铸造2013，Vol.62Issue(7)：620-623,4.
镍基高温合金铸件中的双氧化膜缺陷分析
Analysis of Double Oxide Film Defects in Ni-Based Super-Alloy Castings
黄爱华 1黄国华 1王少刚 1崔树森 1郭伟杰 1于兴福2
作者信息
- 1. 沈阳黎明航空发动机(集团)有限责任公司,辽宁沈阳110043
- 2. 沈阳工业大学材料科学与工程学院,辽宁沈阳110870
- 折叠
摘要
Abstract
Double oxide film defect in the casting is a typical two-dimensional defect,of which area is in square millimeter level and the thickness is in micron level.It is not in the X-ray flaw detection range,nor in the ultrasonic testing range,the conventional test method is not easy to detect these defects.In this study a number of Ni-based vacuum cast test bars were investigated.The fractures of test bars were 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 fractures' surface.Observation by SEM revealed the presence of inclusions identified as films.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 remove these defects.关键词
双氧化膜/真空铸造/镍基高温合金Key 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
黄爱华,黄国华,王少刚,崔树森,郭伟杰,于兴福..镍基高温合金铸件中的双氧化膜缺陷分析[J].铸造,2013,62(7):620-623,4.
