MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
Effects of Ca on Tensile Properties and Stretch Formability at Room Temperature in Mg-Zn and Mg-Al Alloys
Yasumasa ChinoTakamichi UedaYuki OtomatsuKensuke SassaXinsheng HuangKazutaka SuzukiMamoru Mabuchi
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2011 Volume 52 Issue 7 Pages 1477-1482

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Abstract

The tensile tests and the Erichsen tests at room temperature have been performed on seven kinds of Mg alloys: Mg-1.5Zn, Mg-1.5Zn-0.1Ca, Mg-3Zn, Mg-3Zn-0.1Ca, Mg-3Al, Mg-3Al-0.1Ca and Mg-1Al-1Zn-0.1Ca-0.5Mn alloys. In the Mg-Zn alloys, the 0.2% proof stress at 90°, which was the angle between the tensile direction and the RD, was decreased by addition of Ca, while the 0.2% proof stress at 0° was increased by addition of Ca. Also, an increase in elongation to failure by addition of Ca at 90° was larger than that at 0°. However, such variations in tensile properties by addition of Ca were not found in the Mg-Al alloy. The stretch formability for the Mg-Zn alloys was significantly enhanced by addition of Ca, while the stretch formability of the Mg-Al alloy was not enhanced by addition of Ca. These results by the mechanical testing are ascribed to the variations in basal texture by addition of Ca.

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© 2011 The Japan Institute of Metals and Materials
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