Atom exchange of martensite in Cu-13Zn-15Al alloy during non-isothermal aging

The bulk specimens with preferable orientation were utilized to investigate atom exchange of martensite in Cu-13Zn-15Al alloy during non-isothermal aging by in-situ X-ray diffraction. It is found that the exchange of Zn atoms at position III and Cu atoms at II and the exchange of Zn atoms at position III and Al atoms at I on the basal plane of martensite occur during heating at a heating rate of 5 °C/min. 13% (2/25) of Al atoms transfer from position I to position III when temperature goes up to 160 °C.