中国铸造2008，Vol.5Issue(1)：16-19,4.
Double oxide film defects in Ni-based super-alloy castings
Double oxide film defects in Ni-based super-alloy castings
Huang Aihua 1Cui Shusen 1Lou Yanchun2
作者信息
- 1. Shenyang Liming Aero-Engine Group Corp. Ltd., Shenyang 110043, P. R. China
- 2. Shenyang Research Institute of Foundry,Shenyang 110022, P. R. China
- 折叠
摘要
Abstract
A new class of defects has been recently discovered, which are regarded as double oxide film defects.In this study, a number of Ni-based vacuum-cast test bars were investigated. The fractures in the broken test barswere observed by Scanning Electron Microscopy (SEM). Energy Dispersive Spectroscopy (EDS), as well as Wavelength Dispersive Spectroscopy (WDS) were used to characterize the chemical elements of the fracture's surface. Observation by SEM revealed the presence of inclusions identified as films that appeared to have initiated the growth of carbides. This study has added to the evidence that oxide film defects do exist in Ni-based super-alloy in certain vacuum casting conditions. It provides a reference for researchers' further study on the defects, and provides a possible direction for researchers to improve casting technology so as to remove these defects.关键词
double oxide film/ vacuum casting/ Ni-based super-alloyKey words
double oxide film/ vacuum casting/ Ni-based super-alloy分类
矿业与冶金引用本文复制引用
Huang Aihua,Cui Shusen,Lou Yanchun..Double oxide film defects in Ni-based super-alloy castings[J].中国铸造,2008,5(1):16-19,4.
