN
1044-5803Language
engPublication classification
C1 Refereed article in a scholarly journalCopyright notice
2017, ElsevierUsage metrics
Keywords
Science & TechnologyTechnologyMaterials Science, MultidisciplinaryMetallurgy & Metallurgical EngineeringMaterials Science, Characterization & TestingMaterials SciencePFZMg alloyPrecipitatesEPMANanoindentationAL-ZN-MGMECHANICAL-PROPERTIESAL-ZN-MG(-AG) ALLOYSLI ALLOYSMAGNESIUMALUMINUMSYSTEMMICROSTRUCTURESNUCLEATIONFRACTUREMechanical Engineering
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