%0 Journal Article
%T HIGH RESOLUTION STUDY OF TWINS IN Al_(20)Cu_2Mn_3 PHASE<br>Al20Cu2Mn3相中孪晶的高分辨电子显微术研究
%A LI Chunzhi
%A WANG Shuncai
%A JIN Yan Institute of Aeronautical Materials
%A Beijing
%A Laboratory of Atomic Imaging of Solids
%A Institute of Metal Research
%A Academia Sinaica
%A Shenyang
%A <br>李春志
%A 王顺才
%A 金延
%J 金属学报
%D 1992
%I 
%X The dispersoid phase Al_(20)Cu_2Mn_3 in a 2024 Al alloy is commonly composed of twins. An observation 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 reflection or rotation, but of glide reflection. The "diamond" glide plane is (101) and the glide vector is (1/4)(a--c). 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}.
%K twin
%K glide reflection
%K high resolution image
%K Al-Cu-Mg alloy<br>孪晶
%K 滑移反映
%K Al－Cu－Mg合金
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=B061E1135F1CBDEE96CD96C109FEAD65&aid=875CFEB4F4025938F8C6BFEA13764594&yid=F53A2717BDB04D52&vid=D3E34374A0D77D7F&iid=CA4FD0336C81A37A&sid=CA4FD0336C81A37A&eid=94C357A881DFC066&journal_id=0412-1961&journal_name=金属学报&referenced_num=0&reference_num=1