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EFFECT OF PROCESSING ON THE HIGH TEMPERATURE LOW CYCLE FATIGUE PROPERTIES OF MODIFIED 9Cr‐1Mo FERRITIC STEEL
Author(s) -
Ebi G.,
McEvily A. J.
Publication year - 1984
Publication title -
fatigue and fracture of engineering materials and structures
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 84
eISSN - 1460-2695
pISSN - 8756-758X
DOI - 10.1111/j.1460-2695.1984.tb00198.x
Subject(s) - materials science , low cycle fatigue , metallurgy , hot rolled , grain size , fatigue testing , composite material
The high temperature low cycle fatigue properties of modified 9Cr‐1Mo ferritic steel in a hot forged and a hot rolled condition have been evaluated. The hot forged material exhibited inferior fatigue properties as compared to the finer grained hot rolled material. Analysis of the data indicates that a larger grain size adversely affects the initiation stage but has little effect on the propagation stage. A steeper slope on the Coffin‐Manson plot results when the number of cycles to initiation is reduced.