Yield point phenomena in alpha brass and other face-centred cubic metals

TLDR

Yield points in 70:30 alpha brass were induced by ageing under stress, unloading, and combinations of these two techniques. Yield point characteristics in 70:30 alpha brass vary with temperature, and ageing under stress exhibits more complex behavior than previously thought, as confirmed by experiments on other face‑centred cubic metals.

Abstract

Abstract Abstract The characteristics of yield points which may be produced in a 70:30 alpha brass have been observed at several temperatures. The yield point phenomena were produced by various techniques which included ageing under stress, unloading and combinations of the two. The effects arising from ageing under stress are compared to experiments on repeated yielding. The particular results in brass are supported by various experiments with a range of face-centred cubic metals. From the evidence presented it seems that the process of ageing is more complex than hitherto supposed.