中國有色金屬學(xué)報(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 20 Special 2 July 2010 |
（1. School of Materials Science and Metallurgy, University of Science and Technology Liaoning,
Anshan 114051, China;
2. School of Materials Science and Engineering, Yanshan University, Qinhuangdao 066004, China）
Abstract:The phase structure of ZK60-1Er magnesium alloy thermally compressed at the temperature of 450 ˚C and the strain rate of 1×10−4 s−1 was determined by transmission electron microscopy (TEM) and high-resolution electron microscopy (HREM). The results show that this magnesium alloy contains many new W phases (Mg3Zn3Er2, FCC structure) in the matrix. Those new W phases have two morphologies, either irregularly rectangular or rod morphology. Lattice constants of the two new W phases are slightly higher than those of W Phase (Mg3Zn3Y2) containing rare earth element of yttrium.
Key words: ZK60; Er; W phase; magnesium alloy; phase structure
