Implications of radiation-induced reductions in ductility to the design of austenitic stainless steel structures

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In the dose and temperature range anticipated for ITER, austenitic stainless steels exhibit significant hardening with a concomitant loss in work hardening and uniform elongation. However, significant post-necking ductility may still be retained. When uniform elongation (e{sub u}) is well defined in terms of a plastic instability criterion, e{sub u} is found to sustain reasonably high values out to about 7 dpa in the temperature range 250-350 C, beyond which it decreases to about 0.3% for 316LN. This loss of ductility has significant implications to fracture toughness and the onset of new failure modes associated with hear instability. However, the ... continued below

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16 p.

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Lucas, G.E.; Billone, M.; Pawel, J.E. & Hamilton, M.L. December 31, 1995.

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  • Lucas, G.E. California Univ., Santa Barbara, CA (United States)
  • Billone, M. Argonne National Lab., IL (United States)
  • Pawel, J.E. Oak Ridge National Lab., TN (United States)
  • Hamilton, M.L. Pacific Northwest Lab., Richland, WA (United States)

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In the dose and temperature range anticipated for ITER, austenitic stainless steels exhibit significant hardening with a concomitant loss in work hardening and uniform elongation. However, significant post-necking ductility may still be retained. When uniform elongation (e{sub u}) is well defined in terms of a plastic instability criterion, e{sub u} is found to sustain reasonably high values out to about 7 dpa in the temperature range 250-350 C, beyond which it decreases to about 0.3% for 316LN. This loss of ductility has significant implications to fracture toughness and the onset of new failure modes associated with hear instability. However, the retention of a significant reduction in area at failure following irradiation indicates a less severe degradation of low-cycle fatigue life in agreement with a limited amount of data obtained to date. Suggestions are made for incorporating these results into design criteria and future testing programs.

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16 p.

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INIS; OSTI as DE96014858

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  • 7. international school on neutron physics, Dubna (Russian Federation), 3-22 Sep 1995

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  • Other: DE96014858
  • Report No.: ANL/ET/CP--90216
  • Report No.: CONF-9509235--2
  • Grant Number: W-31109-ENG-38
  • Office of Scientific & Technical Information Report Number: 383041
  • Archival Resource Key: ark:/67531/metadc688961

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  • December 31, 1995

Added to The UNT Digital Library

  • July 25, 2015, 2:20 a.m.

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  • Dec. 16, 2015, 5:06 p.m.

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Lucas, G.E.; Billone, M.; Pawel, J.E. & Hamilton, M.L. Implications of radiation-induced reductions in ductility to the design of austenitic stainless steel structures, article, December 31, 1995; Illinois. (digital.library.unt.edu/ark:/67531/metadc688961/: accessed June 24, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.