Effect of Titanium, Antimony, Cerium and Carbon Nanotubes on the Morphology and Microhardness of Mg-based Icosahedral Quasicrystal Phase

材料科学技术（英）, 2010, 26(1): 27-32.

^1, , ^2, , ^3, , ^4, , ^5, , ^6,

1.School of Materials Science and Engineering,Hebei University of Technology,Tianjin 300130,China

2.School of Materials Science and Engineering,Hebei University of Technology,Tianjin 300130,China

3.School of Materials Science and Engineering,Hebei University of Technology,Tianjin 300130,China

4.School of Materials Science and Engineering,Hebei University of Technology,Tianjin 300130,China

5.School of Materials Science and Engineering,Hebei University of Technology,Tianjin 300130,China

6.School of Materials Science and Engineering,Hebei University of Technology,Tianjin 300130,China

基金项目: the Doc-total Science Foundation of Hebei University of Technology The Natural Science Fund of Hebei Province,China(E2008000045) Tianjin Mu-nicipal High-Tech SMEs Special Funds for Technical Inno-vation Project of China(09ZXCXGX14500)

Effect of Titanium, Antimony, Cerium and Carbon Nanotubes on the Morphology and Microhardness of Mg-based Icosahedral Quasicrystal Phase

Zhifeng Wang ^1, , Weimin Zhao ^2, , Haipeng Li ^3, , Jian Ding ^4, , Yongyan Li ^5, , Chunyong Liang ^6,

1.School of Materials Science and Engineering,Hebei University of Technology,Tianjin 300130,China

2.School of Materials Science and Engineering,Hebei University of Technology,Tianjin 300130,China

3.School of Materials Science and Engineering,Hebei University of Technology,Tianjin 300130,China

4.School of Materials Science and Engineering,Hebei University of Technology,Tianjin 300130,China

5.School of Materials Science and Engineering,Hebei University of Technology,Tianjin 300130,China

6.School of Materials Science and Engineering,Hebei University of Technology,Tianjin 300130,China

Keywords： Quasicrystal

For the first time, petal-like and spherical Mg-based icosahedral quasicrystal phase (1-phase) were obtained by introducing Ti, Sb, Ce and C nanotubes into Mg-Zn-Y alloy under normal casting conditions. The formation mechanism and stability criterion of spherical 1-phase were discussed. The morphology and microhardness of I-phase and their determinants were studied in this paper. The results show that the different value of microhardness of 1-phase could be attributed to the different kinds of the fourth component and its content, and its different innate characters. The final morphology of icosaheclral quasicrystalline (IQC) is decided by the size of critical stable radius R_r, the content of the fourth component and degree of undercooling.

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Effect of Titanium, Antimony, Cerium and Carbon Nanotubes on the Morphology and Microhardness of Mg-based Icosahedral Quasicrystal Phase

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