%0 Journal Article
%T ROOM TEMPERATURE MECHANICAL BEHAVIOR OF B2-ORDERED Fe_3Al SINGLE CRYSTALS<br>B2结构Fe3Al单晶室温力学行为各向异性的研究
%A ZHENG Weiwei
%A YANG Wangyue
%A LIU Qing
%A SUN Zuqing
%A <br>郑为为
%A 杨王玥
%A 刘庆
%A 孙祖庆
%J 金属学报
%D 1998
%I 
%X A detailed study of room temperature mechanical behavior of B2-ordered Fe3Alsingle crystals had been conducted. It was found that the yield strength, plastic elongation and work-hardening rate were changed with orientations. The highest ductility was measured from the specimen with the orientation near 110], where the plastic elongation is 42%. In contrast, at near 100] the plastic elongation is only 14.1%. The high work-hardening rate of the orientation near 110] was confirmed to be the results of superdislocation interaction, and the dissociation of two-fold superdislocations into single dislocations led to cross-slip, which resulted in further increase in elongation. The low work-hardening rate of near 211] was due to single active slip system and the superdislocations kept two-fold until the specimen was fractured.
%K Fe_3Al
%K mechanical behavior
%K anisotropy<br>Fe3Al
%K 力学行为
%K 各向异性
%K 金属间化合物
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=B061E1135F1CBDEE96CD96C109FEAD65&aid=ECDC9ECCF881A3E34F1C747D449D7398&yid=8CAA3A429E3EA654&vid=339D79302DF62549&iid=708DD6B15D2464E8&sid=966760CE8B6E636C&eid=4442BFF895478018&journal_id=0412-1961&journal_name=金属学报&referenced_num=4&reference_num=1