@article{8c33035b706f42559d986fcf29b8409f,
title = "Solidification cracking of a nickel alloy during high-power keyhole mode laser welding",
abstract = "Nickel alloy Inconel 740H, a candidate material for use in ultra-supercritical power plants, is susceptible to solidification cracking during high power deep penetration laser welding. Here we examine how cracking is affected by welding variables and determine the locations where the cracks occur experimentally and theoretically. We use a solidification cracking model to calculate the effects of welding variables on cracking and the locations where the cracks form during high power laser keyhole mode welding of IN 740H. The parameters needed for the cracking model are obtained from a well-tested numerical heat transfer and fluid flow model for keyhole-mode welding. Model predictions of cracking and their locations for different welding conditions are verified by experiments.",
author = "B. Mondal and M. Gao and Palmer, {T. A.} and T. DebRoy",
note = "Funding Information: The Inconel 740H plate material used in the welding experiments was provided by Dr. T.M. Lillo at the Idaho National laboratory. Dr. Lillo also provided many helpful discussions that contributed to the analysis. We also thank Dr. J.S. Zuback for his help with the Scheil calculations of IN 740H. Computations for this research were performed on the Pennsylvania State University{\textquoteright}s Institute for Computational and Data Sciences{\textquoteright} Roar supercomputer. This manuscript has in part been authored by Battelle Energy Alliance, LLC under Contract No. DE-AC07–05ID14517 with the U.S. Department of Energy under Award Number FWP-B100–19010. The United States Government retains and the publisher, by accepting the paper for publication, acknowledges that the United States Government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes. Funding Information: The Inconel 740H plate material used in the welding experiments was provided by Dr. T.M. Lillo at the Idaho National laboratory. Dr. Lillo also provided many helpful discussions that contributed to the analysis. We also thank Dr. J.S. Zuback for his help with the Scheil calculations of IN 740H. Computations for this research were performed on the Pennsylvania State University's Institute for Computational and Data Sciences? Roar supercomputer. This manuscript has in part been authored by Battelle Energy Alliance, LLC under Contract No. DE-AC07?05ID14517 with the U.S. Department of Energy under Award Number FWP-B100?19010. The United States Government retains and the publisher, by accepting the paper for publication, acknowledges that the United States Government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes. B Mondal: Conceptualization, Formal analysis, Investigations, Data curation, Software, Writing ? original draft, review & editing. M Gao: Investigations. T A Palmer: Conceptualization, Supervision, Writing ? review & editing. T DebRoy: Conceptualization, Methodology, Supervision, Writing ? review and editing. Publisher Copyright: {\textcopyright} 2022 Elsevier B.V.",
year = "2022",
month = jul,
doi = "10.1016/j.jmatprotec.2022.117576",
language = "English (US)",
volume = "305",
journal = "Journal of Materials Processing Technology",
issn = "0924-0136",
publisher = "Elsevier BV",
}