Effects of Rolling Condition on Warm Deep Drawability of Magnesium Alloy Sheets Produced by Twin-Roll Strip Casting

Abstract:

Effects of rolling conditions on warm deep drawability of cast magnesium alloy that were hot rolled after roll strip casting were investigated to ascertain the feasibility of twin-roll strip casting process of AZ31B magnesium alloy. Hot rolling and heat treatment conditions were changed to examine which conditions were appropriate for producing AZ31B wrought magnesium alloys after strip casting process. Microscopic observation of the crystals of the manufactured wrought magnesium alloys was performed. It has been found that a limiting drawing ratio of 2.7 was possible in a warm deep drawing test of the cast magnesium alloy sheets after being hot rolled.

• Periodical: Materials Science Forum (Volumes 475-479)
• Pages: 489-492
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.475-479.489
• Online since: January 2005
• Authors: Hisaki Watari, Keith Davey, M.T. Alonso Rasgado, L.D. Clark, Ryoji Nakamura, Nobuhio Koga
• Keywords: Magnesium Alloy, Semi-Solid Strip Casting, Twin Roll Caster, Warm Deep-Drawability

References

[1] H. Watari, N. Koga, R. Paisarn and T. Haga: Mater. Sci. Forum Vols. 449-452 (2004), p.181. Fig. 3 Relation between annealing temperature and limiting drawing ratio.

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[2] 0 Limiting drawing ratio 250 300 350 400 Annealing temperature (°C) Vd=2. 5 mm/s Vd=30 mm/s Fig. 4 Microstructure of manufactured wrought magnesium alloy sheet ( Ta=250° C ). Fig. 5 Microstructure of manufactured wrought magnesium alloy sheet ( Ta=350° C ).