0
Research Papers: Gas Turbines: Structures and Dynamics

Investigation on Material's Fatigue Property Variation Among Different Regions of Directional Solidification Turbine Blades—Part II: Fatigue Tests on Bladelike Specimens

[+] Author and Article Information
Xiaojun Yan

School of Energy and Power Engineering,
Beihang University,
Beijing 100191, China;
Collaborative Innovation Center of
Advanced Aero-Engine,
Beijing 100191, China
e-mail: yanxiaojun@buaa.edu.cn

Mingjing Qi

School of Energy and Power Engineering,
Beihang University,
Beijing 100191, China
e-mail: qmj@sjp.buaa.edu.cn

Ying Deng

School of Energy and Power Engineering,
Beihang University,
Beijing 100191, China
e-mail: yingdeng@sjp.buaa.edu.cn

Xia Chen

School of Energy and Power Engineering,
Beihang University,
Beijing 100191, China
e-mail: zuoweicat@126.com

Ruijie Sun

School of Energy and Power Engineering,
Beihang University,
Beijing 100191, China
e-mail: srj_0515@163.com

Lianshan Lin

Oak Ridge National Laboratory,
Oak Ridge, TN 37831
e-mail: lianshanlin@hotmail.com

Jingxu Nie

School of Energy and Power Engineering,
Beihang University,
Beijing 100191, China
e-mail: buaa405@163.com

1Corresponding author.

Contributed by the Structures and Dynamics Committee of ASME for publication in the JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Manuscript received June 2, 2014; final manuscript received June 4, 2014; published online July 22, 2014. Editor: David Wisler.

J. Eng. Gas Turbines Power 136(10), 102503 (Jul 22, 2014) (7 pages) Paper No: GTP-14-1263; doi: 10.1115/1.4027929 History: Received June 02, 2014; Revised June 04, 2014

Part I of this investigation is mainly focused on fatigue tests of full scale turbine blades, based on the observation of the phenomena that some directional solidification (DS) blades do not fracture at their maximum stress region, and it has been revealed that there exists material's fatigue property variation among different regions of DS blades. For more in-depth and quantitative study on the fatigue property variation, Part II of this investigation designs and fabricates four types of DS bladelike specimens (including platform-, shroud-, body-, and rootlike specimens), which imitate the geometry, microstructure, and stress features of a full scale turbine blade on its four typical regions, to conduct the low cycle fatigue (LCF) tests. Test results show that the bodylike specimen has the best fatigue performance, and under the same stress state, the fatigue life of root-, shroud-, and platformlike specimens are 29.1%, 28.5%, and 13.7% of the bodylike specimen, respectively. The large material's fatigue property variation among different regions of DS blades should be considered in future blade life design.

FIGURES IN THIS ARTICLE
<>
Copyright © 2014 by ASME
Your Session has timed out. Please sign back in to continue.

References

Yan, X., and Nie, J., 2008, “Creep-Fatigue Tests on Full Scale Directionally Solidified Turbine Blades,” ASME J. Eng. Gas Turbines Power, 130(4), p. 044501. [CrossRef]
Versnyder, F. I., and Shank, M. E., 1970, “The Development of Columnar Grain and Single Crystal High Temperature Materials Through Directional Solidification,” Mater. Sci. Eng., 6(4), pp. 213–247. [CrossRef]
Kermanpur, A., Varahraam, N., Engilehei, E., Mohammadzadeh, M., and Davami, P., 2000, “Directional Solidification of Ni Base Superalloy In738lc to Improve Creep Properties,” Mater. Sci. Technol., 16(5), pp. 579–586. [CrossRef]
Duhl, D. N., and Thompson, E. R., 1977, “Directional Structures for Advanced Aircraft Turbine Blades,” J. Aircr., 14(6), pp. 521–526. [CrossRef]
Wang, W., Kermanpur, A., Lee, P. D., and Mclean, M., 2003, “Simulation of Dendritic Growth in the Platform Region of Single Crystal Superalloy Turbine Blades,” J. Mater. Sci., 38(21), pp. 4385–4391. [CrossRef]
Alexandre, F., Deyber, S., and Pineau, A., 2004, “Modelling the Optimum Grain Size on the Low Cycle Fatigue Life of a Ni Based Superalloy in the Presence of Two Possible Crack Initiation Sites,” Scr. Mater., 50(1), pp. 25–30. [CrossRef]
Arakere, N. K., and Swanson, G., 2002, “Effect of Crystal Orientation on Fatigue Failure of Single Crystal Nickel Base Turbine Blade Superalloys,” ASME J. Eng. Gas Turbines Power, 124(1), pp. 161–176. [CrossRef]
Zhao, Y., Wang, L., Li, H., Yu, T., and Liu, Y., 2008, “Effects of Recrystallization on the Low Cycle Fatigue Behavior of Directionally Solidified Superalloy Dz40m,” Rare Met., 27(4), pp. 425–428. [CrossRef]
Sun, R. J., Yan, X. J., and Deng, Y., 2008, “Microstructure Simulation of Blade Like Specimens During Directional Solidification,” 2nd International Symposium on Jet Propulsion and Power Engineering (ISJPPE), Guilin, China, September 22–26, pp. 280–284.
Rappaz, M., and Rettenmayr, M., 1998, “Simulation of Solidification,” Curr. Opin. Solid State Mater. Sci., 3(3), pp. 275–282. [CrossRef]
Marx, V., Reher, F. R., and Gottstein, G., 1999, “Simulation of Primary Recrystallization Using a Modified Three-Dimensional Cellular Automaton,” Acta Mater., 47(4), pp. 1219–1230. [CrossRef]
Oakley, S. Y., and Nowell, D., 2007, “Prediction of the Combined High- and Low-Cycle Fatigue Performance of Gas Turbine Blades After Foreign Object Damage,” Int. J. Fatigue, 29(1), pp. 69–80. [CrossRef]
Issler, S., and Roos, E., 2003, “Numerical and Experimental Investigations Into Life Assessment of Blade-Disc Connections of Gas Turbines,” Nucl. Eng. Des., 226(2), pp. 155–164. [CrossRef]
Richter, K.-H., Orban, S., and Nowotny, S., 2004, “Laser Cladding of the Titanium Alloy Ti6242 to Restore Damaged Blades,” 23rd International Congress on Applications of Lasers and Electro-Optics (ICALEO), San Francisco, CA, October 4–7.

Figures

Grahic Jump Location
Fig. 1

Schematic of a typical DS process

Grahic Jump Location
Fig. 2

Bladelike specimens and their corresponding regions of the full scale blade

Grahic Jump Location
Fig. 4

Microstructure comparison between bladelike specimens and the full scale blade

Grahic Jump Location
Fig. 5

von Mises stress contours of the bladelike specimens

Grahic Jump Location
Fig. 6

Comparison of stress distribution of the bladelike specimens

Grahic Jump Location
Fig. 7

LCF test system and the fixtures of bladelike specimens

Grahic Jump Location
Fig. 8

Photo of tested specimens

Grahic Jump Location
Fig. 9

Fatigue property variation among different regions of the DS blade

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In