Fatigue cracking of coextruded 304L/CS tubes

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Description

The mechanical and thermal fatigue of authentic stainless steels was examined for the maximum temperature range expected in coextruded floor tubes of recovery boilers to determine the likelihood that the cracking in the 304L stainless steel cladding could be fatigue related. The microstructures and cracking patterns of fatigue-tested specimens were compared to features observed in cracked cladding and significant differences were found which suggested that fatigue was not the most likely cause for failure. Biaxial thermal fatigue testing of coextruded tubes and panels was performed to gather more evidence of cracking patterns. Here, transient thermal stresses were imposed by rapidly ... continued below

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7 p.

Creation Information

Swindeman, R.W.; Keiser, J.R.; Maziasz, P.J. & Singbeil, D.L. March 1, 1998.

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Description

The mechanical and thermal fatigue of authentic stainless steels was examined for the maximum temperature range expected in coextruded floor tubes of recovery boilers to determine the likelihood that the cracking in the 304L stainless steel cladding could be fatigue related. The microstructures and cracking patterns of fatigue-tested specimens were compared to features observed in cracked cladding and significant differences were found which suggested that fatigue was not the most likely cause for failure. Biaxial thermal fatigue testing of coextruded tubes and panels was performed to gather more evidence of cracking patterns. Here, transient thermal stresses were imposed by rapidly heating the tubing surface with lamps. In spite of high surface temperatures, no cracks were produced in the 304L stainless steel cladding, and this observation was interpreted as evidence that cracking must be corrosion related.

Physical Description

7 p.

Notes

OSTI as DE98004887

Source

  • 9. international symposium on corrosion in the pulp and paper industry, Ottawa (Canada), 26-29 May 1998

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  • Other: DE98004887
  • Report No.: ORNL/CP--97557
  • Report No.: CONF-980555--
  • Grant Number: AC05-96OR22464
  • DOI: 10.2172/672022 | External Link
  • Office of Scientific & Technical Information Report Number: 672022
  • Archival Resource Key: ark:/67531/metadc708740

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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Creation Date

  • March 1, 1998

Added to The UNT Digital Library

  • Sept. 12, 2015, 6:31 a.m.

Description Last Updated

  • Nov. 3, 2016, 6:58 p.m.

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Swindeman, R.W.; Keiser, J.R.; Maziasz, P.J. & Singbeil, D.L. Fatigue cracking of coextruded 304L/CS tubes, report, March 1, 1998; Tennessee. (digital.library.unt.edu/ark:/67531/metadc708740/: accessed October 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.