Strain localisation and failure at twin-boundary complexions in nickel-based superalloys

Coherent twin boundaries in nickel-based superalloys are vulnerable sites for alloy failure in demanding environments. Here, the authors show that the abnormal γ″ precipitation mechanism at twin boundaries is responsible for pronounced strain localisation and subsequent failure.

Bibliographic Details
Main Authors: Zhenbo Zhang, Zhibiao Yang, Song Lu, Allan Harte, Roberto Morana, Michael Preuss
Format: Article
Language:English
Published: Nature Publishing Group 2020-09-01
Series:Nature Communications
Online Access:https://doi.org/10.1038/s41467-020-18641-z
Description
Summary:Coherent twin boundaries in nickel-based superalloys are vulnerable sites for alloy failure in demanding environments. Here, the authors show that the abnormal γ″ precipitation mechanism at twin boundaries is responsible for pronounced strain localisation and subsequent failure.
ISSN:2041-1723