TY - GEN
T1 - The microstructure and mechanical properties of Mg-8Zn-8Al-4RE magnesium alloy
AU - Wang, Jun
AU - Wang, Jianli
AU - Xiao, Wenlong
AU - Wu, Yaoming
AU - Wang, Limin
PY - 2007
Y1 - 2007
N2 - 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 τ-Mg32(Al,Zn) 49 phase was obtained at the grain boundary, and needle-like or blocky Al11RE3 phase disperses in grain boundary and α-Mg matrix. The τ-Mg32(Al,Zn)49 phase disappeared during solution treatment and a new phase of Al2CeZn 2 formed during subsequent age treatment. The mechanical properties were performed by universal testing machine at room temperature, 150°C and 200°C, separately. The ultimate tensile strength of as-cast alloy is lower compared to an age treatment alloy at 200°C for 12h. The strengths decreased with enhancing test temperature, but elongation has not been effect by age treatment.
AB - 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 τ-Mg32(Al,Zn) 49 phase was obtained at the grain boundary, and needle-like or blocky Al11RE3 phase disperses in grain boundary and α-Mg matrix. The τ-Mg32(Al,Zn)49 phase disappeared during solution treatment and a new phase of Al2CeZn 2 formed during subsequent age treatment. The mechanical properties were performed by universal testing machine at room temperature, 150°C and 200°C, separately. The ultimate tensile strength of as-cast alloy is lower compared to an age treatment alloy at 200°C for 12h. The strengths decreased with enhancing test temperature, but elongation has not been effect by age treatment.
KW - Mechanical properties
KW - Mg-8Zn-8Al-4Ce alloy
KW - Microstructure
KW - Rare earth
UR - http://www.scopus.com/inward/record.url?scp=38349192510&partnerID=8YFLogxK
U2 - 10.4028/0-87849-432-4.187
DO - 10.4028/0-87849-432-4.187
M3 - 会议稿件
AN - SCOPUS:38349192510
SN - 0878494324
SN - 9780878494323
T3 - Materials Science Forum
SP - 187
EP - 190
BT - Progress in Light Metals, Aerospace Materials and Superconductors
PB - Trans Tech Publications Ltd
T2 - 2006 Beijing International Materials Week, 2006 BIMW - 2nd International Conference on Magnesium, ICM 2006
Y2 - 25 June 2006 through 30 June 2006
ER -