Weldability of polycrystalline aluminides. Final report Metadata

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Title

  • Main Title Weldability of polycrystalline aluminides. Final report

Creator

  • Author: Fasching, A.A.
    Creator Type: Personal
  • Author: Burt, R.P.
    Creator Type: Personal
  • Author: Edwards, G.R.
    Creator Type: Personal
  • Author: David, S.A.
    Creator Type: Personal

Contributor

  • Sponsor: United States. Department of Energy.
    Contributor Type: Organization
    Contributor Info: USDOE, Washington, DC (United States)

Publisher

  • Name: Oak Ridge National Laboratory
    Place of Publication: Tennessee
    Additional Info: Oak Ridge National Lab., TN (United States)
  • Name: Colorado School of Mines. Center for Welding and Joining Research.
    Place of Publication: Golden, Colorado
    Additional Info: Colorado School of Mines, Golden, CO (United States). Center for Welding and Joining Research

Date

  • Creation: 1996-07

Language

  • English

Description

  • Content Description: When gas-tungsten arc welded, iron aluminides form a coarse fusion zone microstructure which is susceptible to hydrogen cracking. Magnetic arc oscillation and weld pool inoculation were implemented to refine the fusion zone microstructure in iron aluminide alloy FA-129 weldments. Magnetic arc oscillation effectively refined the fusion zone microstructure, and slow strain rate tensile tests showed fine-grained microstructures to be less susceptible to hydrogen cracking. However, magnetic arc oscillation was found to be suitable only for well-controlled fabrication environments. Weld pool inoculation offers a potentially more robust refinement method. Titanium inoculation was also shown to effectively refined the fusion zone microstructure, but weldment properties were not improved using this refinement method. The effect of titanium on the size, shape and distribution of the second phase particles in the fusion zone appears to be the cause of the observed decrease in weldment properties.
  • Physical Description: 60 p.

Subject

  • Keyword: Corrosion
  • Keyword: Tensile Properties
  • Keyword: Cracks
  • Keyword: Intermetallic Compounds
  • Keyword: Metallurgical Effects
  • Keyword: Welded Joints
  • STI Subject Categories: 36 Materials Science
  • Keyword: Weldability
  • Keyword: Titanium
  • Keyword: Grain Refinement
  • Keyword: Strain Rate
  • Keyword: Aluminium Alloys
  • Keyword: Microstructure
  • Keyword: Iron Alloys

Source

  • Other Information: PBD: Jul 1996

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Report

Format

  • Text

Identifier

  • Other: DE96012437
  • Report No.: ORNL/Sub--85-27421/08
  • Report No.: CWJCR--096-015
  • Grant Number: AC05-96OR22464
  • DOI: 10.2172/255017
  • Office of Scientific & Technical Information Report Number: 255017
  • Archival Resource Key: ark:/67531/metadc665399

Note

  • Display Note: OSTI as DE96012437
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