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A Model for Predicting Weld Metal Grain Refinement in G-V Space

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Abstract

A model has been developed which allows for the graphical representation of undercooling and nucleation site density in G-V space (i.e. temperature gradient G versus growth rate V). This model is used to explain a unique grain structure in weldments where equiaxed grains may be found both at the fusion boundary and along the center of the weld metal. Details of this model will be given and discussed in relation to grain refinement predictions in G- V space.

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Authors and Affiliations

  1. Dept. of Materials Technology and Electrochemistry, Norwegian University of Science and Technology, N-7491, Trondheim, Norway

    Ø. Grong

  2. Metallurgical Eng. Dept., Montana Tech of the University of Montana, Butte, MT, 59701, USA

    C. E. Cross

Authors
  1. Ø. Grong
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  2. C. E. Cross
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Grong, Ø., Cross, C.E. A Model for Predicting Weld Metal Grain Refinement in G-V Space. MRS Online Proceedings Library 578, 431–438 (1999). https://doi.org/10.1557/PROC-578-431

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  • DOI: https://doi.org/10.1557/PROC-578-431

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