Cyclic-Deformation Resistance of Weld-Deposited Type 16-8-2 Stainless Steel at 593 Degrees C

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Description

This report presents results from an investigation on the creep-fatigue and cyclic-deformation of Type 16-8-2 (16% Cr-8% Ni-2% Mo) stainless steel weld metal. Tests were conducted in air at 593 degrees C and a strain rate of 0.004 s⁻¹. Comparisons with data for Type 316 stainless steel base metal indicated that the weld metal has significantly longer fatigue lives for several tension hold-time tests. This is attributed to the fine duplex microstructure of the weld metal that inhibits the growth rate of cracks. Additional studies on the cyclic deformation behavior of the weld metal indicate that the material is strain-history ... continued below

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35 p. : ill., charts, tables

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Raske, D. T. August 1977.

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  • Main Title: Cyclic-Deformation Resistance of Weld-Deposited Type 16-8-2 Stainless Steel at 593 Degrees C
  • Added Title: ANL (Series)
  • Added Title: Argonne National Laboratory Report ANL-77-72
  • Series Title: Argonne National Laboratory Reports

Description

This report presents results from an investigation on the creep-fatigue and cyclic-deformation of Type 16-8-2 (16% Cr-8% Ni-2% Mo) stainless steel weld metal. Tests were conducted in air at 593 degrees C and a strain rate of 0.004 s⁻¹. Comparisons with data for Type 316 stainless steel base metal indicated that the weld metal has significantly longer fatigue lives for several tension hold-time tests. This is attributed to the fine duplex microstructure of the weld metal that inhibits the growth rate of cracks. Additional studies on the cyclic deformation behavior of the weld metal indicate that the material is strain-history dependent; therefore a unique stress-strain curve does not exist. Monotonic tension tests after cyclic straining result in a different stress-strain curve than obtained from companion fatigue tests at various completely reversed constant strain ranges. A comparison of the fracture morphology and creep-rupture specimens indicates that differences resulting from these tests can be attributed to different failure mechanisms.

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35 p. : ill., charts, tables

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Digitized from microfiche (1).

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  • August 1977

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  • Aug. 4, 2015, 8:33 a.m.

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Raske, D. T. Cyclic-Deformation Resistance of Weld-Deposited Type 16-8-2 Stainless Steel at 593 Degrees C, report, August 1977; Argonne, Illinois. (digital.library.unt.edu/ark:/67531/metadc283248/: accessed October 15, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.