Study of fractal characteristics of fatigued fracture surfaces at elevated temperature in Zircaloy-4 by secondary electron line scanning Xiao, L., Gu, H.C. and Kuang, Z.B. Xiyou Jinshu Cailiao yu Gongcheng (Rare Metal Mater. Engng) (1995) 24 (2), 22–26

1997 ◽  
Vol 19 (4) ◽  
pp. 353
Keyword(s):  
Elevated Temperature ◽  
Secondary Electron ◽  
Rare Metal ◽  
Fracture Surfaces ◽  
Electron Line ◽  
Fractal Characteristics ◽  
Line Scanning

The Solidified Structure and Macrosegregation of Wedge-Shaped Titanium Castings Produced by Vertical Centrifugal Casting Process

2011 ◽  
Vol 317-319 ◽  
pp. 456-459 ◽  
Author(s):  
Shi Ping Wu ◽  
Qin Xu ◽  
Xiang Xue
Keyword(s):  
Rotational Speed ◽  
Secondary Electron ◽  
Centrifugal Casting ◽  
Casting Process ◽  
Alloy Element ◽  
Grain Sizes ◽  
Electron Line ◽  
Wedge Shape ◽  
Line Scanning ◽  
Scanning Electron

The present paper studied the as-cast structure and macrosegregation of the wedge-shaped castings produced vertical centrifugal casting process at different mould rotating speeds. The element distributions were determined by the secondary electron line scanning in the S-570SEM type scanning electron microscope (SEM) and the grain sizes of the castings were observed by the optical stereoscope. The research results show that the grain sizes increase with increasing of casting wall-thickness, but decrease with increasing of the mold rotational speed. The cooling rate is high and rotational speed is not high enough, therefore, there is slightly macrosegregation trend for the alloy element of Al and V in the wedge-shape castings.

Sign in / Sign up

Export Citation Format

Share Document