Metallographic and Fractographic Observations of Posttest Creep-Fatigue Specimens of Weld-Deposited Type 308 CRE Stainless Steel

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Description

Type 308 CRE stainless steel weld specimens were subjected to metallographic and fractographic analysis after failure in elevated temperature (593 degrees C) creep-fatigue tests. The failure mode for specimens tested under continuous-cycle fatigue conditions were predominantly transgranular. When the test cycle was modified to include a hold time at the maximum tensile strain, the failure mode became predominantly inter-phase. Sigma phase was observed within the delta-ferrite regions of the weld. However, the presence of sigma phase did not appear to affect the failure mode.

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18 p. : charts, photographs, tables

Creation Information

Williams, M. W. August 1978.

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  • Main Title: Metallographic and Fractographic Observations of Posttest Creep-Fatigue Specimens of Weld-Deposited Type 308 CRE Stainless Steel
  • Added Title: ANL (Series)
  • Added Title: Argonne National Laboratory Report ANL-78-74
  • Series Title: Argonne National Laboratory Reports

Description

Type 308 CRE stainless steel weld specimens were subjected to metallographic and fractographic analysis after failure in elevated temperature (593 degrees C) creep-fatigue tests. The failure mode for specimens tested under continuous-cycle fatigue conditions were predominantly transgranular. When the test cycle was modified to include a hold time at the maximum tensile strain, the failure mode became predominantly inter-phase. Sigma phase was observed within the delta-ferrite regions of the weld. However, the presence of sigma phase did not appear to affect the failure mode.

Physical Description

18 p. : charts, photographs, tables

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Digitized from microfiche (1).

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Creation Date

  • August 1978

Added to The UNT Digital Library

  • Aug. 4, 2015, 8:33 a.m.

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  • Aug. 4, 2016, 1:56 p.m.

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Williams, M. W. Metallographic and Fractographic Observations of Posttest Creep-Fatigue Specimens of Weld-Deposited Type 308 CRE Stainless Steel, report, August 1978; Argonne, Illinois. (digital.library.unt.edu/ark:/67531/metadc303823/: accessed October 17, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.