%0 Journal Article
%T Uniaxial Cyclic Deformation of Sicp/6061Al Alloy Composites and Its Time--Dependence<br>SiCp/6061Al合金复合材料的单轴循环变形行为及其时间相关特性
%A KANG Guozheng
%A LIU Yujie
%A <br>康国政
%A 刘宇杰
%J 金属学报
%D 2006
%I 
%X The uniaxial cyclic deformations of T6-treated 6061A1 alloy and SiC_p/6061Al alloy composites(14%,21% SiC_p)were studied experimentally at room temperature.The cyclic soften- ing/hardening features and ratcheting behaviors of unreinforced matrix and the composites were dis- cussed under the different loading conditions.It is shown that the strain cyclic characteristics and ratcheting behavior of the composites are similar to those of the un-reinforced matrix in macro-scale, namely,the ratcheting also occurs in the composites under asymmetrical stress cycling and the ratch- eting strain increases as the stress amplitude and mean stress increased;however,the addition of SiC_p increases the resistance of the composites to ratcheting,and the ratcheting strain decreases as the volume fraction of SiC_p increased;the ratcheting has great time-dependence,i.e.,the ratcheting strain depends on the stressing rate and peak stress hold time.Some significant conclusions are obtained, which is useful to construct a constitutive model to describe the cyclic deformations of the composites.
%K SiCp/6061Al composites
%K ratcheting
%K time-dependence<br>SiCp/6061Al合金复合材料
%K 棘轮行为
%K 时相关
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=B061E1135F1CBDEE96CD96C109FEAD65&aid=8DF3E11DA5F8C0E2&yid=37904DC365DD7266&vid=ECE8E54D6034F642&iid=CA4FD0336C81A37A&sid=6AC2A205FBB0EF23&eid=5C3443B19473A746&journal_id=0412-1961&journal_name=金属学报&referenced_num=1&reference_num=21