%0 Journal Article
%T Tensile Properties and Microstructure of DS NiAl-28Cr-5.8Mo-0.2Hf Alloy<br>Tensile Properties and Microstructure of DS NiAl—28Cr—5.8Mo—0.2Hf Alloy
%A Chuanyong CUI
%A Jianting GUO
%A Yihui QI
%A Hengqiang YE
%A <br>Chuangyong
%A JiantingGUO
%J 材料科学技术学报
%D 2002
%I 
%X A multiphase alloy NiAl-28Cr-5.8Mo-0.2Hf was directionally solidified in Ar atmosphere in an Al2O3-SiO2 mold by standard Bridgman method. The fracture toughness and tensile properties at 980℃ as well as tensile creep at 1050℃were studied. It was found that the strength of the present alloy is higher than that of many NiAl-based alloy and the stress exponent n for creep is about 6.69. Then the possible strengthening mechanism and creep mechanism are also discussed.
%K Intermetallic NiAl
%K Microstructure
%K Mechanical properties<br>镍铝基合金
%K 显微结构
%K 拉伸性能
%K 机械性能
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=324DC3CAB22330DB19158AE0A9B7BFA5&aid=FBF87647325BE7B7&yid=C3ACC247184A22C1&vid=13553B2D12F347E8&iid=0B39A22176CE99FB&sid=7EBE588F611589FC&eid=798FBE8DE1A255B1&journal_id=1005-0302&journal_name=材料科学技术学报&referenced_num=0&reference_num=0