抄録
Vickers impression was applied on the polished surface of Y-TZP and WC/Y-TZP specimens with an impression load of 50 kgf. After the surface of the specimen was again ground out and polished to remove the indentation follow, it was aged at about 150°C for various times in air. The phase transformation in the locally stressed region beneath the indentation impression was investigated by X-ray analysis, SEM observation and surface profile measurement.
