Effect of Pressure on Microstructure and Mechanical Properties of AM60B Alloy Used for Motorcycle Wheels Formed by Double Control Forming

doi:10.1016/j.jmst.2013.02.009

J. Mater. Sci. Technol. ›› 2013, Vol. 29 ›› Issue (5): 439-445.DOI: 10.1016/j.jmst.2013.02.009

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Effect of Pressure on Microstructure and Mechanical Properties of AM60B Alloy Used for Motorcycle Wheels Formed by Double Control Forming

Jufu Jiang¹⁾, Yuansheng Cheng¹⁾, Zhiming Du¹⁾, Jun Liu¹⁾, Yuanfa Li²⁾, Shoujing Luo¹⁾

1) School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
2) Mg Technology (Shen Zhen) Co. Ltd. of Ka Shui Group, Shenzhen 518111, China

Received:2012-01-31 Revised:2012-04-13 Online:2013-05-30 Published:2013-05-17
Contact: J. Jiang
Supported by:
National Natural Science Foundation of China (NSFC) under Grant No. 51075099, the Natural Science Foundation of the Heilongjiang Province under the Grant No. E201038, the China Postdoctoral Science Foundation under the Grant No. 20090460884, the Fundamental Research Funds for the Central Universities under the Grant No. HIT.NSRIF.2013007, the Harbin City Young Scientists Foundation under the Grant No. 2011RFQXG010 and the Specially Postdoctoral Science Foundation of Heilongjiang Province under Grant No. LBH-T1102.

Abstract

Abstract:

A set of novel forming die combining the advantages of dies casting and forging was designed, by which double control forming idea was firstly proposed. The motorcycle wheel made of AM60B alloy was used as the typical component to demonstrate advantages of the double control forming. The effect of pressure on the mechanical properties and microstructure of the parts formed by double control forming was investigated. The results showed that high mechanical properties and complex shape were achieved in the parts formed by double control forming. Compared to die casting, the mechanical properties of the formed part significantly increased and the microstructure changed from the coarse dendrites to fine equiaxed grains. The shrinkage voids and microcracks in the formed parts were obviously reduced or even completely eliminated with the increase of pressure. When a pressure of 4000 kN was applied, the optimal mechanical properties such as ultimate tensile strength of 265.6 MPa and elongation of 21% were achieved and the microstructure was characterized by fine and uniform equiaxed grains due to the large undercooling degree caused by the high pressure.

Key words: Die casting, Forging, Magnesium alloy

Jufu Jiang, Yuansheng Cheng, Zhiming Du, Jun Liu, Yuanfa Li, Shoujing Luo. Effect of Pressure on Microstructure and Mechanical Properties of AM60B Alloy Used for Motorcycle Wheels Formed by Double Control Forming[J]. J. Mater. Sci. Technol., 2013, 29(5): 439-445.

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Effect of Pressure on Microstructure and Mechanical Properties of AM60B Alloy Used for Motorcycle Wheels Formed by Double Control Forming

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