Hydrogen-induced cleavage fracture of type 304L austenitic stainless steel

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Type 304L stainless steel supersaturated with hydrogen gas fails in tension at 200 to 250/sup 0/K by brittle fracture. Fracture surfaces exhibit isolated facets oriented 0 to 30/sup 0/ to the tensile axis and have characteristics of cleavage fracture. The threefold symmetry of Laue back reflection photographs and trace analysis of deformation bands on the facets demonstrate that cleavage is along (111) planes. The fracture paths were identified as coherent twin boundaries on polished sections through facets and on microcracks across interior grains. Although cleavage fracture is not commonly observed in alloys with a face-centered cubic (FCC) lattice, these observations ... continued below

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Pages: 21

Creation Information

Caskey, G.R. Jr. January 1, 1979.

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  • Savannah River Laboratory
    Publisher Info: Du Pont de Nemours (E.I.) and Co., Aiken, SC (USA). Savannah River Lab.
    Place of Publication: Aiken, South Carolina

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Description

Type 304L stainless steel supersaturated with hydrogen gas fails in tension at 200 to 250/sup 0/K by brittle fracture. Fracture surfaces exhibit isolated facets oriented 0 to 30/sup 0/ to the tensile axis and have characteristics of cleavage fracture. The threefold symmetry of Laue back reflection photographs and trace analysis of deformation bands on the facets demonstrate that cleavage is along (111) planes. The fracture paths were identified as coherent twin boundaries on polished sections through facets and on microcracks across interior grains. Although cleavage fracture is not commonly observed in alloys with a face-centered cubic (FCC) lattice, these observations for Type 304L stainless steel and similar observations on Nitronic-40 and Tenelon demonstrate that cleavage is possible under some circumstances in austenitic steels.

Physical Description

Pages: 21

Notes

Dep. NTIS, PC A02/MF A01.

Source

  • Symposium on fractography and materials science, Williamsburg, VA, USA, 27 Nov 1979

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  • Report No.: DP-MS-79-24
  • Report No.: CONF-791115-1
  • Grant Number: EY-76-C-09-0001
  • Office of Scientific & Technical Information Report Number: 5800251
  • Archival Resource Key: ark:/67531/metadc1102661

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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

  • January 1, 1979

Added to The UNT Digital Library

  • Feb. 18, 2018, 3:59 p.m.

Description Last Updated

  • May 10, 2018, 9:23 p.m.

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Caskey, G.R. Jr. Hydrogen-induced cleavage fracture of type 304L austenitic stainless steel, article, January 1, 1979; Aiken, South Carolina. (digital.library.unt.edu/ark:/67531/metadc1102661/: accessed August 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.