TY - JOUR
T1 - Investigation on the mechanical properties and microstructures of Mg-Zn-Al-Cu cast magnesium alloys
AU - Li, Jiehua
AU - Jie, Wanqi
AU - Yang, Guangyu
PY - 2008/3
Y1 - 2008/3
N2 - This paper selected some new elements of Mg-Zn-Al magnesium alloys as experimental alloys to study the microstructures and mechanical properties of ZAC843 permanent mold casting magnesium alloy by adding Cu and Sr, Ti, especially the effects of Sr, Ti addition on the microstructures. It was found that the microstructure was consisted of δ-Mg and Mg32(Al, Zn)49, without Mg17Al12 when Cu was added into ZAC843 permanent mold casting magnesium alloy, and the Cu element was dissolved into Mg32(Al, Zn)49 after hot-treatment. It can improve the melting point of Mg32(Al, Zn)49 and the solid temperature of ZAC843 magnesium alloy. The addition of trace Sr and Ti has better influences on the microstructure, however, only adding Sr can not change the microstructure effectively. When the experimental alloys was heat treated, the microstructure was refined and the mechanical properties were improved, especially, for the ZAC843A permanent mold casting magnesium alloy (σb=253 MPa T6).
AB - This paper selected some new elements of Mg-Zn-Al magnesium alloys as experimental alloys to study the microstructures and mechanical properties of ZAC843 permanent mold casting magnesium alloy by adding Cu and Sr, Ti, especially the effects of Sr, Ti addition on the microstructures. It was found that the microstructure was consisted of δ-Mg and Mg32(Al, Zn)49, without Mg17Al12 when Cu was added into ZAC843 permanent mold casting magnesium alloy, and the Cu element was dissolved into Mg32(Al, Zn)49 after hot-treatment. It can improve the melting point of Mg32(Al, Zn)49 and the solid temperature of ZAC843 magnesium alloy. The addition of trace Sr and Ti has better influences on the microstructure, however, only adding Sr can not change the microstructure effectively. When the experimental alloys was heat treated, the microstructure was refined and the mechanical properties were improved, especially, for the ZAC843A permanent mold casting magnesium alloy (σb=253 MPa T6).
KW - Annealing
KW - Mechanical properties
KW - Microstructures
KW - ZAC843 cast magnesium alloys
UR - http://www.scopus.com/inward/record.url?scp=42549102712&partnerID=8YFLogxK
M3 - 文章
AN - SCOPUS:42549102712
SN - 1002-185X
VL - 37
SP - 428
EP - 432
JO - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
JF - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
IS - 3
ER -