DSpace Collection: 2012 Publications
http://localhost:8080/xmlui/handle/123456789/223
2012 Publications2024-03-29T09:59:17ZHot Tearing Susceptibility of Magnesium–Gadolinium Binary Alloys
http://localhost:8080/xmlui/handle/123456789/2536
Title: Hot Tearing Susceptibility of Magnesium–Gadolinium Binary Alloys
Authors: Srinivasan, Amirthalingam; Zhi Wang; Yuanding Huang; Felix Beckmann; Karl Ulrich Kainer; Norbert Hort
Abstract: Hot tearing susceptibility of Mg–Gd alloys are
investigated using instrumented constrained rod casting
(CRC) apparatus, and found that the susceptibility increases with increase in Gd content, and reaches a maximum at
2 % after which it decreases to a minimum with 10 % Gd.
The high susceptibility observed with 2 % Gd is due to its
columnar structure and low amount of eutectic liquid at the
time of cracking, whereas equiaxed grain and high liquid
content which facilitates crack healing are the reasons for
the low susceptibility of Mg–10 Gd alloy2012-12-01T00:00:00ZErratum to: Corynebacterium Glutamicum as a Potent Biocatalyst for the Bioconversion of Pentose Sugars to Value-Added Products
http://localhost:8080/xmlui/handle/123456789/2519
Title: Erratum to: Corynebacterium Glutamicum as a Potent Biocatalyst for the Bioconversion of Pentose Sugars to Value-Added Products
Authors: Vipin Gopinath; Anusree Murali; Dhar Kiran, S; Nampoothiri, K M2012-01-01T00:00:00ZEffect of Mg on Solidification Microstructures of Homogenous and Functionally Graded A390 Aluminum Alloys
http://localhost:8080/xmlui/handle/123456789/2518
Title: Effect of Mg on Solidification Microstructures of Homogenous and Functionally Graded A390 Aluminum Alloys
Authors: Jayakumar, E; Rajan, T P D; Pai, B C
Abstract: Hypereutectic Al–Si alloys are used in components that require high resistance wear and corrosion,
good mechanical properties, low thermal expansion and
less density. The size and morphology of hard primary
silicon particles present in Al–Si alloys greatly influences
the mechanical properties. Addition of Mg leads to formation of intermetallic Mg2Si phases, which contributes
towards the properties of high silicon alloy as well as alters
the nature and quantity of primary silicon formed. The high
silicon alloy subjected to centrifugal casting leads to the
formation of functionally gradient material, which provides
variation in spatial and continuous distribution of primary
phases in a definite direction exhibiting selective properties
and functions within a component. The present study is to
evaluate the effect of Mg on solidification microstructures
of homogenous and functionally graded A390 aluminium
alloys. The addition of Mg from 3 to 5 % in A390 alloy
using Al–20Mg master alloy has shown a transformation
from primary silicon rich matrix to Mg2Si rich matrix.
Centrifugal casting shows the gradient distribution of primary silicon and Mg2Si phases towards the inner periphery
of the casting2012-10-10T00:00:00ZDevelopments in Solidification Processing of Functionally Graded Aluminium Alloys and Composites by Centrifugal Casting Technique
http://localhost:8080/xmlui/handle/123456789/2516
Title: Developments in Solidification Processing of Functionally Graded Aluminium Alloys and Composites by Centrifugal Casting Technique
Authors: Rajan, T P D; Jayakumar, E; Pai, B C
Abstract: Centrifugal casting is one of the potential solidification processing techniques used for producing near-net shaped
symmetrical cast components with improved properties. The
emergence of new class of functionally graded materials has
propelled this technique for the fabrication of engineering
components and structures with graded property. The specific
properties obtained by the use of functionally graded metal
matrix composites (FGMMC) are high temperature surface wear
resistance, surface friction and thermal properties, adjustable
thermal mismatching, reduced interfacial stresses, increased
adhesion at metal–ceramic interface, minimized thermal stresses
and increased fracture toughness and crack retardation. Among
various processing techniques available for the fabrication of
FGMMC, centrifugal casting hasemerged as the simplest and
cost effective technique for producing large size engineering
components of FGMMC. The present paper gives an overview
on the developments in use of centrifugal processing technique
for processing various functionally graded aluminium alloys and
composites. The influence of various process and solidification
parameters on microstructure and properties of graded alloys and
composites are described2012-09-11T00:00:00Z