Faculty Publications

Permanent URI for this communityhttps://idr.nitk.ac.in/handle/123456789/18736

Publications by NITK Faculty

Browse

Filters

20212

Settings

Author: search.filters.author.Bhat Panemangalore, D.B.Subject: search.filters.subject.Microstructure

Search Results

Now showing 1 - 2 of 2
  • No Thumbnail Available
    Item
    Microstructural Aspects of Metal-Matrix Composites
    (Elsevier, 2021) Bhat Panemangalore, D.B.; Shabadi, R.
    Microstructures play a very important role in deciding the end properties of an alloy or a composite. Optimized microstructure could be obtained by a careful choice of processing technique and selection of materials. Metal-matrix composites (MMCs) that have been developed significantly over the last five decades possess valuable properties. MMCs can be tailored with myriad of variations to suit for a particular application and hence they belong to a unique class of materials. However, it is important to understand the microstructural aspects to understand the behavior of the component in different environmental and working conditions. This article presents an overview on different microstructural aspects of metal matrix composites. © 2021 Elsevier Ltd. All rights reserved.
  • No Thumbnail Available
    Item
    Corrosion behavior, microstructure and mechanical properties of novel mg-zn-ca-er alloy for bio-medical applications
    (MDPI AG, 2021) Bhat Panemangalore, D.B.; Shabadi, R.; Gupta, M.
    In this study, the effect of calcium (Ca) and erbium (Er) on the microstructure, mechanical properties, and corrosion behavior of magnesium-zinc alloys is reported. The alloys were prepared using disintegrated melt deposition (DMD) technique using the alloying additions as Zn, Ca, and Mg-Er master alloys and followed by hot extrusion. Results show that alloying addition of Er has significantly reduced the grain sizes of Mg-Zn alloys and also when compared to pure magnesium base material. It also has substantially enhanced both the tensile and the compressive properties by favoring the formation of MgZn2 type secondary phases that are uniformly distributed during hot-extrusion. The quaternary Mg-Zn-Ca-Er alloy exhibited the highest strength due to lower grain size and particle strengthening due to the influence of the rare earth addition Er. The observed elongation was a result of extensive twinning observed in the alloys. Also, the degradation rates have been substantially reduced as a result of alloying additions and it is attributed to the barrier effect caused by the secondary phases. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.