%0 Journal Article
%T INFLUENCE OF Al ON DUCTILITY IMPROVEMENT BY B IN Ni_3 Al ALLOYS<br>Ni3Al中Al含量对硼韧化作用的影响
%A YANG Wenying
%A LU Fanxiu
%A ZHANG Shouhua University of Science
%A Technology Beijing
%A <br>杨文英
%A 吕反修
%A 章守华
%J 金属学报
%D 1990
%I 
%X The "order-disorder" model was adopted to calculate the lattice vacancy relatedto the composition change in Ni_3Al alloys. A great deal of vacancies, i. e., the non-stoichiome-tric vacancies, may exist in the Ni_3Al alloys containing Al over stoichiometry, saying, 25 at.-%.This was confirmed by the positron annihilation technique. Therefore, the influence of Al con-tent on the bettering behaviour of B towards the ductility of Ni_3Al alloys can be understoodthrough the interaction of non-stoichiometric vacancy and B atom.
%K intermetallic compound
%K Ni_3Al
%K ductility mechanism<br>Ni3Al
%K 金属间化合物
%K 硼
%K 韧化机理
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=B061E1135F1CBDEE96CD96C109FEAD65&aid=9A4ADDF91C1C347B74D5D2078AE1D6D4&yid=8D39DA2CB9F38FD0&vid=96C778EE049EE47D&iid=94C357A881DFC066&sid=B9704B40A4225A24&eid=80A07035DF96B0C4&journal_id=0412-1961&journal_name=金属学报&referenced_num=0&reference_num=1