%0 Journal Article
%T FRACTURE MECHANISMS OF FFL MICROSTRUCTURE IN TiAl ALLOY<br>TiAl合金细小全层片组织断裂机理
%A ZHANG Ji
%A ZHANG Zhihong
%A ZOU Dunxu
%A ZHONG Zengyong
%A <br>张继
%A 张志宏
%A 邹敦叙
%A 仲增墉
%J 金属学报
%D 1996
%I 
%X The observations of the crack morpholgies on the side faces and fracture surfaces of the fracture toughness specimens and the TEM analyses of deformed structure around crack were conducted for the FFL microstructure which was obtained from the cast Ti-46.5 Al-2.5V-1.0Cr-0.2Ni(atomic fraction,%) alloy by a designed multiple heat treatment.The fracture characterizations of the FFL microstructure are similar to that of the FL microstructures.The functions of each shear ligment and total deformed volume accompanying the crack in the FFL microstructure were much smaller due to the significant decrease of the lamellar colony size.This led to a descent of fracture toughness of the FFL microstructure compared to the general FL microstructure.
%K TiAl alloy
%K FFL microstructure
%K fracture mechanism<br>细小全层片
%K 组织
%K 断裂
%K 钛铝合金
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=B061E1135F1CBDEE96CD96C109FEAD65&aid=59E9C3F3280F6AF65514CF1DB2CF0C70&yid=8A15F8B0AA0E5323&vid=9971A5E270697F23&iid=F3090AE9B60B7ED1&sid=3F10405738B4D004&eid=94D812A784CFA7CC&journal_id=0412-1961&journal_name=金属学报&referenced_num=6&reference_num=6