%0 Journal Article
%T EFFECTS OF TRACE Li ADDITION ON MECHANICAL PROPERTIES OF Ni_3Al<br>Li对Ni3Al力学性能的影响
%A 张迎九
%A 谢佑卿
%A 李卫民
%A 唐仁政
%A 高坤元
%A 吕维洁
%A 陈伶辉
%J 金属学报
%D 1996
%I 
%X The mechanical properties of Ni3Al alloys containing trace Li have been studied. It is found that trace Li may improve their yield strength and a proper amount may improve the ductility of polycrystalline Ni3Al alloys and change the fracture model from the inter-granular to the mixture of inter-and trans-granular. But neither improvement over brittleness at medium temperature nor effect on the ductility of polycrystalline Ni3Al B alloys is satisfactory. XPS seems to indicate that Li atoms segregate to grain boundaries of Ni3Al alloys. According to this, preliminary explications of Li ductiling Ni3Al alloys might been made.
%K Ni_3Al
%K lithium
%K mechanical property
%K grain boundary<br>力学性能
%K 镍铝合金
%K 金属间化合物
%K 锂
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=B061E1135F1CBDEE96CD96C109FEAD65&aid=B15281E45876614AF44349CB1A695418&yid=8A15F8B0AA0E5323&vid=9971A5E270697F23&iid=94C357A881DFC066&sid=A33A8FD1432A4C3E&eid=07C6E4664BB7C5DA&journal_id=0412-1961&journal_name=金属学报&referenced_num=0&reference_num=3