Improving the strength and ductility of magnesium die-casting alloys via rare-earth addition
Rent the article at a discountRent now
* Final gross prices may vary according to local VAT.Get Access
The development of new die-casting alloys is a multifaceted task, where success depends upon the ability to control a chain of properties, and where the weakest link determines the outcome. Optimizing one property by alloying often comes at the expense of one or more other properties. A typical example is yield strength vs. ductility. In developing alloys for high-pressure die casting, the peculiar aspects of the process must be considered. High injection speeds, high metal pressures, and the lack of efficient thermal barriers lead to extremely high cooling rates. This makes high-pressure die casting unique since the resulting refined microstructure provides excellent mechanical properties. In this article, the influence of alloy composition on mechanical properties is investigated, with special emphasis on strength and ductility.
- R.L. Edgar, “Global Overview on Demand and Applications for Magnesium Alloys,” Magnesium Alloys and Their Applications, ed. K.U. Kainer (Weinheim, Germany: Wiley VCH Verlag Gmbh, 2000), pp. 3–8.
- K. Pettersen, P. Bakke, and D. Albright, “Magnesium Die Casting Alloy Design,” Magnesium Technology 2002, ed. H.I. Kaplan (Warrendale, PA: TMS, 2002), pp. 241–246.
- H. Gjestland, S. Sannes, and H. Westengen, “High Pressure Die Casting—Getting the Best out of Magnesium” (Paper presented at the 10th Mg Automotive and End User Seminar, Aalen, Germany, September 2002).
- S. Sannes and H. Westengen, “The Influence of Process Conditions on the Microstructure and Mechanical Properties of Magnesium Die Castings,” Magnesium Alloys and their Applications, ed. K.U. Kainer (Weinheim, Germany: Wiley-VCH, 1998), pp. 223–229.
- P. Bakke et al., “The Impact of Metal Cleanliness on Mechanical Properties of Die Cast Magnesium Alloy AM50,” Magnesium Alloys and Their Applications, ed. K.U. Kainer (Weinheim, Germany: Wiley-VCH, 2000), pp. 739–745. CrossRef
- M.W. Dierks, C. Kuhn, and J. Etling, “Enhanced Mechanical Properties of Die Cast AM Series Magnesium; through Part Design, Die Design and Process Control,” SAE Technical Paper 940410 (Warrendale, PA: SAE, 1994).
- O. Holta, J. Røen, and H. Westengen, “High Purity Magnesium Die Casting Alloys: Impact of Metallurgical Principles on Industrial Practice,” Proc. 3rd Intl. Magnesium Conf., ed. G.W. Lorimer (London: Institute of Materials, 1997), pp. 78–87.
- H. Westengen and P. Bakke, “Magnesium Die Casting Alloys for Use in Applications Exposed to Elevated Temperatures: Can They Compete with Aluminum?” Magnesium Alloys 2003, Proc. 2nd Intl. PSTAM Conf., ed. Y. Kojima et al., (Switzerland: Trans Tech Publications, 2003) pp. 35–42.
- A.K. Dahle, “Mushy Zone Properties and Castability of Aluminium Foundry Alloys” (Ph.D. thesis, Norwegian Institute of Technology, 1996).
- A.M. Korol’kov, “Casting Properties of Metals and Alloys. Authorized Translation from Russian,” (New York: Consultants Bureau, 1963) pp. 23–67.
- Y.-L. Chu, P.S. Cheng, and R. Shivpuri, “Soldering Phenomenon in Aluminium Die Casting: Possible Causes and Cures,” NADCA Transactions 17th Int’l. Die Casting Congress & Exposition, (Rosemont, II: NADCA, 1993), pp. 361–371.
- O. Kubaschewski and C.B. Alcock, Materials Thermochemistry, 5th ed. (Oxford, U.K.: Pergamon Press, 1976), pp. 268–323.
- J. Campbell, Castings (Oxford, U.K.: Butterworth-Heinemann, 1991), p. 219.
- Improving the strength and ductility of magnesium die-casting alloys via rare-earth addition
Volume 55, Issue 11 , pp 46-51
- Cover Date
- Print ISSN
- Online ISSN
- Additional Links
- Industry Sectors