显微组织对TC4ELI合金疲劳裂纹扩展路径及扩展速率的影响

马英杰; 雷家峰; 杨锐; 李晋伟; 唐振云

doi:10.3724/SP.J.1037.2010.00155

金属学报 >

2010 , Vol. 46 >Issue 9: 1086 - 1092

DOI: https://doi.org/10.3724/SP.J.1037.2010.00155

论文

显微组织对TC4ELI合金疲劳裂纹扩展路径及扩展速率的影响

马英杰 ,
雷家峰 ,
杨锐 ,
李晋伟 ,
唐振云

展开

1) 中国科学院金属研究所, 沈阳 110016
2) 中航工业北京航空制造工程研究所, 北京 100024

马英杰, 男, 1981年生, 助理研究员

收稿日期: 2010-04-02

修回日期: 2010-06-29

网络出版日期: 2010-09-11

收起

INFLUENCES OF MICROSTRUCTURE ON FATIGUE CRACK PROPAGATING PATH AND CRACK GROWTH RATES IN TC4ELI ALLOY

MA Yang-Jie ,
LEI Jia-Feng ,
YANG Rui ,
LI Jin-Wei ,
TANG Zhen-Yun

Expand

1) Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016
2) AVIC Beijing Aeronautical Manufacturing Technology Research Institute, Beijing 100024

Received date: 2010-04-02

Revised date: 2010-06-29

Online published: 2010-09-11

Fold

摘要

利用SEM观察了疲劳裂纹在具有片层组织的TC4ELI合金中的扩展路径, 通过统计疲劳裂纹与α片层所呈的角度, 分析了α和 β两相晶体学取向对疲劳裂纹扩展路径的影响. 基于对疲劳裂纹扩展路径的研究, 测试并讨论了片层组织中晶粒和α片层对近门槛值阶段及Paris区阶段疲劳裂纹扩展速率的影响. 研究表明, 疲劳裂纹在片层组织中扩展时, 疲劳裂纹在穿过α片层时倾向于沿平行或垂直于α片层的方向扩展, 导致疲劳裂纹扩展路径每隔几个片层宽度出现扩展台阶; 影响近门槛值阶段疲劳裂纹扩展速率的主要因素是α片层厚度, 而与晶粒尺寸无关; 在Paris阶段, 晶粒尺寸、α片层厚度和片层长/宽比均对裂纹扩展速率产生影响.

关键词： 钛合金; 显微组织; 裂纹扩展路径; 裂纹扩展速率

本文引用格式

马英杰 , 雷家峰 , 杨锐 , 李晋伟 , 唐振云 . 显微组织对TC4ELI合金疲劳裂纹扩展路径及扩展速率的影响[J]. 金属学报, 2010 , 46(9) : 1086 -1092 . DOI: 10.3724/SP.J.1037.2010.00155

Abstract

Long fatigue crack propagating path in TC4ELI alloy with lamellar microstructure was studied by SEM. Statistics of angles between cracking path and α lamella exhibits that fatigue crack is apt to parallel α lamella or cross α lamella vertically, which will induce the ladder shape of crack propagating path. The parallel and vertical propagating patterns were interpreted with the weak α/β interface and the orientation of hcp α-Ti unit cell. Analysis of crack propagating path helps to understand the effect of microstructure on fatigue crack growth (FCG) rates. FCG rates tests with different microstructures reveal that in near fatigue crack threshold (ΔK_th) region the thickness of α lamella is the main influential factor on fatigue crack growth rate da/dN, and the da/dN seems impervious to β grain size. However, in Paris region the FCG rates are both influenced by grain size and lamellar thickness.

