Issue |
MATEC Web Conf.
Volume 67, 2016
International Symposium on Materials Application and Engineering (SMAE 2016)
|
|
---|---|---|
Article Number | 05016 | |
Number of page(s) | 5 | |
Section | Chapter 5 Metallurgical Engineering | |
DOI | https://doi.org/10.1051/matecconf/20166705016 | |
Published online | 29 July 2016 |
Surface Characterization of DD6 Single Crystal Superalloy during Acid Etching at Different Temperatures
Science and Technology on Advanced High Temperature Structural Materials Laboratory, Beijing Institute of Aeronautical Materials, Beijing 100095, China
a hulijie20031@163.com
b jirong.li@biam.ac.cn
c mei.han@biam.ac.cn
d shizhong.liu@biam.ac.cn
* Corresponding author: hulijie20031@163.com
An experimental study was carried out to investigate the effect of acid etching on surface integrity of a single crystal nickelbased superalloy. The corrosion tests were conducted in solution of hydrochloric acid and hydrogen peroxide at different reaction temperatures. The corroded specimens were characterized by scanning electron microscopy, weight loss measurements and surface roughness measuring instrument. The results indicate that DD6 suffers serious selective corrosion at cold bath temperature due to unduly slow etching when immersed for the maximum time. It is found that preferential dissolution of γ′ phase occurred, leading to the increase of surface roughness.
© The Authors, published by EDP Sciences, 2016
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.