Effect of elements Zn, Sn and In on microstructures and performances of AZ91 alloy

• Published in: Transactions of Nonferrous Metals Society of China Vol. 20; no. B07; pp. 318 - 323
• Main Author: 于湛 赵红阳 胡小东 巨东英
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.07.2010; Graduate School of Saitama Institute of Technology,Fusaiji 1690,Fukaya,Saitama 369-0293,Japan%Department of Material Science and Engineering,University of Science and Technology Liaoning,Anshan 114051,China%Department of Material Science and Engineering,Saitama Institute of Technology,Fusaiji 1690,Fukaya,Saitama 369-0293,Japan
• Subjects: Alloy plating; Alloying additive; Alloying elements; AZ91 alloy; AZ91合金; Magnesium base alloys; mechanical property; Mg-Zn-In-Sn alloy; Microstructure; Precipitation; Tin; twin-roll continuous casting; Zinc; 力学性能; 微观结构; 添加元素; 透射电子显微镜; 锡合金; 镁合金板; AZ91 alloy; Mg-Zn-In-Sn alloy; mechanical property; twin-roll continuous casting
• ISSN: 1003-6326
• DOI: 10.1016/s1003-6326(10)60490-6

A new magnesium alloy plate added elements Zn, Sn and In was manufactured by twin-roll continuous casting method to improve the precipitation of AZ91 alloy. The effects of elements addition and casting method on microstructure and mechanical properties of the Mg-Zn-In-Sn alloys were investigated by optical microscopy （OM）, transmission electron microscopy （TEM）, electron probe micro-analysis （EPMA）, X-ray diffractometry （XRD） and energy dispersion spectrograph （EDS）. The results show that the Mg-Zn-In-Sn alloy has higher tensile strength and better corrosion protection than the AZ91 alloy. The outstanding precipitation strengthening effect of the alloy is attributed to the small grain size and the hard precipitates between the grain boundaries.