Mechanical properties of in situ consolidated nanocrystalline multi-phase Al–Pb–W alloy studied by nanoindentation

dc.contributor.author Varam, Sreedevi
dc.contributor.author Prasad, Muvva D.
dc.contributor.author Rao, K. Bhanu Sankara
dc.contributor.author Rajulapati, Koteswararao V.
dc.date.accessioned 2022-03-27T04:04:01Z
dc.date.available 2022-03-27T04:04:01Z
dc.date.issued 2016-12-11
dc.description.abstract Formation of chunks of various sizes ranging between 2 and 6 mm was achieved using high-energy ball milling in Al–1at.%Pb–1at.%W alloy system at room temperature during milling itself, aiding in in situ consolidation. X-ray diffraction and transmission electron microscopy (TEM) studies indicate the formation of multi-phase structure with nanocrystalline structural features. From TEM data, an average grain size of 23 nm was obtained for Al matrix and the second-phase particles were around 5 nm. A high strain rate sensitivity (SRS) of 0.071 ± 0.004 and an activation volume of 4.71b3 were measured using nanoindentation. Modulus mapping studies were carried out using Berkovich tip in dynamic mechanical analysis mode coupled with in situ scanning probe microscopy imaging. The salient feature of this investigation is highlighting the role of different phases, their crystal structures and the resultant interfaces on the overall SRS and activation volume of a multi-phase nc material.
dc.identifier.citation Philosophical Magazine. v.96(35)
dc.identifier.issn 14786435
dc.identifier.uri 10.1080/14786435.2016.1234721
dc.identifier.uri https://www.tandfonline.com/doi/full/10.1080/14786435.2016.1234721
dc.identifier.uri https://dspace.uohyd.ac.in/handle/1/6153
dc.subject activation volume
dc.subject In situ consolidation
dc.subject modulus mapping
dc.subject multi-phase
dc.subject Nanocrystalline
dc.subject strain rate sensitivity
dc.title Mechanical properties of in situ consolidated nanocrystalline multi-phase Al–Pb–W alloy studied by nanoindentation
dc.type Journal. Article
dspace.entity.type
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