โ Scribed by T Broom; C.S Barrett
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determinations on annealed and deformed wires of some cobalt-nickel alloys have confirmed that stacking faults can make a large direct or indirect contribution to the increase in resistivity due to cold-work. Although the relative densities of stacking faults in the various alloy> had generally to be deduced from the known transformation characteristics, X-ray e-idence was obtained for the presence of stacking faults in the deformed allo!, which had the largest increase in resistivity.
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The effect of plastic deformation on the resistivity of gold-palladium alloys of various stomic compositions was observed. The resistivity was found to decrease on plastic strain for alloys containing between 10 and 60 at. y0 palladium. The other alloys in the series showed an increase in resistivi
Measurements of stress and strain during tensile deformation at 78ยฐK and after subsequent recovery treatments suggest that in solid solution alloys the higher strength is primarily associated with the higher yield stress and the presence of additional or more effective dislocation barriers in the in
Slow strain-rate tensile tests have been performed on hydrogen-charged f.c.c. nickel-iron alloys. The hydrogen embrittlement observed in pure nickel is suppressed by alloying with iron so that the deformation and fracture behaviour of alloys containing 50 and 60 % o f of hydrogen at levels in the or