Microstructure dependence of yielding and fracture in Cd-Zn alloys

The coefficient of logarithmic work-hardening, the yield stress and the fracture stress of Cd--2 wt.% Zn alloy of different grain diameters and of Cd--17.4 wt.% Zn alloy decrease with increasing working temperature. Two relaxation temperature regions have been found, the low-temperature region of re...

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Bibliographic Details
Published in:Czechoslovak journal of physics 1990-11, Vol.40 (11), p.1267-1273
Main Authors: SAKR, M. S, EL-SHAZLY, A. A, MOSTAFA, M. M, EL-SAYED, H. A, MOHAMED, A. A
Format: Article
Language:English
Subjects:
Applied sciences
Condensed matter: structure, mechanical and thermal properties
Deformation and plasticity (including yield, ductility, and superplasticity)
Exact sciences and technology
Mechanical and acoustical properties of condensed matter
Mechanical properties of solids
Metals. Metallurgy
Physics
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Summary:The coefficient of logarithmic work-hardening, the yield stress and the fracture stress of Cd--2 wt.% Zn alloy of different grain diameters and of Cd--17.4 wt.% Zn alloy decrease with increasing working temperature. Two relaxation temperature regions have been found, the low-temperature region of relaxation ( < 483K) and the high-temperature region ( > 483K). The fracture surface energy for Cd--2 wt.% Zn alloy has been calculated and found to be 1.2 J/m exp 2 at the two temperature regions of relaxation. X-ray investigations show that the residual internal strains in the deformed samples increase with increasing working temperature and exhibit a peak value at 483K. Graphs. 14 ref.--AA
ISSN:0011-4626
1572-9486
DOI:10.1007/BF01605055