Crack Growth Rate Behavior of a Titanium-Aluminide Alloy During Isothermal and Nonisothermal Conditions

Author:

Pernot J. J.1,Mall S.2,Nicholas T.1

Affiliation:

1. Materials Directorate, Wright Laboratory, Wright-Patterson AFB, OH 45433

2. Department of Aeronautics and Astronautics, Air Force Institute of Technology, Wright-Patterson AFB, OH 45433

Abstract

Observations of isothermal fatigue, isothermal fatigue with superimposed load hold times, and thermomechanical fatigue (TMF) crack growth rate behavior of Ti-24Al-11Nb are presented and compared with results from previous studies on titanium and nickel-base superalloys. Elevated-temperature crack growth mechanisms in this alloy, which involve fatigue, oxidation and creep, and the influence of frequency, temperature, and hold-time are discussed. These mechanisms are used to interpret the observations of TMF crack growth. The limitations of current crack growth rate models based on the linear-elastic fracture mechanics parameter, K, are addressed.

Publisher

ASME International

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science

Reference31 articles.

1. Balsone, S. J., Khobaib, M., Maxwell, D. C., and Nicholas, T., “Environment and Frequency Effects on Crack Growth in a Titanium Aluminide Alloy,” Elevated Temperature Crack Growth, MD-Vol. 18, S. Mall and T. Nicholas, eds., American Society of Mechanical Engineers, New York, 1990, pp. 87–91.

2. Mall S. , NicholasT., PernotJ. J., and BurgessD. G., “Crack Growth in a Titanium Aluminide Alloy under Thermal Mechanical Cycling,” Fatigue Fract. Engng. Mater. Struct., Vol. 14, 1991, pp. 79–87.

3. Larsen, J. M., Williams, K. A., Balsone, S. J., and Stucke, M. A., “Titanium Aluminides for Aerospace Applications,” Proceedings from the 1989 Symposium on High Temperature Aluminides and Intermetallics, 1989.

4. Nicholas T. , HeilM. L., and HaritosG. K., “Predicting Crack Growth under Thermo-Mechanical Cycling,” Int. Journal Fracture, Vol. 41, 1989, pp. 157–176.

5. Mall S. , StaubsE. A., and NicholasT., “Investigation of Creep/Fatigue Interaction on Crack Growth in a Titanium Aluminide Alloy,” ASME JOURNAL OF ENGINEERING MATERIALS AND TECHNOLOGY, Vol. 112, 1990, pp. 435–441.

Cited by 2 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3