@inproceedings{d1f1f93c226d489a87a220a4c9040e06,
title = "Effect of Pre-straining on the Tensile and Stress-Rupture Properties of a Novel Ni-Co Based Superalloy",
abstract = "For Ni-Co-based superalloys, the higher level of Co content, the lower the stacking fault energy, which promotes the formation of deformation twins and affects the mechanical properties of the materials. Mechanical tests of a novel Ni-Co-based superalloy at temperatures between 25 and 760 ℃ revealed that its strength maintained a sufficiently high level when the testing temperature was up to 650 ℃, above which the tensile strength decreased with test temperature, and there was a sharp drop at 760 ℃. Pre-strain tests at room temperature indicated that the density of dislocation and stacking faults increased with strains and they became obstacles for dislocation motion at elevated temperatures, resulting in an increase in yield strength. In addition, the grain boundary of the pre-strained specimens has a higher dislocation density than the grain interior, and dislocation recovery occurred during the stress-rupture process, resulting in a lower stress-rupture life than the sample without a pre-strain.",
keywords = "Nanotwins, Ni-Co based superalloys, Pre-straining, Stress-rupture, Tensile tests",
author = "Bin Gan and Zhongnan Bi and Cheng Yang and Hongyao Yu and Rui Hu and Jinhui Du",
note = "Publisher Copyright: {\textcopyright} 2023, The Minerals, Metals & Materials Society.; 10th International Symposium on Superalloy 718 and Derivatives, 2023 ; Conference date: 19-03-2023 Through 23-03-2023",
year = "2023",
doi = "10.1007/978-3-031-27447-3_12",
language = "英语",
isbn = "9783031274466",
series = "Minerals, Metals and Materials Series",
publisher = "Springer Science and Business Media Deutschland GmbH",
pages = "179--195",
editor = "Ott, {Eric A.} and Joel Andersson and Chantal Sudbrack and Zhongnan Bi and Kevin Bockenstedt and Ian Dempster and Michael Fahrmann and Paul Jablonski and Michael Kirka and Xingbo Liu and Daisuke Nagahama and Tim Smith and Martin Stockinger and Andrew Wessman",
booktitle = "Proceedings of the 10th International Symposium on Superalloy 718 and Derivatives, 2023",
}