Key words： titanium alloy; microstructure; crack propagating path; crack growth rate

参考文献

[1]Sinha V, Soboyejo W O. Mater Sci Eng A, 2001; 319-321: 607 [2]Sansoz F, Ghonem H. Mater Sci Eng A, 2003; 356: 81 [3]Lindigkeit J, Terlinde G, Gysler A, Lütjering G. Acta Metall, 1979; 27: 1717 [4]Carter R D, Lee E W, Starke E A, Beevers C. J Met Trans, 1984; 15A: 555 [5]Suresh S, Fatigue Met Trans A, 1985; 16: 249 [6]Suresh S. Translated by Wang Z G, Zang Q Sh, Li Sh X. Fatigue of Material. Beijing: Defense Industrial Press, 1999: 355 (Suresh S著, 王中光, 臧启山, 李守新译. 材料的疲劳, 北京: 国防工业出版社, 1999: 355) [7]Goswami T. Mater Design. 2003; 24: 423 [8]Ding J, Hall R, Byrne J. Int J Fatigue. 2005; 27: 1551 [9]Shademan S, Sinha V, Soboyejo A B O, Soboyejo W O. Mech of Mater, 2004; 36: 161 [10]Jata K V, Starke E A. J Met Trans A, 1986; 17A: 1011 [11]Suresh S, Zamiski G F, Ritchie R O. Met Trans A, 1981; 12A: 1435 [12]Vasudevan A K, Suresh S. Met Trans A, 1982; 13A: 2271 [13]Lütjering G. Mater Sci Eng A, 1998; 243: 32. [14]Lütjering G. Mater Sci Eng A, 1999; 263: 117 [15]Filip R, Kubiak K, Ziaja W, Sieniawski J. J Mater Processing Tech, 2003; 133: 84 [16]Li Sh K, Xiong B Q, Hui S X, Ye W J, Yu Y. Mater Sci Eng A, 2007; 460–461: 140 [17]Ma Y J, Liu J R, Lei J F, Liu Y Y, Yang R. Chinese J Mater Research, 2008; 22: 555 (马英杰, 刘建荣, 雷家峰, 刘羽寅, 杨锐. 材料研究学报, 2008; 22: 555) [18]Gil F J, Planell J A. Mater Sci Eng A, 2000; 283: 17 [19]Semiatin S L, Fagin P N, Glavicic M G, Ivasishin O M. Mater Sci Eng A, 2001; 299: 225 [20]Semiatin S L, Soper J C, Sukonnik I M. Scri Met Meterialia, 1994; 30: 951 [21]Борисова E A. Translated by Chen Sh Q. Metallography of Titanium Alloy. Beijing: Defense Industrial Press, 1986: 235 (鲍利索娃E A 著. 陈石卿译. 钛合金金相学. 北京：国防工业出版社，1986: 235). [22]Ma Y J, Liu J R, Lei J F, Liu Y Y, Yang R. Rare Met Mater Eng, 2009; 38: 976 (马英杰, 刘建荣, 雷家峰, 刘羽寅, 杨锐. 稀有金属材料与工程, 2009; 38: 976) [23]Ma Y J, Liu J R, Lei J F, Li Y R, Liu Y Y, Yang R. Acta Metall Sin, 2008; 44: 973 (马英杰, 刘建荣, 雷家峰, 李玉兰, 刘羽寅, 杨锐. 金属学报, 2008; 44: 973) [24]Ma Y J, Liu J R, Lei J F, Liu Y Y, Yang R. Rare Met Mater Eng, 2008; 37(suppl): 633 (马英杰, 刘建荣, 雷家峰, 刘羽寅，杨锐. 稀有金属材料与工程, 2008; 37(suppl): 633) [25]Xu F. PhD Thesis, Institute of Metal Research CAS, 2008 (徐峰, 博士学位论文, 中国科学院金属研究所, 2008) [26]Savage M F. Mater Sci Eng A, 2001; 319–321: 398 [27]Sansoz F, Ghonem H. Mater Sci Eng A, 2003; 356: 81 [28]Li Sh K, Xiong B Q, Hui S X, Ye W J, Yu Y. Mater Characterization, 2008; 59: 397 [29]Schroeder G, Albrecht J, Luetjering G. Mater Sci Eng A, 2001; 319–321: 602

Options

文章导航

模态框（Modal）标题

摘要

本文引用格式

Abstract

参考文献