%0 Journal Article
%T On the Strength of Silicon Carbide Particulate Reinforced Aluminium Alloy Matrix Composites
%A Mingjiu ZHAO
%A Yue LIU
%A Liqing CHEN
%A Jing BI
%A <br>Mingjiu ZHAO
%A Yue LIU
%A Liqing CHEN and Jing BI Institute of Metal Research
%A Chinese Academy of Sciences
%A Shenyang
%A China
%J 材料科学技术学报
%D 2004
%I 
%X In the present study, the modified continuum model, quench strengthening and dislocation pile-up model was respectively used to estimate the yield strength of SiCp/Al composites. The experimental results showed that the modified shear lag model or quench strengthening model would underestimate the yield strength of SiCp/Al composites. However, the modified Hall-Petch correlation on the basis of the dislocation pile-up model, expressed as σcy = 244 + 371λ-1/2, fitted very well with the experimental data, which indicated that the strength increase of SiCp/Al composites might be due to the direct blocking of dislocation motion by the particulate-matrix interface.Namely, the dislocation pile-up is the most possible strengthening mechanism for SiCp/Al composites.
%K Silicon carbide particulate
%K Composites
%K Shear lag model
%K Quench strengthening model
%K Dislocation pile-up model
%K Hall-Petch correlation<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=324DC3CAB22330DB19158AE0A9B7BFA5&aid=76372C6BC8C47CC7&yid=D0E58B75BFD8E51C&vid=A04140E723CB732E&iid=E158A972A605785F&sid=9B95A71E6639C039&eid=FB36B1C076A263FA&journal_id=1005-0302&journal_name=材料科学技术学报&referenced_num=0&reference_num=27