Zirconium alloying and grain refinement of magnesium alloys

Qian, Ma, StJohn, D. H. and Frost, M. T. (2003). Zirconium alloying and grain refinement of magnesium alloys. In: Howard I. Kaplan, Magnesium Technology 2003: Proceedings of the jointly sponsored by the Magnesium Committee of the Light Metals Division (LMD) and the Solidification Committee of the Materials Processing and Manufacturing Division of TMS with the International Magnesium Association held during the 2003 TMS Annual Meeting. Magnesium Technology 2003, San Diego, California, USA, (209-214). 2-6 March 2003.


Author Qian, Ma
StJohn, D. H.
Frost, M. T.
Title of paper Zirconium alloying and grain refinement of magnesium alloys
Conference name Magnesium Technology 2003
Conference location San Diego, California, USA
Conference dates 2-6 March 2003
Proceedings title Magnesium Technology 2003: Proceedings of the jointly sponsored by the Magnesium Committee of the Light Metals Division (LMD) and the Solidification Committee of the Materials Processing and Manufacturing Division of TMS with the International Magnesium Association held during the 2003 TMS Annual Meeting
Journal name Magnesium Technology 2003
Place of Publication Warrendale, Pa. USA
Publisher The Minerals, Metals & Materials Society
Publication Year 2003
Sub-type Fully published paper
ISBN 0873395336
Editor Howard I. Kaplan
Volume 2003
Start page 209
End page 214
Total pages 6
Collection year 2003
Language eng
Abstract/Summary Factors that influence alloying zirconium to magnesium with a Mg-33.3Zr master alloy and the subsequent grain refinement are discussed based on a large number of experiments conducted at the laboratory scale (up to 30 kg of melt). It is shown that the zirconium particles released from the Zirmax(R) master alloy must be brought into thorough contact with the melt by an appropriate stirring process in order to attain a good dissolution of zirconium. The influence of alloying temperature on the recovery of zirconium was found to be negligible in the range from 680 to 780 degreesC. An ideal zirconium alloying process should end up with both high soluble and high total zirconium in the melt in order to achieve the best grain refinement in the final alloy. The distribution of zirconium in the final alloy microstructure is inhomogeneous and almost all of the zirconium in solution is concentrated in zirconium-rich cores in the microstructure.
Subjects E1
291400 Materials Engineering
671101 Automotive equipment
Q-Index Code E1
Additional Notes Held during the 2003 TMS Annual Meeting in San Diego, California, U.S.A., March 2-6, 2003.

 
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Created: Fri, 24 Aug 2007, 12:57:09 EST