Search for: All records | NSF Public Access

Note: When clicking on a Digital Object Identifier (DOI) number, you will be taken to an external site maintained by the publisher. Some full text articles may not yet be available without a charge during the embargo (administrative interval).
What is a DOI Number?

Some links on this page may take you to non-federal websites. Their policies may differ from this site.

Energy dissipation by grain boundary replacement during grain growth

https://doi.org/10.1016/j.scriptamat.2023.115405

Xu, Zipeng ; Hefferan, Christopher M. ; Li, Shiu Fai ; Lind, Jonathan ; Suter, Robert M. ; Abdeljawad, Fadi ; Rohrer, Gregory S. ( June 2023 , Scripta Materialia)

Full Text Available
Three-dimensional grain mapping of open-cell metallic foam by integrating synthetic data with experimental data from high-energy X-ray diffraction microscopy

https://doi.org/10.1016/j.matchar.2018.07.031

Plumb, Jayden C. ; Lind, Jonathan F. ; Tucker, Joseph C. ; Kelley, Ron ; Spear, Ashley D. ( October 2018 , Materials Characterization)

Full Text Available
Application of Al-Cu-W-Ta graded density impactors in dynamic ramp compression experiments

https://doi.org/10.1063/1.5055398

Kelly, James P. ; Nguyen, Jeffrey H. ; Lind, Jonathan ; Akin, Minta C. ; Fix, Brian J. ; Saw, Cheng K. ; White, Elida R. ; Greene, Waldi O. ; Asimow, Paul D. ; Haslam, Jeffery J. ( April 2019 , Journal of Applied Physics)

Full Text Available
Crystallographic character of grain boundaries resistant to hydrogen-assisted fracture in Ni-base alloy 725

https://doi.org/10.1038/s41467-018-05549-y

Hanson, John_P ; Bagri, Akbar ; Lind, Jonathan ; Kenesei, Peter ; Suter, Robert_M ; Gradečak, Silvija ; Demkowicz, Michael_J ( August 2018 , Nature Communications)

Abstract
Hydrogen embrittlement (HE) causes sudden, costly failures of metal components across a wide range of industries. Yet, despite over a century of research, the physical mechanisms of HE are too poorly understood to predict HE-induced failures with confidence. We use non-destructive, synchrotron-based techniques to investigate the relationship between the crystallographic character of grain boundaries and their susceptibility to hydrogen-assisted fracture in a nickel superalloy. Our data lead us to identify a class of grain boundaries with striking resistance to hydrogen-assisted crack propagation: boundaries with low-index planes (BLIPs). BLIPs are boundaries where at least one of the neighboring grains has a low Miller index facet—{001}, {011}, or {111}—along the grain boundary plane. These boundaries deflect propagating cracks, toughening the material and improving its HE resistance. Our finding paves the way to improved predictions of HE based on the density and distribution of BLIPs in metal microstructures.

more » « less