B K , Prasad (2000) Microstructure and Tensile Property Characterization of a Nickel Containing Zinc-Based Alloy: Effects of Heat Treatment and Test Conditions. Materials Science and Engineering A, 277A. pp. 95-101. ISSN 0921-5093

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Abstract

This study analyzes the effects produced by heat treatment on the microstructural features, electrical conductivity, hardness and tensile strength, and elongation of a nickel-containing zinc-based alloy. The influences of test temperature and strain rate on the tensile properties of the alloy have also been studied. The as-cast alloy showed primary a dendrites surrounded by eutectoid a+h and o. Heat treatment led to breaking of the dendritic structure and generation of microconstituents with improved uniformity of distribution. The nickel-containing phase was also observed in as-cast as well as heat-treated conditions. Heat treatment had negligible influence on the morphology of the nickel-containing phase. Tensile properties improved with strain rate. Increasing temperature caused the tensile strength to reduce, while elongation was affected in an opposite manner. Heat-treated specimens attained less tensile strength and hardness but improved elongation as compared with the as-cast alloy. The observed response of the alloy has been explained on the basis of specific features of its various microconstituents and substantiated with its fractographic features and subsurface characteristics.

Item Type:	Article
Subjects:	Material/Component Development, Processing and Characterization > Tribology
Divisions:	UNSPECIFIED
Depositing User:	Mr. B.K. Prasad
Date Deposited:	20 Aug 2013 07:32
Last Modified:	13 Feb 2014 11:06
URI:	http://ampri.csircentral.net/id/eprint/417

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