The effects of intermixed weld metal on mechanical properties. Part 1

Quintana, M A; Johnson, M Q

Title: The effects of intermixed weld metal on mechanical properties. Part 1

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Abstract

It is common for individual weld joints to be fabricated using a combination of electrode types and welding processes. While this situation arises most often as a result of repair welding, it also can arise due to scheduled fabrication sequencing, which requires a change from one electrode and/or process to another within the same weld joint. When weld metals deriving their properties from different metallurgical mechanisms are intermixed in the same joint, the resulting properties of the combination have caused some concern. This work is the first in a series that examines the intermixing of conventional carbon-manganese weld metals with various self-shielded flux cored arc weld metals. In this case, two different shielded metal arc weld metals are combined with various self-shielded flux cored arc weld metals. The effects of dilution from the underlying self-shielded flux cored root layers on the mechanical properties of shielded metal arc weld metal are examined. Variations in both tensile and Charpy V-notch impact properties have been documented. The effect on tensile results is limited to relatively minor changes in ductility. Reductions in Charpy V-notch impact energies were noted in all cases. The results are evaluated in terms of the chemical composition gradients and weldmore »« less

Authors:

Quintana, M A ^[1]; Johnson, M Q ^[2]

Lincoln Electric Co., Cleveland, OH (United States)
Edison Welding Inst., Columbus, OH (United States)

Publication Date:: Mon Mar 01 00:00:00 EST 1999

OSTI Identifier:: 334097

Resource Type:: Journal Article

Journal Name:: Welding Journal

Additional Journal Information:: Journal Volume: 78; Journal Issue: 3; Other Information: DN: Paper presented at the AWS annual meeting, April 13--17, 1997, Los Angeles, CA (US); PBD: Mar 1999

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; FILLER METALS; WELDED JOINTS; MECHANICAL PROPERTIES; MICROSTRUCTURE; REPAIR; ARC WELDING

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                    Quintana, M A, and Johnson, M Q. The effects of intermixed weld metal on mechanical properties. Part 1.  United States: N. p., 1999. 
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                    Quintana, M A, & Johnson, M Q. The effects of intermixed weld metal on mechanical properties. Part 1.  United States.

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                    Quintana, M A, and Johnson, M Q. 1999.  
        "The effects of intermixed weld metal on mechanical properties. Part 1".  United States.

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@article{osti_334097,

  title        = {The effects of intermixed weld metal on mechanical properties. Part 1},

  author       = {Quintana, M A and Johnson, M Q},

  abstractNote = {It is common for individual weld joints to be fabricated using a combination of electrode types and welding processes. While this situation arises most often as a result of repair welding, it also can arise due to scheduled fabrication sequencing, which requires a change from one electrode and/or process to another within the same weld joint. When weld metals deriving their properties from different metallurgical mechanisms are intermixed in the same joint, the resulting properties of the combination have caused some concern. This work is the first in a series that examines the intermixing of conventional carbon-manganese weld metals with various self-shielded flux cored arc weld metals. In this case, two different shielded metal arc weld metals are combined with various self-shielded flux cored arc weld metals. The effects of dilution from the underlying self-shielded flux cored root layers on the mechanical properties of shielded metal arc weld metal are examined. Variations in both tensile and Charpy V-notch impact properties have been documented. The effect on tensile results is limited to relatively minor changes in ductility. Reductions in Charpy V-notch impact energies were noted in all cases. The results are evaluated in terms of the chemical composition gradients and weld microstructure variations that result from dilution. Possible mechanisms are discussed.},

  doi          = {},

  url          = {https://www.osti.gov/biblio/334097},
  journal      = {Welding Journal},
number       = 3,

  volume       = 78,

  place        = {United States},

  year         = {Mon Mar 01 00:00:00 EST 1999},

  month        = {Mon Mar 01 00:00:00 EST 1999}

}

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