Effects of hydrostatic tension on cleavage fracture of pure polycrystalline zinc

Curry, D.A.; King, J.E. and Knott, J.F. (1978). Effects of hydrostatic tension on cleavage fracture of pure polycrystalline zinc. Medium Econometrische Toepassingen, 12 (5), pp. 247-250.

Abstract

A study was made of notch effects on the cleavage fracture of polycrystalline zinc. It was seen that the nominal fracture stress of SENB specimens was independent of notch angle. The maximum tensile stress below the notch at fracture in SENB specimens was shown to be different from the tensile stress at fracture in tensile testpieces over a temperature range from −196 to −17°C. The notch root strain at fracture was found to be the same as the uniaxial tensile fracture strain over this temperature interval. These results were interpreted as showing the cleavage fracture of polycrystalline zinc to be shear-stress or initiation controlled, as predicted by Stroh's dislocation model of cleavage.

Publication DOI: https://doi.org/10.1179/msc.1978.12.5.247
Divisions: Aston University (General)
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Uncontrolled Keywords: zinc and alloys,Engineering(all)
Published Date: 1978-05-01

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