Solidification behavior and microstructural analysis of austenitic stainless steel laser welds

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Solidification behavior of austenitic stainless steel laser welds has been investigated with a high-power laser system. The welds were made at speeds ranging from 13 to 60 mm/s. The welds sowed a wide variety of microstructural features. The ferrite content in the 13-mm/s weld varied from less than 1% at the root of the weld to about 10% at the crown. The duplex structure at the crown of the weld was much finer than the one observed in conventional weld metal. However, the welds made at 25 and 60 mm/s contained an austenitic structure with less than 1% ferrite throughout ... continued below

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Pages: 8

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David, S.A. & Vitek, J.M. January 1, 1981.

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Description

Solidification behavior of austenitic stainless steel laser welds has been investigated with a high-power laser system. The welds were made at speeds ranging from 13 to 60 mm/s. The welds sowed a wide variety of microstructural features. The ferrite content in the 13-mm/s weld varied from less than 1% at the root of the weld to about 10% at the crown. The duplex structure at the crown of the weld was much finer than the one observed in conventional weld metal. However, the welds made at 25 and 60 mm/s contained an austenitic structure with less than 1% ferrite throughout the weld. Microstructural analysis of these welds used optical microscopy, transmission electron microscopy, and analytical electron microscopy. The austenitic stainless steel welds were free of any cracking, and the results are explained in terms of the rapid solidification conditions during laser welding.

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Pages: 8

Notes

NTIS, PC A02/MF A01.

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  • 110. annual meeting of the AIME, Chicago, IL, USA, 22 Feb 1981

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  • Report No.: CONF-810203-13
  • Grant Number: W-7405-ENG-26
  • Office of Scientific & Technical Information Report Number: 6420264
  • Archival Resource Key: ark:/67531/metadc1203587

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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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  • January 1, 1981

Added to The UNT Digital Library

  • July 5, 2018, 11:11 p.m.

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  • Oct. 26, 2018, 1:15 p.m.

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David, S.A. & Vitek, J.M. Solidification behavior and microstructural analysis of austenitic stainless steel laser welds, article, January 1, 1981; United States. (digital.library.unt.edu/ark:/67531/metadc1203587/: accessed December 14, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.