钛合金TC11微动疲劳特性研究

石炜; 温卫东; 崔海涛

钛合金TC11微动疲劳特性研究

1.
南京航空航天大学能源与动力学院, 南京 210016

详细信息

作者简介:
石炜(1980-)，博士研究生，研究方向为结构疲劳与断裂，nuaashiwei@nuaa.edu.cn;温卫东(联系人)，教授，gswwd@nuaa.edu.cn

石炜(1980-)，博士研究生，研究方向为结构疲劳与断裂，nuaashiwei@nuaa.edu.cn;温卫东(联系人)，教授，gswwd@nuaa.edu.cn

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出版历程
- 收稿日期: 2012-11-29
- 刊出日期: 2015-06-10

Exploring Fretting Fatigue Behavior of TC11

1.
College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016

摘要

摘要: 以航空发动机榫连接结构微动疲劳问题的简化模型为研究对象,设计和制造了一套采用液压加载方式来实现微动疲劳法向载荷施加的试验装置,用于研究钛合金TC11微动疲劳的损伤过程,并对试验过程中在接触区域萌生裂纹的试件断口进行观测。研究结果表明:保持法向载荷恒定不变,增加轴向载荷将减少微动疲劳寿命。同样,保持轴向载荷恒定不变,法向载荷对微动疲劳寿命影响不如轴向载荷显著。另外,等效应力和滑移幅值是微动疲劳寿命的主要影响因素。
- 微动损伤 /
- 试验装置 /
- 微动疲劳寿命 /
- 轴向载荷 /
- 法向载荷
Abstract: The simplified model of the fretting fatigue of dovetail joints between the blade of an aero-engine and its disk was studied. An apparatus for fretting fatigue test was used to characterize the fretting fatigue damage process for titanium alloy TC11 and to observe the crack of the fracture specimen which is initiated in and around the contact zone during the test. The test results show that the number of crack initiation cycles decreases with an increase in the axial force that keeps normal force at a constant value. Also, the influence of the normal force on the crack initiation cycle is not obvious because of the influence of the axial force. In addition, the von Mises equivalent stress and the slip amplitude are the main causes for the reduction of the number of crack initiation cycles.
- aircraft engines /
- axial force /
- crack initiation cycles /
- crack initiation /
- disks(structural components)

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参考文献(10)

[1]	周仲荣, Léo Vincent. 微动磨损[M]. 北京: 科学出版社,2002 Zhou Z R, Léo Vincent. Fretting wear[M]. Beijing: Science Press,2002 (in Chinese)
[2]	Waterhouse R B. The problems of fretting fatigue testing[C] // Standardization of Fretting Fatigue Test Methods and Equipment. ASTM STP 1159, Philadelphia: American Society for Testing and Materials, 1992: 13-22
[3]	何明鉴. 机械构件的微动疲劳[M]. 北京: 国防工业出版社,1994 He M J. Fretting fatigue of mechanical component[M]. Beijing: National Defence Industry Press,1994 (in Chinese)
[4]	Suresh S. 材料的疲劳[M]. 王中光, 译,2 版. 北京: 国防工业出版社,1999 Suresh S. Fatigue of Materials[M]. Wang Z G. (2nd) Beijing: National Defence Industry Press,1999 (in Chinese)
[5]	Szolwinski M P, Farris T N. Observation, analysis and prediction of fretting fatigue in 2024-T351 aluminum alloy[J]. Wear,1998,221: 24-36
[6]	ASTM E2789-2010. Standard guide for fretting fatigue testing[S]. West Conshohocken, Pennsylvania, ASTM International, 2010. DOI: 10. 1520 /C0033-03
[7]	Dobromirski J M. Variables of fretting process: are there 50 of them[C] //Standardization of Fretting Fatigue: Test Methods and Equipment, ASTM STP 1159, Philadelphia: American Society of Testing and Materials,1992: 60-66
[8]	古远兴. 高低周复合载荷下燕尾榫结构微动疲劳寿命研究[D]. 南京: 南京航空航天大学,2007 Gu Y X. Research on fretting fatigue life of dovetail joint under HCF-LCF load[D]. Nanjing: Nanjing University of Aeronautics and Astronautics,2007 (in Chinese)
[9]	Fadag H A, Mall S, Jain V K. A finite element analysis of fretting fatigue crack growth behavior in Ti-6Al-4V[J]. Engineering Fracture Mechanics,2008,(75): 1384-1399
[10]	《中国航空材料手册》编辑委员会. 中国航空材料手册(第 4 卷) , 钛合金铜合金[S]. 中国标准出版社,2001 The Editorial Board of China Aeronautical Materials Handbook. China aeronautical materials handbook volume 4, titanium alloy, copper alloy[S]. Beijing: China Standards Press,2001 (in Chinese)