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Influence of niobium on stacking‐fault energy of all‐austenite stainless steels
Author(s) -
Martinez Luis G.,
Imakuma Kengo,
Padilha Angelo F.
Publication year - 1992
Publication title -
steel research
Language(s) - English
Resource type - Journals
eISSN - 1869-344X
pISSN - 0177-4832
DOI - 10.1002/srin.199200503
Subject(s) - niobium , austenite , stacking fault energy , metallurgy , stacking fault , vacancy defect , crystallography , stacking , matrix (chemical analysis) , chemistry , materials science , analytical chemistry (journal) , dislocation , alloy , microstructure , composite material , organic chemistry , chromatography
The effects of niobium addition on a completely austenitic stainless steel matrix consisting of Fe‐15%Cr‐15%Ni, with about 0, 0.5, 1 and 2% niobium, were studied by determination of stacking fault energies by means of X‐ray diffraction analysis. A strong influence of niobium on stacking‐fault energies was found, whose behaviour can be explained as being due to decrease in the electron/atom ratio and increase in the L. Pauling electron vacancy number of austenitic Fe‐Cr‐Ni matrix brought on by niobium.