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  4. № 19 2013
  5. P. 15

The strength and ductility of copper bars subjected to unidirectional and multi-directional torsion

Y.Podrezov,
 
E.G.Pashinskaya,
 
D.Verbylo,
 
M.A.Kraliuk,
 
N.Danilenko,
 
I.Okun
 

I. M. Frantsevich Institute for Problems of Materials Science of the NAS of Ukraine, Omeliana Pritsaka str.,3, Kyiv, 03142, Ukraine
Electron Microscopy and Strength of Materials - Kiev: Frantsevich Institute for Problems of Materials Science NASU, 2013, #19
http://www.materials.kiev.ua/article/763

Abstract

The tensile and torsion mechanical properties of copper wire, previously subjected to torsion on the different number of turns in the forward and reverse direction was studied. It was found that the mechanical properties exhibit a non-monotonic character depending on the degree of pre-deformation. Fractographic analysis of surfaces of destruction of the samples was curried out. It is followed from the analysis of fraktogramm that samples deformed forward to 25 revolutions destroyed virtually no neck, but as the number of revolutions of inverse tendency to neck formation gradually restored. Full text download


FLOW STRESS, TENSION, THE COMBINED STRAIN, TORSION

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