%0 Journal Article
%T Phase Transformation and Machnical Properties of Al2O3/ZrO2(Y2O3) Composites During Fracturing<br>Al2O3/ZrO2(Y2O3)复合材料断裂过程中的相变及力学性能
%A MA Weimin
%A XIU Zhimeng
%A BIXiaoguo
%A WEN Lei
%A SUN Xudong
%A <br>马伟民
%A 修稚萌
%A 毕孝国
%A 闻 雷
%A 孙旭东
%J 金属学报
%D 2005
%I 
%X The effect of the contents of ZrO2(3Y) and ZrO2(2Y) on the mechanical properties of the Al2O3/ZrO3(Y2O3) composites prepared by vacuum sintering has been studied. The change of m--ZrO2 and t-ZrO2 contents before and after fracture was detarmined by X-ray diffraction phase analysis, which is related to the toughening mechanism. When the content of ZrO2 is 15% (volume frection), the bending strength and fracture toughness of Al2O3/ZrO2(2Y) composite are 738 MPa and 6.7 MPa.m1/2, respectively, while those of the Al2O3/ZrO2(3Y) composite are 825 MPa and 7.8 MPa.m1/2, respectively. The difference in mechanical properties is due to the operation of different toughening mechanisms.
%K Al2O3/ZrO2(Y2O3) composite
%K vacuum sintering
%K trnsformation toughening
%K mechanical property<br>Al2O3／ZrO2复合材料
%K 真空烧结
%K 相变增韧
%K 力学性能
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=B061E1135F1CBDEE96CD96C109FEAD65&aid=6E6A9D31B4B56288&yid=2DD7160C83D0ACED&vid=2001E0D53B7B80EC&iid=CA4FD0336C81A37A&sid=39EEF47180459690&eid=10F298ED9F164662&journal_id=0412-1961&journal_name=金属学报&referenced_num=5&reference_num=22