%0 Journal Article
%T Microstructure and Its Influence on Mechanical Behaviour of Directionally Solidified DZ38G Superalloy
%A ZHANG Jinghua TANG Yajun YU Yang ZHANG Jishan HU Zhuangqi LIAO Huaqing Institute of Metal Research
%A Academia Sinica
%A Shenyang
%A China Xi''''an Air Engine Company
%A Xian
%A China
%A <br>张静华
%A 唐亚俊
%A 于洋
%A 张济山
%A 胡壮麒
%A 廖华清
%J 材料科学技术学报
%D 1989
%I 
%X The features of microstructure and theirinfluence on mechanical properties onstress-rupture as well as thermal fatigue ofdirectionally solidified DZ38G nickel-base su-peralloy have been investigated.It has beenfound that the contents of carbides on grainboundaries are increased and morphology of γ'-precipitates has been changed after testing.Particularly γ'-precipitates coalesced intoraft-like in morphology perpendicular to theapplied stress-axis have been observed thathas no detrimental effect on the stress-rupturebehaviour.The tendency of σ-formation hasalso been discussed.The σ-phase can be avoidedwhen the process parameters are chosenappropriately during solidification.
%K superalloy
%K microstructure
%K directional solidification
%K crack propagation
%K segregation<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=324DC3CAB22330DB19158AE0A9B7BFA5&aid=C84F850C79CA925C&yid=1833A6AA51F779C1&vid=94C357A881DFC066&iid=38B194292C032A66&sid=AC1578C6BB9EBDEF&eid=FEF02B4635FE8227&journal_id=1005-0302&journal_name=材料科学技术学报&referenced_num=0&reference_num=0