Irradiation-Induced Softening of Ni sub 3 P and (Ni,Fe,Cr) sub 3 P Alloys

Results are presented on changes of microhardness, due to amorphization by fast ions. The measurements have been performed on a model alloy Ni sub 3 P and on the brazed joint of stainless steel 316L, containing M sub 3 P (M: nickel, iron, chromium) as one of the phases. The examination of microhardn...

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Bibliographic Details
Published inScripta metallurgica et materialia Vol. 29; no. 6; pp. 841 - 844
Main Authors Schumacher, G, Miekeley, W, Wahi, R P
Format Journal Article
LanguageEnglish
Published 15.09.1993
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Summary:Results are presented on changes of microhardness, due to amorphization by fast ions. The measurements have been performed on a model alloy Ni sub 3 P and on the brazed joint of stainless steel 316L, containing M sub 3 P (M: nickel, iron, chromium) as one of the phases. The examination of microhardness and microstructure of Ni sub 3 P and M sub 3 P reveals a pronounced softening, due to the transition from the crystalline to the amorphous state. The results can be summarized as follows. Saturation in the softening is achieved after 1.3 dpa. The saturation values of microhardness in completely amorphized states agree with the values of amorphous alloys of similar compositions obtained by rapid quenching. The TEM examinations conducted on specimens irradiated over a larger fluence range (0.01-30 dpa) showed that the crystalline-to-amorphous transition is already completed after 0.3 dpa.
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ISSN:0956-716X