Serrated Flow Behavior during Compression at Elevated Temperatures in Mg-3Al-1Zn-0.1RE Alloy

J Mater Sci Technol ›› 2009, Vol. 25 ›› Issue (04): 441-444.

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Serrated Flow Behavior during Compression at Elevated Temperatures in Mg-3Al-1Zn-0.1RE Alloy

Wei Qiu^1,2)† , Enhou Han¹⁾, Lu Liu ²⁾

1) Environmental Corrosion Center, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
2) Shenyang National Laboratory for Material Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China

Received:2008-09-16 Online:2009-07-28 Published:2009-10-10
Contact: Wei Qiu
Supported by:
the National Naturral Science Foundation of China under grant No. 50431020
the National Major Basic Research Program of China ("973 Program") under grant No. 2007CB613704.

Abstract

Abstract:

The deformation behaviour of an AZE (Mg-3Al-1Zn-0.1RE) alloy at temperature between 393 and 453 K was investigated by uniaxial compression tests carried out at initial strain rate values of 1×10^-4, 5×10^-4 and 1×10^-3 s^-1 in air. The results show that serrated flow occurs at the strain rate of 10^-4 s^-1 under all test temperatures and 5×10^-4 s^-1 at 453 K. The mechanism of serrated °ow was proposed, which is mainly attributed to the interaction of dislocations to the precipitates.

Key words: AZE alloy, Serrated flow, Warm deformation, Twin

Wei Qiu,Enhou Han,Lu Liu. Serrated Flow Behavior during Compression at Elevated Temperatures in Mg-3Al-1Zn-0.1RE Alloy[J]. J Mater Sci Technol, 2009, 25(04): 441-444.

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Serrated Flow Behavior during Compression at Elevated Temperatures in Mg-3Al-1Zn-0.1RE Alloy

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