合金元素钕对5621S钛合金氧化膜粘附性的影响及其作用机制

中国腐蚀与防护学报

1991, Vol. 11

Issue (3): 217-224

研究报告

本期目录 | 过刊浏览

合金元素钕对5621S钛合金氧化膜粘附性的影响及其作用机制

李美栓;李铁藩;周龙江

中国科学院金属腐蚀与防护研究所腐蚀科学开放室;中国科学院金属腐蚀与防护研究所腐蚀科学开放室;中国科学院金属腐蚀与防护研究所腐蚀科学开放室

THE EFFECT OF Nd ON THE ADHERENCE OF OXIDE SCALE FORMED ON Ti-5621S ALLOY

Li Meishuan Li Tiefan and Zhou Longjiang (Corrosion Science Laboratory; Institute of Corrosion and Protection of Metals; Academia Sinica)

全文: PDF(3660 KB)

摘要: 采用声发射技术研究了5621S及添加1％Nd的5621S钛合金,在700℃、800℃、850℃空气中所形成的氧化膜于冷却过程中的开裂和剥落。重点分析了含Nd合金所形成的复合氧化物“钉子”对氧化膜的粘附性的影响,“钉子”的存在对于膜内裂纹的扩展起着延长距离及阻碍作用。实验表明,含钕合金氧化膜的粘附性虽得到极大改善,而膜仍易于开裂。这是因为在冷却过程中,“钉子”受到大的压应力。如果“钉子”较大,就会成为萌生裂纹的起始点。文中还分析了裂纹产生机制。

Abstract：The spalling processes of the oxide scales formed on 5621S alloy(Ti-5Al-6Sn-2Zr-1Mo-0. 25Si)and 5621S alloy containing 1％Nd during cooling from 700℃, 800℃,850℃ were studied by using acoustic emission technique. The effect of composite oxide 'pegs' composed mainly of Nd_2O_3 on the adherence of oxide scales was analyzed. The 'pegs' can extend the distance between cracks and retard their movement in the oxide. The results indicate that the adherence of the oxide scale is improved due to the addition of Nd. However,the oxide scale still cracks easily. This is because that the 'pegs' suffer high compressive stress during cooling of specimen. If the 'pegs' are large enough, some of them can serve as centers of crack initiation. The mechanism of crack formation caused by the 'pegs' is also discussed.

收稿日期: 1991-06-25

基金资助:国家自然科学基金

	服务

	把本文推荐给朋友
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	李美栓
	李铁藩
	周龙江
44.8K

引用本文:

李美栓;李铁藩;周龙江. 合金元素钕对5621S钛合金氧化膜粘附性的影响及其作用机制[J]. 中国腐蚀与防护学报, 1991, 11(3): 217-224.
. THE EFFECT OF Nd ON THE ADHERENCE OF OXIDE SCALE FORMED ON Ti-5621S ALLOY. J Chin Soc Corr Pro, 1991, 11(3): 217-224.

链接本文:

https://www.jcscp.org/CN/ 或 https://www.jcscp.org/CN/Y1991/V11/I3/217

[1] Taniguichi,S.,Trans. Iron Steel Inst. Jpn.,25,3(1985)
[2] Srolovitz,D. J.,Ramanarayanan,T. A.,Oxid. Metals 22,133(1984)
[3] Evans,H. E.,Corr. Sci. 23,495(1983)
[4] Evans,A. G.,Cannon,R. M.,in "Oxidation of Metals and Associated Mass Transport",Dayananda,M. A.,et al., Ed.,A Publication of the Metallurgical Society, InC. America P135 (1987)
[5] Rahmel, A., Wood, G. C., Kofstad, P., Douglass, D. L., Ed., International Workshop on "Critical Issues Concerning the Mechanisms of High-Temperature Corrosion',Oxid. Metals,23,251 (1985)
[6] Kofstad, P., Rahmel, A., Rapp, R. A., Douglass, D. L., Ed., International Workshop on 'New Fundamentals of Scale Growth',Oxid. Metals, 32,125(1989)
[7] 李美栓,李铁藩等,待发表工作。
[8] 李铁藩,李美栓,中国腐蚀与防护学报,10,9(1990)
[9] 李铁藩,李美栓,理化检验(物理分册),26,29(1990)
[10] Coddet,C.,De Barros,G.,Beranger,G.,in"Conosion and Mechanical stress at High Temperature Proceeding of the European Symposium", Petten (N. H.), The Netherlands P417, (1981)
[11] 管世伟,中科院金属所硕士论文(1986)
[12] Hindam, H., Whittle, D. P., High Temperature Corrosion of Metals and Alloys, Proceeding JIMIS-3 (1982) , P. 261, (1983) ,Mt. Fuji,Lake Yamanaka,Japa

No related articles found!

Viewed

Full text

Abstract

Cited

Shared

Discussed