POSITRON ANNIHILATION STUDY OF HEAT TREATMENT PROCESS IN Fe-22 at.-% Al

Acta Metall Sin

1988, Vol. 24

Issue (2): 221-222 DOI:

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POSITRON ANNIHILATION STUDY OF HEAT TREATMENT PROCESS IN Fe-22 at.-% Al

WANG Jingcheng;LIU Dajun Shanghai Iron and Steel Research Institute

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WANG Jingcheng;LIU Dajun Shanghai Iron and Steel Research Institute. POSITRON ANNIHILATION STUDY OF HEAT TREATMENT PROCESS IN Fe-22 at.-% Al. Acta Metall Sin, 1988, 24(2): 221-222.

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Abstract Specimens of Fe-22 at-%Al subjected to different heat treatment process have beenstudied using Doppler broadening measurements. The calculated data according to the trappingmodel was shown to be in good agreement with the measured, shape parameter. The microstruc-tural change during each stage of heating and cooling has been discussed in relation to the shapeparameter, which indicates that positron annihilation data is valuable for establishing the prac-tical heat treatment process of the alloy.

Key words: positron annihilation Fe-Al alloy heat treatment process

Received: 18 February 1988

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