ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
This paper is concerned with a manufacturing process and technology to facilitate theeconomical manufacture of high-quality magnesium alloy sheets. Magnesium alloys AZ31, AZ61,AM60 and AZ91 were used to investigate the appropriate anufacturing conditions for use in twin-rollstrip casting. Temperatures of the molten materials and roll speeds were varied to find the appropriatemanufacturing conditions. The effects of manufacturing conditions on possible forming wereclarified in terms of roll speeds and roll gaps between upper and lower rolls. In addition, microscopicobservation of the microstructure of the finished casting was performed. It was clarified that amagnesium sheet of 2.5 to 4.5mm thickness could be produced at a speed of 20 m/min by a horizontalcopper roll caster. It was also found that the cast magnesium sheet of AZ31, AZ61, AM60 and AZ91manufactured by roll strip casting could be used for plastic forming if the appropriate magnesiumsheets were produced after the roll casting process. By a warm deep drawing test, it also demonstratedthat a limiting drawing ratio of 2.4 was possible in the case of AZ91 sheet that was difficult to bemanufactured by conventional extrusion process or DC casting and hot-rolling process for magesiumalloy sheets with high aluminium contents
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/54/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.345-346.165.pdf
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