%0 Journal Article
%T Microstructural Stability of a Single Crystal Superalloy DD8 during Thermal Exposure<br>
%A KYCheng
%A DHKim
%A YSYoo
%A CYJo
%A TJin
%A ZQHu
%A <br>
%J 材料科学技术学报
%D 2008
%I 
%X Microstructural stability of a nickel base single crystal alloy DD8 has been investigated. Standard heat treated specimen showed good microstructural stability at 950℃. While under the as-cast condition, a kind of rod-like phase precipitated in the interdendritic region of as-cast specimen during thermal exposure. The phase, which has bcc structure, was enriched with Cr. Thermo-calc also predicted precipitation of a bcc phase at around 950℃. The Cr-rich bcc phase was considered as α-Cr and formed due to the segregation of Cr under the as-cast condition.
%K DD-8
%K Single crystal alloy
%K Microstructural stability
%K Alpha chromium<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=324DC3CAB22330DB19158AE0A9B7BFA5&aid=9E82B35EC9F995C6EA5678C76B64DEA7&yid=67289AFF6305E306&vid=B91E8C6D6FE990DB&iid=CA4FD0336C81A37A&sid=B344543C2864D684&eid=B47A0E731AF43EB2&journal_id=1005-0302&journal_name=材料科学技术学报&referenced_num=0&reference_num=9