Paper Title:
Mechanical Properties and Metallurgical Qualities of Magnesium Alloy Sheets Manufactured by Twin-Roll Casting
  Abstract

This paper is concerned with a manufacturing process and technology to facilitate the economical 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-roll strip casting. Temperatures of the molten materials and roll speeds were varied to find the appropriate manufacturing conditions. The effects of manufacturing conditions on possible forming were clarified in terms of roll speeds and roll gaps between upper and lower rolls. In addition, microscopic observation of the microstructure of the finished casting was performed. It was clarified that a magnesium sheet of 2.5 to 4.5mm thickness could be produced at a speed of 20 m/min by a horizontal copper roll caster. It was also found that the cast magnesium sheet of AZ31, AZ61, AM60 and AZ91 manufactured by roll strip casting could be used for plastic forming if the appropriate magnesium sheets were produced after the roll casting process. By a warm deep drawing test, it also demonstrated that a limiting drawing ratio of 2.4 was possible in the case of AZ91 sheet that was difficult to be manufactured by conventional extrusion process or DC casting and hot-rolling process for magesium alloy sheets with high aluminium contents.

  Info
Periodical
Key Engineering Materials (Volumes 345-346)
Edited by
S.W. Nam, Y.W. Chang, S.B. Lee and N.J. Kim
Pages
165-168
DOI
10.4028/www.scientific.net/KEM.345-346.165
Citation
H. Watari, R. Nakamura, R. Paisern, N. Koga, K. Davey, "Mechanical Properties and Metallurgical Qualities of Magnesium Alloy Sheets Manufactured by Twin-Roll Casting ", Key Engineering Materials, Vols. 345-346, pp. 165-168, 2007
Online since
August 2007
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Ryoji Nakamura, Hideki Inui, Hisaki Watari, Shinji Kumai
Abstract:A356 was cast into the strip by the semisolid strip casting using an unequal diameter twin roll caster. This process was one of the...
379
Authors: Hisaki Watari, Yoshimasa Nishio, Ryoji Nakamura, Keith Davey, Nobuhio Koga
Abstract:This paper describes the twin-roll casting technology of magnesium alloys that contain relatively high weight ratios of aluminum, such as...
1077
Authors: Ryoji Nakamura, Shuuya Hanada, Sinji Kumi, Hisaki Watari
Abstract:In-line rolling was operated on the as-cast strip cast by a vertical type high speed twin roll caster. The AA6022 and AA6111 strip was...
795
Authors: Kosuke Komeda, Ryoji Nakamura, Shinji Kumai
Abstract:The disadvantages of the conventional twin-roll caster for aluminum alloy are low casting speeds and limited choices of alloys that are...
1544
Authors: Toshio Haga, Hideki Inui, Ryoji Nakamura, Shinji Kumai, Hisaki Watari
Abstract:A 6061 aluminium alloy and an alloy with increased Fe content, representing recycled 6061 aluminium alloy were cast into strips at speed of...
1911