Abstract:The precipitation process of tiny Cu clusters in the early stage of aging for FeCu alloys was investigated by positron annihilation lifetime spectroscopy (PALS), Doppler broadening spectroscopy (DBS) and coincidence Doppler broadening spectroscopy (CDB). The different effect of quenching and aging on the formation of Cu precipitates and Cu-V complexes in FeCu alloys was discussed. The Cu-V complexes and Cu clusters act as the shallow positron trapping sites has been confirmed. Their ability to trap positrons c… Show more
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