Fatigue behaviour and creep resistance of Fe-Ni superalloy
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This book characterizes the wrought iron-base superalloys. It is comprised of two main parts. The first describes the microstructure, properties and applications of Fe-Ni and Ni-Fe supperalloys precipitation strengthened by intermetallic phases and carbides, and of Fe-Cr superalloys of the ODS type. The second part presents the dependencies between the initial heat treatment of a Fe-Ni alloy (A-286) and its microstructure, mechanical properties, fatigue strength and creep resistance. The investigations were conducted using specimens of the Fe-Ni alloy after two variants of heat treatment, i.e....
This book characterizes the wrought iron-base superalloys. It is comprised of two main parts. The first describes the microstructure, properties and applications of Fe-Ni and Ni-Fe supperalloys precipitation strengthened by intermetallic phases and carbides, and of Fe-Cr superalloys of the ODS type. The second part presents the dependencies between the initial heat treatment of a Fe-Ni alloy (A-286) and its microstructure, mechanical properties, fatigue strength and creep resistance. The investigations were conducted using specimens of the Fe-Ni alloy after two variants of heat treatment, i.e. solution heat treatment followed by typical single-stage ageing, and solution heat treatment followed by novel two-stage ageing. It was found that the Fe-Ni alloy after two-stage ageing was distinguished by higher strength properties coupled with a little lower plastic properties. It was also demonstrated that the Fe-Ni alloy after single-stage ageing had higher fatigue strength and creep resistance. The lower fatigue strength and creep resistance of the Fe-Ni alloy after two-stage ageing was explained by increased brittleness of the material in boundary areas.
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