| Issue |
E3S Web Conf.
Volume 155, 2020
2019 The 2nd International Symposium on Hydrogen Energy and Energy Technologies (HEET 2019)
|
|
|---|---|---|
| Article Number | 01005 | |
| Number of page(s) | 10 | |
| DOI | https://doi.org/10.1051/e3sconf/202015501005 | |
| Published online | 09 March 2020 | |
Formation and evolution of porosity during high temperature creep of a nickel-based single crystal superalloy
Science and Technology on Advanced High Temperature Structural Materials Laboratory, Beijing Institute of Aeronautical Materials, Beijing 100095, P.R. China
* Corresponding author: liuww_80@sina.com
A Re-containing single-crystal superalloy was used to research the high temperature low stress creep behavior. Transmission electron microscope, scanning electron microscope and some other research methods are employed. The results and analysis are summarized below: Two mechanisms for the steady creep are found in this experiment. The volume fraction of pores after creep test at 1100°C increased more than 2 times compared with that before test, but the increasing at 1000°C is relatively small, which reveals that temperature has an great influence on the formation of pore during creep; There are two types of pores associated with fracture during the creep process. One is the casting shrinkage located between the interdentritic, which is formed in the solidification of the alloy. Another type of pore is nucleated and growing during the creep deformation.
Key words: single crystal superalloy / creep / dislocation / porosity
© The Authors, published by EDP Sciences, 2020
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.