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The influence of high temperature ageing on the Structure of Alloy 800
Author(s) -
CzyrskaFilemonowicz A.,
Spiradek K.
Publication year - 1983
Publication title -
materialwissenschaft und werkstofftechnik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.285
H-Index - 38
eISSN - 1521-4052
pISSN - 0933-5137
DOI - 10.1002/mawe.19830141208
Subject(s) - materials science , microstructure , transmission electron microscopy , alloy , carbide , metallurgy , optical microscope , precipitation , austenite , foil method , isothermal process , grain boundary , scanning electron microscope , crystallography , composite material , chemistry , nanotechnology , physics , meteorology , thermodynamics
The report presents investigations of the microstructure of commercial Alloy 800 after isothermal ageing at 900°C, carried out by optical microscopy and by transmission electron microscopy using replica and thin foil techniques. The high temperature ageing was characterized predominantly by precipitation of carbides on grain and twin boundaries of the austenitic matrix, as well as on dislocations within the grains. The carbides were identified, using electron microscope diffraction and X‐ray phase analysis of electrolytic extractions, as (Cr, Fe) 23 C 6 , Ti (C, N) and TiC.