A QUENCHING INDUCED PLANAR DEFECT OF MARTENSITE IN Cu-Zn-Al ALLOY

A new kind of planar defect named non-basal plane stacking faults has been studied by using trace analysis and lattice image techniques.It has been found that they are located in (125)_M plane of martensite lattice.By lattice image observation,the non-basal plane stack- ing faults are argued to be induced by two incomplete basal plane stacking faults and may be the results of rapid quenching.The defects are regarded as anomalous structures of martensite.