Anisotropic grain boundary area and energy distributions in tungsten

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Strategic Research Themes

Innovative Materials, Manufacturing and Construction (Strategic Research Themes)

Publication Details

Author list: Ooraphan Chirayutthanasak, Rajchawit Sarochawikasit, Apiwat Wisitsorasak, Nopporn Rujisamphan, Sutatch Ratanaphan, Timofey Frolov, Tomas Oppelstrup, Somsak Dangtip, Gregory S.Rohrerg,

Publisher: Elsevier

Publication year: 2022

Volume number: 209

ISSN: 1359-6462

URL: https://www.sciencedirect.com/science/article/abs/pii/S1359646221006643?via%3Dihub

Languages: English-United States (EN-US)

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Abstract

Describing microstructure evolution in tungsten requires a quantitative description of the anisotropic grain boundary energy. We present a grain boundary energy function for tungsten that specifies the en- ergy of an arbitrary boundary given its five macroscopic crystallographic parameters. A comparison of measured grain boundary areas and the grain boundary energies given by the function at the 􏲆11, 􏲆17b, and 􏲆33a misorientations, which are problematic to determine by measurement or atomistic calculations, reveals inverse correlations that are similar to what have been observed in other metals.

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