Improved swelling resistance for PCA austenitic stainless steel under HFIR irradiation through microstructural control

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Six microstructural variants of Prime Candidate Alloy (PCA) were evaluated for swelling resistance during HFIR irradiation, together with several heats of type 316 stainless steel (316). Swelling was negligible in all the steels at 300/sup 0/C after approx. 44 dpa. At 500 to 600/sup 0/C 25%-cold-worked PCA showed better void swelling resistance than type 316 at approx. 44 dpa. There was less swelling variability among alloys at 400/sup 0/C, but again 25%-cold-worked PCA was the best. Microstructurally, swelling resistance correlated with development of fine, stable bubbles whereas high swelling was due to coarser distributions of bubbles becoming unstable and converting ... continued below

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Pages: 7

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Maziasz, P.J. & Braski, D.N. January 1, 1983.

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Six microstructural variants of Prime Candidate Alloy (PCA) were evaluated for swelling resistance during HFIR irradiation, together with several heats of type 316 stainless steel (316). Swelling was negligible in all the steels at 300/sup 0/C after approx. 44 dpa. At 500 to 600/sup 0/C 25%-cold-worked PCA showed better void swelling resistance than type 316 at approx. 44 dpa. There was less swelling variability among alloys at 400/sup 0/C, but again 25%-cold-worked PCA was the best. Microstructurally, swelling resistance correlated with development of fine, stable bubbles whereas high swelling was due to coarser distributions of bubbles becoming unstable and converting to voids (bias-driven cavities).

Physical Description

Pages: 7

Notes

NTIS, PC A02/MF A01; 1.

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  • 3. topical meeting on fusion reactor materials, Albuquerque, NM, USA, 19 Sep 1983

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  • Other: DE84003203
  • Report No.: CONF-830942-65
  • Grant Number: W-7405-ENG-26
  • Office of Scientific & Technical Information Report Number: 5434799
  • Archival Resource Key: ark:/67531/metadc1069317

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  • January 1, 1983

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  • Feb. 4, 2018, 10:51 a.m.

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  • March 29, 2018, 12:59 p.m.

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Maziasz, P.J. & Braski, D.N. Improved swelling resistance for PCA austenitic stainless steel under HFIR irradiation through microstructural control, article, January 1, 1983; Tennessee. (digital.library.unt.edu/ark:/67531/metadc1069317/: accessed October 15, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.