摘要
The effect of composition and heat treatment on the phase constituent,the size of B2-and DO_3 derived domains and martensitic thermoelastic behaviour in three CuAlNi alloys have been studied by means of metallography,TEM anti X-ray diffraction analyses.It is shown that the structure of martensite changes from 18R_1 into 2H and the transition temperature decreases with the increase of the Al content.Moreover,the size of the B2 and DO_3 derived domains decreases with the increase of cooling rate.
The effect of composition and heat treatment on the phase constituent,the size of B2-and DO_3 derived domains and martensitic thermoelastic behaviour in three CuAlNi alloys have been studied by means of metallography,TEM anti X-ray diffraction analyses.It is shown that the structure of martensite changes from 18R_1 into 2H and the transition temperature decreases with the increase of the Al content.Moreover,the size of the B2 and DO_3 derived domains decreases with the increase of cooling rate.
基金
Project supported by National Natural Science Foundation of China
