The microstructure and mechanical properties of Mg-8Zn-8Al-4RE magnesium alloy


Autoria(s): Wang J; Wang JL; Xiao WL; Wu YM; Wang LM
Data(s)

2007

Resumo

The Mg-8Zn-8Al-4RE (RE = mischmetal, mass%) magnesium alloy was prepared by using casting method. The microstructure and mechanical properties of as-cast alloy, solid solution alloy and aged alloy samples have been investigated. Optical microscopy, X-ray diffractometery and scanning electron microscope attached energy spectrometer were used to characterize the microstructure and phase composition for the alloy. Net shaped tau-Mg-32(Al,Zn)(49) phase was obtained at the grain boundary, and needle-like or blocky Al11RE3 phase disperses in grain boundary and alpha-Mg matrix. The tau-Mg-32(Al,Zn)(49) phase disappeared during solution treatment and a new phase of Al(2)CeZn2 formed during subsequent age treatment. The mechanical properties were performed by universal testing machine at room temperature, 150 degrees C and 200 degrees C, separately. The ultimate tensile strength of as-cast alloy is lower compared to an age treatment alloy at 200 degrees C for 12h. The strengths decreased with enhancing test temperature, but elongation has not been effect by age treatment.

Identificador

http://ir.ciac.jl.cn/handle/322003/13711

http://www.irgrid.ac.cn/handle/1471x/149482

Idioma(s)

英语

Fonte

Wang J;Wang JL;Xiao WL;Wu YM;Wang LM.The microstructure and mechanical properties of Mg-8Zn-8Al-4RE magnesium alloy,2006 BIMW: 2006 Beijing International Materials Week, Pts 1-4 - MAGNESIUM - ALUMINIUM MATERIALS - AEROSPACE MATERIALS - SUPERCONDUCTING AND FUNCTIONAL MATERIALS 丛书: MATERIALS SCIENCE FORUM,2007 ,546-549(子辑:Part1-4):187-190

Tipo

期刊论文