| 11 | PREPARATION AND SOLIDIFICATION CHARACTERISTIC OF IN SITU DIRECTIONALLY SOLIDIFIED EUTECTIC Al_(11)La_3/Al COMPOSITE显示文摘In situ eutectic Al11La3/Al composite material with regular arrangement was prepared byzone melt liquid metal cooling directionally solidification under conditions of high temperaturegradient G=700K/cm and growth rate R=6.0-20.0μm/s.Superpose diffraction pat-tern of Al11La3/Al composite shows that the preferred growth direction is[100]Al//[33]Al11La3,and the habit plane is(002)Al//(116)Al11La3.A low density(103)twin is ob-served in Al11La3 and the growth of(103)twin induces to branching to change theinterlamellar spacing. | DONG Hongbiao JI Yongyi ZHU Jun LU Shuzu ZHONG Xueyou University of Science and Technology,Beijing,ChinaLI Jianguo Northwestern Polytechnical University,Xi’an,China DONG Hongbiao,lecturer,Department of Metallurgy,University of Science and Technology Beijing,Beijing 100083,China | 1993 | Acta Metallurgica Sinica(English Letters)1993，6，5： | 0 |
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