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This paper deals with tensile properties of a few zinc -27.5% Al based alloys under varying material composition (wherein copper has partially been replaced through nickel/silicon/nickel plus silicon) and microstructural features. The effects of: (i) strain rate at room temperature; and (ii) test temperature at a typical strain rate on the tensile (strength and elongation) properties of the alloys have also been studied. Tensile properties improved with strain rate irrespective of the alloy composition/microstructure. On the contrary, the tensile strength deteriorated with temperature while elongation followed a reverse trend. In general, the nickel/silicon-free alloy attained highest strength and elongation under all the test conditions except at the maximum test temperature. This was followed by those of the nickel containing alloy while the presence of silicon/silicon plus nickel also deteriorated the property at lower temperatures. However, alloying with nickel/silicon/nickel plus silicon caused the strength of the alloy system to become less temperature sensitive. The study suggests that it is quite possible to develop a variety of zinc-based alloys with different combinations

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Author

B.K Prasad

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0921-5093)

Published

1998

Language

EN

Field

Engineering (Physical Sciences)