Browsing CoA. Memoranda by Author "Naziri, H."

Browsing CoA. Memoranda by Author "Naziri, H."

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  • Anisotropic superplasticity 
    Naziri, H.; Pearce, R. (College of Aeronautics, 1969-06)
    Anisotropy has already been mentioned in connexion with SP. Johnson et al (1) have shown that specimens of circular cross-section, machined from hot-rolled SP Zn/Al eutectic and eutectoid plate, become elliptical on ...
  • The effect of grain size on workhardening and superplasticity in Zn/0.4% Al Alloy 
    Naziri, H.; Pearce, R. (College of Aeronautics, 1969-06)
    Superplasticity*requires, amongst other things, a metal with a grain-size in the range 0.5-5μ. Theories of SP invoking dynamic recovery require that the cell-Size of the substructure for the alloy in question is larger ...
  • Extended plasticity in commercial-purity zinc 
    Williams, D. A. C.; Naziri, H.; Pearce, R. (College of Aeronautics, 1968-09)
    90% rolling-reduction of annealed commercial-purity zinc sheet (grain size 100 - 150 μ) results in the fragmentation of the large grains into, finally, stable micro-grains, 1 - 211 in diameter. The stability of the ...

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