3Lee Y C, Dahle A K, Sbjohn D H. The Role of solute in grain refinement of magnesium [J]. Metallurgical and Materials Transaction, 2000, 31A: 2895-2906.
4Lee Y C, Dahle A K, Sbjohn D H. Grain refinement of magnesium [A]. Magnesium Technology 2000 [C]. Nashville Tennesseem, 2000. 211 - 218.
5Yosuke Tamura, Tadashi Haitani, Eiji Yano, et al. Grain refinement of high-purity Mg-Al alloy ingots and influences of minor mounts of iron and manganese on cast grain size [J]. Materials Transactions, 2002, 43 (11):2784-2788.
6Dahle A K, Lee Y C, Nave M D, et al. Development of the ascast microstructure in magnesium-aluminum alloys [J]. Journal of Light Metals, 2001, (1): 61-72.
7Tamnara Y, Mobegi T, Stato E, et al. Grain refining mechanism of cast magnesium alloy [J]. Journal Japan Institute of Light Metal, 2001, 51 (11): 594-598.
8Polmear L J. Magnesium alloys and application [J]. Materials Science and Technology, 1994, 10 (1): 1 - 16.
9Wang Qudong, Chen Wenzhou, Zeng Xiaoqin, et al. Effects of Ca addition on the mictostructure and mechanical properties of AZ91 magnesium alloy [J]. Journal of Materials Science, 2001,36: 3035 - 3040.
10Sunghak Lee, Senng Hynk Lee, Do Hyang Kim. Effect of Y、Sr and Nd additions in the microstructure and microfracture mechanism of squeeze-cast AZ91-X magnesium alloys [J]. Metallurgical and Materials TransactionsA, 1998, 29A: 1221 - 1235.