Int. J. of Nanomanufacturing   »   2013 Vol.9, No.3/4

 

 

Title: Effects of manganese and rare earth elements on the microstructural evolution and deformation behaviour of the anode materials of AZ61 magnesium alloy

 

Authors: Ruixiao Qu; Wenbo Cao; Zhidan Liu; Qingkui Li; Shaokang Guan

 

Addresses:
School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450002, China
School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450002, China
School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450002, China
School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450002, China
School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450002, China

 

Abstract: The microstructural evolution of AZ61 alloys derived via a hot compression process, with different contents of manganese (Mn) and rare earth elements were investigated. The results showed that the morphology of Mg17Al12 was gradually changed when the Mn/RE ratio decreases from 1 to 0.3. A new Al4RE phase was formed with the addition of RE elements and the amount of Al8Mn5 increased with the increase of Mn. The optical microscopy images of the samples treated at 400°C for 10 h revealed that the Mg17Al12 phase was dissolved into α-Mg matrix. The hot compression treatment resulted in dynamic recrystallisation of the AZ61 alloys, of which the Al4RE phase with needle-like changed in morphology compared with the heated alloys. The degrees of dynamic recrystallisation of the alloys with additives of Mn and RE became higher than those of the alloys without Mn or RE elements.

 

Keywords: anode materials; AZ61 magnesium alloys; microstructure evolution; deformation behaviour; nanotechnology; manganese; rare earth elements; hot compression; dynamic recrystallisation.

 

DOI: 10.1504/IJNM.2013.056054

 

Int. J. of Nanomanufacturing, 2013 Vol.9, No.3/4, pp.286 - 294

 

Submission date: 27 Sep 2012
Date of acceptance: 16 Jan 2013
Available online: 29 Aug 2013

 

 

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