李春志
,
王顺才
,
金延
金属学报
2024铝合金中的弥散相Al_(20)Cu_2Mn_3普遍由孪晶组成,通过高分辨像的观察分析,发现其孪晶间的界面不是镜面,而是滑移面;孪晶两部分不是反映(或旋转)对称,而是滑移反映对称,“金刚石”滑移面是(101),滑移矢量(1/4)(a-c),组成孪晶的各晶体组元呈棱柱体形状,各侧棱都平行于[010],棱柱侧面是{010}和{100}。
关键词:
孪晶
,
glide reflection
,
high resolution image
,
Al-Cu-Mg alloy
LI Chunzhi WANG Shuncai JIN Yan Institute of Aeronautical Materials
,
Beijing
,
Laboratory of Atomic Imaging of Solids
,
Institute of Metal Research
,
Academia Sinica
,
Shenyang
,
China
金属学报(英文版)
The dispersoid phase Al_(20)Cu_2Mn_3 in a 2024 Al alloy is commonly composed of twins,An ob- servation of corresponding high resolution image shows that the twin boundary plane is a glide plane other than mirror one.Two neighbouring components of twins are not symmetry of re- flection or rotation,but of glide reflection.The“diamond”glide plane is(101)and the glide vector is(1/4)(-).Components of twins in the phase take shape of prism with the longitudinal edge being parallel to[010]and side faces being{101}and{100}.
关键词:
twin
,
null
,
null
,
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