%0 Journal Article
%T EFFECTS OF Zr ON GRAIN BOUNDARY AND MECHANICAL PROPERTIES IN Ni_3Al ALLOYS<br>Zr对Ni3Al晶界及力学性能的影响
%A GUO Jianting GU Yue feng
%A LIN Dongliang
%A <br>郭建亭
%A 谷月峰
%A 林栋梁
%J 金属学报
%D 1995
%I 
%X The yield and ultimate strengths increase with the amount of Zr increasing. If an additive of Zr less than 0.7 at.-%. the elongation of the alloy increases with Zr content growing. If Zr added up to 1.2 at-%. the effect of Zr improving ductility of the alloy is fall off. Auger study indicated that the amount of Zr segregated to the GB is about 3 times greater than that in the bulk. SEM investigation showed that the fracture mode changes from intergranular in Ni-24.0 Al and Ni-24.0 Al-1.2Zr (in at.-%) alloys to the mixed of interand trans-granular in Ni-24.0 Al-0.3 Zr and Ni-24.0 Al-0.7 Zr (in at.-%) alloys. These results manifested that the effect of Zr improving the ductility in Ni3Al has strong relationship with the segregation of Zr at GB.
%K Ni_3Al
%K Zr
%K mechanical property
%K grain boundary<br>Ni3Al
%K 晶界
%K 锆
%K 金属间化合物
%K 力学性质
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=B061E1135F1CBDEE96CD96C109FEAD65&aid=5687D6E2765379A890D32EE86DE9FFE9&yid=BBCD5003575B2B5F&vid=4AD960B5AD2D111A&iid=38B194292C032A66&sid=2B5DE8A23DCEED39&eid=2F56B21F91C9B05B&journal_id=0412-1961&journal_name=金属学报&referenced_num=3&reference_num=3