Effects of Isothermal Heating Process and Rare Earth Elements Addition on the Mechanical Properties of Semi-Solid Formed Mg-5%Zn Alloys

Abstract:

Two-step isothermal heating and conventional one-step heating processes were used to produce the semi-solid slurry of Mg-5%Zn-0.5%Zr alloys with and without 1%RE. It was found that the slurry with better semi-solid characteristics could be fabricated by the two-step heating compared to the conventional process. Only the small amount of RE addition to the Mg-5%Zn- 0.5%Zr alloy was observed to reduce the solid particle size of slurry significantly and to improve the tensile strength at 150oC, probably owing to Mg-Zn-RE phase with a high thermal stability.

• Periodical: Materials Science Forum (Volumes 544-545)
• Pages: 279-282
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.544-545.279
• Online since: May 2007
• Authors: Jeong Min Kim, Joong Hwan Jun, Ki Tae Kim, Woon Jae Jung
• Keywords: Isothermal Heating, Mechanical Property, Mg-Zn Alloy, Re, Semi-Solid

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[10] [20] [30] [40] [50] [60] [70] [80] Elongation(%) UTS Elong. 100 120 140 160 180 200 220 240 No RE 1%RE UTS(MPa).

[2] [4] [6] [8] [10] [12] [14] [16] [18] [20] Elongation(%) UTS Elong.