CROSSED MICRO-BANDS IN THE MARTENSITE VARIANT PAIR OF A THERMOMECHANICALLY TRAINED CU-ZN-AL ALLOY

The crossed micro-bands in the martensite variant pairs of a thermomec hanically trained Cu-25.66Zn-4.02Al (wt-%) alloy have been studied. It was found that the micro-bands pass through the interface from one ma rtensite variant to another and their orientation inside different var iants is distinct, which would remain in the parent phase after the re verse transformation and play an important role in the formation of pr eferential martensite. In fact, the crossed micro-bands are micro-twin s for accommodating the stress fields generated during thermomechanica lly training.