Hybrid Additive Manufacturing of Island Grain Bicrystals

L. G. Ware, B. S. Herstein, Y. Zhang, H. Z. Bilheux, Z. C. Cordero

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

We demonstrate cylindrical island grain bicrystals grown via a hybrid additive manufacturing/directional solidification technique. The island grain bicrystal is formed using a specialized mold in which one grain (the island) is enveloped by another larger grain (the surrounding matrix). The grain boundary plane orientation varies continuously around the circumference of the island grain, making these specimens ideal for probing grain boundary structure–property relations. We report thermal groove angle measurements along the grain boundary in a tin island grain bicrystal which show the grain boundary energy as a function of a single degree of freedom in the five-dimensional grain boundary parameter space.

Original languageEnglish
Title of host publicationTMS 2022 151st Annual Meeting and Exhibition Supplemental Proceedings
PublisherSpringer Science and Business Media Deutschland GmbH
Pages1033-1043
Number of pages11
ISBN (Print)9783030923808
DOIs
StatePublished - 2022
Event151st Annual Meeting and Exhibition of The Minerals, Metals and Materials Society, TMS 2022 - Anaheim, United States
Duration: Feb 27 2022Mar 3 2022

Publication series

NameMinerals, Metals and Materials Series
ISSN (Print)2367-1181
ISSN (Electronic)2367-1696

Conference

Conference151st Annual Meeting and Exhibition of The Minerals, Metals and Materials Society, TMS 2022
Country/TerritoryUnited States
CityAnaheim
Period02/27/2203/3/22

Funding

This work was supported by the George R. Brown School of Engineering at Rice University. A portion of the research used resources at the Spallation Neutron Source, a DOE Office of Science User Facility operated by the Oak Ridge National Laboratory. The authors would like to thank Baker Hughes for providing optical profilometry facilities. The authors would also like to thank Professor Srikanth Patala for his help determining the misorientation point group, as well as for his suggestions and comments.

FundersFunder number
George R. Brown School of Engineering
Office of Science
Oak Ridge National Laboratory
Rice University

    Keywords

    • Additive manufacturing
    • Crystal growth
    • Directional solidification
    • Grain boundaries

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