A new approach to the analysis of grain refinement

St John, David H., Easton, Mark A., Cao, Peng and Qian, Ma (2007). A new approach to the analysis of grain refinement. In: Howard Jones, Solidification processing 2007: SP07: Proceedings of the 5th Decennial International Conference on Solidification Processing. 5th Decennial International Conference on Solidification Processing, Sheffield, United Kingdom, (99-103). 23-25 July 2007.

Author St John, David H.
Easton, Mark A.
Cao, Peng
Qian, Ma
Title of paper A new approach to the analysis of grain refinement
Conference name 5th Decennial International Conference on Solidification Processing
Conference location Sheffield, United Kingdom
Conference dates 23-25 July 2007
Proceedings title Solidification processing 2007: SP07: Proceedings of the 5th Decennial International Conference on Solidification Processing
Place of Publication Sheffield, U.K.
Publisher Department of Engineering Materials, University of Sheffield
Publication Year 2007
Year available 2007
Sub-type Fully published paper
ISBN 9780952250746
0952250748
Editor Howard Jones
Start page 99
End page 103
Total pages 5
Collection year 2008
Language eng
Formatted Abstract/Summary
Grain refinement of aluminium and magnesium alloys has been a challenging topic for decades and this is partly due to the complex nature of the mechanisms occurring during solidification and the lack of a common experimental method allowing comparison of data from different research groups. A new analytical approach that plots grain size versus the inverse of the growth restriction factor Q enables additional valuable information to be revealed about the efficiency and potency of grain refiner particles and master alloys. The present paper describes the new analytical approach and then gives examples where insights into the grain refinement mechanisms have been achieved. For aluminium alloys, the new analytical approach compares the effectiveness of different master alloys and examines the mechanism of poisoning of grain refinement by Zr. For magnesium alloys, the new analytical approach is applied to explain phenomena such as superheating and native grain refinement. With this new analytical approach and the knowledge it generates, the potential for the discovery of new or improved refiners is significantly enhanced.
Subjects 671000 Fabricated Metal Products
E1
0912 Materials Engineering
Q-Index Code E1
Q-Index Status Confirmed Code
Additional Notes Selected papers from the conference held at the University of Sheffield.

 
Versions
Version Filter Type
Citation counts: Google Scholar Search Google Scholar
Created: Thu, 15 May 2008, 15:27:18 EST by Sally Beard on behalf of Faculty Of Engineering, Architecture & Info Tech