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1 Journal of Achievements in Materials and Manufacturing Engineering

1 2006

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Ductility minimum temperature phenomenon in as cast CuNi25 alloy

100%

Nowosielski R. , Sakiewicz P. , Mazurkiewicz J.

tom Vol. 17, nr 1-2

193--196

Purpose: The aim of this paper was to present DMT phenomenon in CuNi25 alloy and describe behavior of as cast alloy during high temperature tensile tests for different strain rates. Design/methodology/approach: Numerous techniques were used to characterize properties of material: high temperature tensile tests, light microscope, scanning electron microscopy (SEM), transmission electron microscopy (TEM). Linear and point analysis of concentration executed with the help of X-ray microanalysis. Findings: It was determine from the experimental studies the course of elongation and reduction of area curves for different strain rates. Their was analyze morphology of material in the range of 300-650°C. Research limitations/implications: Further studies should be undertaken in order to correlate effects, processes and mechanism existing and superimpose in material in range of Ductility Minimum Temperature phenomenon and what should help us understand high temperature properties of mentioned material. Practical implications: Knowledge about material properties during high temperature deformation leads to selection appropriate production parameters. Misapplication of parameters leads to multiplication of costs and often destruction of material during production or operating. Correct selection of technical and economical parameters of material production give us supremacy in economic and technological competition. Originality/value: Investigations of this as cast CuNi25 alloy complete ours knowledge about mechanical properties and help us to develop correct parameters for more effective technologies for material production.