摘要
研究了Ｎｂ、Ｍｏ、Ｖ三种元素的不同含量对Ｔｉ＿３Ａｌ合金７００℃、空气气氛下抗氧化规律的影响。通过实验发现Ｔｉ＿３Ａｌ基合金在７００℃空气中会迅速氧化，表层的氧化物缺乏保护性，基体表面约２０μｍ厚受到氧的污染。Ｎｂ的过量加入（＞１１ａｔ－％）将导致抗氧化性能降低；Ｍｏ与Ｖ的加入会使Ｔｉ－Ａｌ－Ｎｂ系Ｔｉ＿３Ａｌ基合金的抗氧化性能明显降低。
In this paper,effect of Nb,Mo,V contents on oxidation properties(700℃,in air)of Ti3Al based al-loys has been studied.It has been shown that the alloys would oxidize rapidly as exposed at 700℃ in theair,After oxidation exposure,about 20μm thick alloy surface layer has been found with dlssolved oxida-tion,in account of the poor protection of the oxide scale,An excessive addition of Nb will decrease the oxi-dation resistance,while dominant reduction of oxidation resistance of Ti3Al-Nb system alloy will be re-sulted by the addition of Mo and V.
出处
《航空材料学报》
CAS
CSCD
1994年第2期17-22,共6页
Journal of Aeronautical Materials
基金
863科学基金
