TY - GEN
T1 - Effects of gadolinium on aging behavior and mechanical properties of Mg-5Y-3Nd-Zr alloy
AU - Wang, Lidong
AU - Xing, Chengyao
AU - Hou, Xiuli
AU - Wu, Yaoming
AU - Sun, Jianfei
AU - Cao, Zhanyi
AU - Wang, Limin
PY - 2011
Y1 - 2011
N2 - Mg-5Y-3Nd-Zr-xGd (x=0 and 4 wt.%) alloys were prepared by metal mould casting, and aging behavior, mechanical properties and fracture morphology were investigated. The result shows that after T6 treatment, the massive eutectic phase in as-cast alloys dissolved and finer Mg5RE phase precipitated dispersively in the matrix, and mechanical properties were improved simultaneously. Mg-5Y-3Nd-4Gd-Zr alloy exhibits good age hardening behavior and the peak hardness is about 20% higher than the Gd-free alloy. Gd addition can significantly improve mechanical properties of the alloy especially at the elevated temperature. The ultimate tensile strength and yield strength of Mg-5Y-3Nd-4Gd-Zr alloy at 250°C, with the value of 276 and 168 MPa, respectively, are over 20% higher than those of the Gd-free alloy. It is mainly attributed to the increase and homogeneous distribution of the fine heat-resistant Mg5RE precipitate in the matrix.
AB - Mg-5Y-3Nd-Zr-xGd (x=0 and 4 wt.%) alloys were prepared by metal mould casting, and aging behavior, mechanical properties and fracture morphology were investigated. The result shows that after T6 treatment, the massive eutectic phase in as-cast alloys dissolved and finer Mg5RE phase precipitated dispersively in the matrix, and mechanical properties were improved simultaneously. Mg-5Y-3Nd-4Gd-Zr alloy exhibits good age hardening behavior and the peak hardness is about 20% higher than the Gd-free alloy. Gd addition can significantly improve mechanical properties of the alloy especially at the elevated temperature. The ultimate tensile strength and yield strength of Mg-5Y-3Nd-4Gd-Zr alloy at 250°C, with the value of 276 and 168 MPa, respectively, are over 20% higher than those of the Gd-free alloy. It is mainly attributed to the increase and homogeneous distribution of the fine heat-resistant Mg5RE precipitate in the matrix.
KW - Aging behavior
KW - Gadolinium
KW - Mechanical properties
KW - Mg-5Y-3Nd-Zr alloy
UR - https://www.scopus.com/pages/publications/79960795505
U2 - 10.4028/www.scientific.net/AMR.295-297.1183
DO - 10.4028/www.scientific.net/AMR.295-297.1183
M3 - 会议稿件
AN - SCOPUS:79960795505
SN - 9783037851944
T3 - Advanced Materials Research
SP - 1183
EP - 1187
BT - Manufacturing Science and Technology
T2 - 2011 International Conference on Advanced Engineering Materials and Technology, AEMT 2011
Y2 - 29 July 2011 through 31 July 2011
ER -