The base Al-Zn superplastic alloy was investigated at 250°C to
determine the effect of small amounts of magnesium on mechanical
properties. Six alloys of nominal composition 0.00, 0.10, 0.25,
0.50, 0.75, and 1.00 weight percent magnesium, constant 78 weight
percent zinc, and variable 21 to 22 weight percent aluminum were...
The structure, hardness, and impact strength of high chromium
cast irons was investigated. From the Fe- Cr- C phase diagram,
a composition with 74.8 wt% Fe, 21.5 wt% Cr, and 3.7 wt% was
selected along the austenite-M₇C₃ eutectic trough. This composition
was bracketed by others with slightly different amounts of...