%0 Journal Article
%T Effects of Oxygen on the Microstructure of Ti_(47)Al_(0.7)B Alloys<br>
%A Yingche Ma
%A Zhiguo Jiang
%A Bo Chen
%A Xiujuan Zhao
%A Ming Gao
%A Kui Liu
%A Yiyi Li Institute of Metal Research
%A Chinese Academy of Sciences
%A Shenyang
%A China
%A <br>
%J 材料科学技术学报
%D 2010
%I 
%X The effects of oxygen on the microstructure of Ti-47Al-0.7B (at. pct) alloy for as-cast automotive valves were investigated. Six alloys with oxygen content from 0.4 to 1.4 at. pct were prepared by induction melting and centrifugal casting in CaO crucible under protective atmosphere. The microstructures were observed by optical microscopy (OM) and scanning electron microscope (SEM). The results show that the increase of oxygen content led to grain refinement and enhanced the microhardness as well as the α2 volume fraction in the TiAl-based alloys.
%K Microstructure
%K Oxygen content
%K Grain refinement
%K TiAl-based alloys<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=324DC3CAB22330DB19158AE0A9B7BFA5&aid=0862CC7EE871CE19EEE70ED6ED4C5D4E&yid=140ECF96957D60B2&vid=96C778EE049EE47D&iid=0B39A22176CE99FB&sid=6DE26652A1045643&eid=5E25104E99903E8A&journal_id=1005-0302&journal_name=材料科学技术学报&referenced_num=0&reference_num=17