Elevated-temperature low-cycle fatigue behavior of different heats of Type 304 stainless steel. [593/sup 0/C]

Journal Article · Tue Nov 01 04:00:00 EST 1977 · Metall. Trans., A; (United States)

DOI:https://doi.org/10.1007/BF02646867· OSTI ID:6427864

Maiya, P S; Majumdar, S

The low-cycle fatigue results of three heats of Type 304 stainless steel have been obtained at 593/sup 0/C under selected cyclic-loading conditions. The results are compared with those generated for a reference heat of steel for which extensive low-cycle fatigue data are available. Observation of the microstructures of specimens in the pretest condition after a given heat treatment and examination of fatigue fracture surfaces were conducted by means of optical and scanning electron microscopy and X-ray analysis. The three heats of stainless steel, which exhibit different microstructural features, show approximately the same continuous-cycling low-cycle fatigue behavior as that of the reference heat. However, the three materials show improved fatigue strength during tensile hold-time conditions where significant creep occurs. The fatigue properties determined in the present study for the different heats of steel are consistent with the observed microstructural features. Finally, the creep-fatigue properties of the heats as well as the microstructural observations are discussed in terms of a damage-rate approach recently developed by the authors.

• Research Organization: Argonne National Lab., IL
• OSTI ID: 6427864
• Journal Information: Metall. Trans., A; (United States), Journal Name: Metall. Trans., A; (United States) Vol. 8; ISSN MTTAB
• Country of Publication: United States
• Language: English

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AGING
ALLOYS
ANNEALING
BREEDER REACTORS
CHROMIUM ALLOYS
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HEAT TREATMENTS
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LIQUID METAL COOLED REACTORS
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MATERIALS
MECHANICAL PROPERTIES
MICROSTRUCTURE
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