Evaluation of oxide dispersion strengthened (ODS) molybdenum and molybdenum-rhenium Alloys

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Oxide dispersion strengthened (ODS) molybdenum alloys being developed for high temperature applications possess excellent high temperature strength and creep resistance. In addition they exhibit a ductile-to-brittle transition temperature (DBIT) in the worked and stress-relieved condition under longitudinal tensile load well below room temperature. However, in the recrystallized condition, the DBTT maybe near or above room temperature, depending on the volume fraction of oxide dispersion and the amount of prior work. Dilute rhenium additions (7 and 14 wt.%) to ODS molybdenum were evaluated to determine their effect on low temperature ductility. The addition of 7 wt.% rhenium to the ODS molybdenum ... continued below

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18 p.

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Mueller, A.J.; Bianco, R. & Buckman, R.W. Jr. October 22, 1999.

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This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 18 times , with 4 in the last month . More information about this article can be viewed below.

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  • Bettis Atomic Power Laboratory
    Publisher Info: Bettis Atomic Power Lab., West Mifflin, PA (United States)
    Place of Publication: West Mifflin, Pennsylvania

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Description

Oxide dispersion strengthened (ODS) molybdenum alloys being developed for high temperature applications possess excellent high temperature strength and creep resistance. In addition they exhibit a ductile-to-brittle transition temperature (DBIT) in the worked and stress-relieved condition under longitudinal tensile load well below room temperature. However, in the recrystallized condition, the DBTT maybe near or above room temperature, depending on the volume fraction of oxide dispersion and the amount of prior work. Dilute rhenium additions (7 and 14 wt.%) to ODS molybdenum were evaluated to determine their effect on low temperature ductility. The addition of 7 wt.% rhenium to the ODS molybdenum did not significantly enhance the mechanical properties. However, the addition of 14 wt.% rhenium to the ODS molybdenum resulted in a DBTT well below room temperature in both the stress-relieved and recrystallized condition. Additionally, the tensile strength of ODS Mo-14Re is greater than the base ODS molybdenum at 1,000 to 1,250 C.

Physical Description

18 p.

Notes

INIS; OSTI as DE00754894

Medium: P; Size: 18 pages

Source

  • 1999 TMS Fall Meeting: Symposium on Research Development and Applications of Refractory Alloys, Cincinnati, OH (US), 11/02/1999

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  • Report No.: B-T-3148
  • Grant Number: AC11-98PN38206
  • Office of Scientific & Technical Information Report Number: 754894
  • Archival Resource Key: ark:/67531/metadc711859

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  • October 22, 1999

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  • Sept. 12, 2015, 6:31 a.m.

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  • April 7, 2017, 4:07 p.m.

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Mueller, A.J.; Bianco, R. & Buckman, R.W. Jr. Evaluation of oxide dispersion strengthened (ODS) molybdenum and molybdenum-rhenium Alloys, article, October 22, 1999; West Mifflin, Pennsylvania. (digital.library.unt.edu/ark:/67531/metadc711859/: accessed September 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.