YIELD IN DISPERSION HARDENED COPPER ALLOYS.
ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (ENGLAND)
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Single crystals of copper containing dispersed particles of alumina and silica have been tested in tension, to determine how dislocations pass oxide particles intersecting their slip planes. Tensile tests were conducted on five alloys at various temperatures from 78K to 1170K. The strain rate sensitivity and the effect on flow stress of diffusing 10 wt Zn into the Cu matrix were measured over the same temperature range. Thin foils for transmission electron microscopy were prepared from the gauge lengths of the strain crystals to examine dislocation structures and the size and spacing of oxide particles. Author
- Metallurgy and Metallography