Laser Wire Deposition (WireFeed) for Fully Dense Shapes LDRD

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Description

Direct metal deposition technologies produce complex, near net shape components from Computer Aided Design (CAD) solid models. Most of these techniques fabricate a component by melting powder in a laser weld pool, rastering the weld bead to form a layer, and additively constructing subsequent layers. This report will describe anew direct metal deposition process, known as WireFeed, whereby a small diameter wire is used instead of powder as the feed material to fabricate components. Currently, parts are being fabricated from stainless steel alloys. Microscopy studies show the WireFeed parts to be filly dense with fine microstructural features. Mechanical tests show ... continued below

Physical Description

26 p.

Creation Information

GRIFFITH,MICHELLE L.; ENSZ,MARK T.; GREENE,DONALD L.; RECKAWAY,DARYL E.; MORIN,JACOB A.; BUCHHEIT,THOMAS E. et al. November 1, 1999.

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This report 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 67 times . More information about this report can be viewed below.

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  • Sandia National Laboratories
    Publisher Info: Sandia National Labs., Albuquerque, NM, and Livermore, CA (United States)
    Place of Publication: Albuquerque, New Mexico

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Description

Direct metal deposition technologies produce complex, near net shape components from Computer Aided Design (CAD) solid models. Most of these techniques fabricate a component by melting powder in a laser weld pool, rastering the weld bead to form a layer, and additively constructing subsequent layers. This report will describe anew direct metal deposition process, known as WireFeed, whereby a small diameter wire is used instead of powder as the feed material to fabricate components. Currently, parts are being fabricated from stainless steel alloys. Microscopy studies show the WireFeed parts to be filly dense with fine microstructural features. Mechanical tests show stainless steel parts to have high strength values with retained ductility. A model was developed to simulate the microstructural evolution and coarsening during the WireFeed process. Simulations demonstrate the importance of knowing the temperature distribution during fabrication of a WireFeed part. The temperature distribution influences microstructural evolution and, therefore, must be controlled to tailor the microstructure for optimal performance.

Physical Description

26 p.

Notes

OSTI as DE00015149

Medium: P; Size: 26 pages

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  • Other Information: PBD: 1 Nov 1999

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  • Report No.: SAND99-2802
  • Grant Number: AC04-($AL85000
  • DOI: 10.2172/15149 | External Link
  • Office of Scientific & Technical Information Report Number: 15149
  • Archival Resource Key: ark:/67531/metadc625073

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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.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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Creation Date

  • November 1, 1999

Added to The UNT Digital Library

  • June 16, 2015, 7:43 a.m.

Description Last Updated

  • April 10, 2017, 6:27 p.m.

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GRIFFITH,MICHELLE L.; ENSZ,MARK T.; GREENE,DONALD L.; RECKAWAY,DARYL E.; MORIN,JACOB A.; BUCHHEIT,THOMAS E. et al. Laser Wire Deposition (WireFeed) for Fully Dense Shapes LDRD, report, November 1, 1999; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc625073/: accessed July 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.