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The evolution of grain-boundary cracking evaluated through in situ tensile-creep testing of Udimet alloy 188

Published online by Cambridge University Press:  31 January 2011

C.J. Boehlert ,
S.C. Longanbach ,
M. Nowell  and
S. Wright
C.J. Boehlert*
Affiliation:
Department of Chemical Engineering and Materials Science, Michigan State University, East Lansing, Michigan 48824
S.C. Longanbach
Affiliation:
Department of Chemical Engineering and Materials Science, Michigan State University, East Lansing, Michigan 48824
M. Nowell
Affiliation:
EDAX-TSL, Inc., Draper, Utah 84020
S. Wright
Affiliation:
EDAX-TSL, Inc., Draper, Utah 84020
*
a) Address all correspondence to this author. e-mail: [email protected]
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Abstract

In situ scanning electron microscopy was performed during elevated-temperature (⩽760 °C) tensile-creep deformation of a face-centered-cubic cobalt-based Udimet 188 alloy to characterize the deformation evolution and, in particular, the grain boundary-cracking evolution. In situ electron backscatter diffraction observations combined with in situ secondary electron imaging indicated that general high-angle grain boundaries were more susceptible to cracking than low-angle grain boundaries and coincident site-lattice boundaries. The extent of general high-angle grain-boundary cracking increased with increasing creep time. Grain-boundary cracking was also observed throughout subsurface locations as observed for postdeformed samples. The electron backscattered diffraction orientation mapping performed during in situ tensile-creep deformation proved to be a powerful means for characterizing the surface deformation evolution and in particular for quantifying the types of grain boundaries that preferentially cracked.

Keywords

CoGrain boundariesScanning electron microscopy (SEM)
Type
Articles
Information
Journal of Materials Research , Volume 23 , Issue 2 , February 2008 , pp. 500 - 506
Copyright
Copyright © Materials Research Society 2007

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References

REFERENCES

1Lissenden, C.J., Colaiuta, J.F.Lerch, B.A.: Hardening behavior of three metallic alloys under combined stress at elevated temperature. Acta Mech. 169, 53 2004CrossRefGoogle Scholar
2Zhu, D., Fox, D.S.Miller, R.A.: Oxidation and creep-enhanced fatigue of Haynes 188 alloy-oxide scale system under simulated pulse detonation engine conditions. Ceram. Eng. Sci. Proc. 23.4, 547 2002CrossRefGoogle Scholar
3Chen, J., Liaw, P.K., He, Y.H., Benson, M.L., Blust, J.W., Browning, P.F., Seeley, R.R.Karstom, D.L.: Tensile hold low-cycle fatigue behavior of cobalt-based HAYNES® 188 superalloy. Scripta Mater. 44, 859 2001CrossRefGoogle Scholar
4Whittenberger, J.D.: Mechanical properties of Haynes alloy 188 after exposure to LiF-22CaF2, air, and vacuum at 1093 K for periods up to 10,000 hours. J. Mater. Eng. Perf. 1, 469 1992CrossRefGoogle Scholar
5Whittenberger, J.D.: Mechanical properties of Haynes alloy 188 after 22,500 hours of exposure to LiF-22CaF2 and vacuum at 1093 K. J. Mater. Eng. Perf. 3, 754 1994CrossRefGoogle Scholar
6Herchenroeder, R.B., Matthews, S.J., Tackett, J.W.Wlodek, S.T.: Haynes alloy No. 188. Cobalt 54, 3 1972Google Scholar
7Lehockey, E.M.Palumbo, G.: On the creep behavior of grain boundary engineered nickel. Mater. Sci. Eng., A 237, 168 1997CrossRefGoogle Scholar
8Randle, V.: The Role of Coincident Site Lattice in Grain Boundary Engineering The Institute of Materials London 1996 1–104Google Scholar
9Randle, V.: Refined approaches to the use of the coincidence site lattice. J. Met. 50, 2 56Google Scholar
10Lehockey, E.M., Palumbo, G.Lin, P.: Improving the weldability and service performance of nickel- and iron-based suparalloys by grain boundary engineering. Metall. Mater. Trans. A 29, 3069 1998CrossRefGoogle Scholar
11Alexandreanu, B., Capell, B.M.Was, G.: Combined effect of special grain boundaries and grain boundary carbides on IGSCC. Mater. Sci. Eng., A 300, 94 2001CrossRefGoogle Scholar
12Lehockey, E.M., Palumbo, G., Lin, P.Brennenstuhl, A.M.: On the relationship between grain boundary character distribution and intergranular corrosion. Scripta Mater. 36(10), 1211 1997CrossRefGoogle Scholar
13Cheung, C., Erb, U.Palumbo, G.: Applications of grain boundary engineering concepts to alleviate intergranular cracking in alloys 600 and 690. Mater. Sci. Eng., A 185, 39 1994CrossRefGoogle Scholar
14Palumbo, G.Aust, K.T.: Special properties of Σ grain boundaries in Materials Interfaces: Atomic Level Structure and Properties, edited by D. Wolf and S. Yip (Chapman and Hall, New York) 1989 190–211Google Scholar
15Palumbo, G., Lehockey, E.M.Lin, P.: Applications for grain boundary engineered materials. J. Met. 50(2), 40 1998Google Scholar
16Lin, P., Palumbo, G., Erb, U.Aust, K.T.: Influence of grain boundary character distribution on sensitization and intergranular corrosion of alloy 600. Scripta Mater. 33(9), 1387 1995CrossRefGoogle Scholar
17Was, G.S., Thaveeprungsriporn, V.Crawford, D.C.: Grain boundary misorientation effects on creep and cracking in Ni-based alloys. J. Met. 50(2), 44 1998Google Scholar
18Thaveeprungsriporn, V.Was, G.: The role of coincidence-site-lattice boundaries in creep of Ni-16Cr-9Fe at 36 °C. Metall. Mater. Trans. A 28, 2101 1997CrossRefGoogle Scholar
19Palumbo, G.Aust, K.T.: Structure-dependence of intergranular corrosion in high purity nickel. Acta Metall. Mater. 38(11), 2343 1990CrossRefGoogle Scholar
20Boehlert, C.J., Cowen, C.J., Tamirisakandala, S., McEldowney, D.J.Miracle, D.B.: In situ scanning electron microscopy observations of tensile deformation in a boron-modified Ti-6Al-4V alloy. Scripta Metall. 55, 465 2006CrossRefGoogle Scholar
21Quast, J.P.Boehlert, C.J.: Comparison of the microstructure, tensile, and creep behavior for Ti-24Al-17Nb-0.66Mo (at.%) and Ti-24Al-17Nb-2.3Mo (at.%) alloys. Metall. Mater. Trans. A 38, 529 2007CrossRefGoogle Scholar
22Cowen, C.J.Boehlert, C.J.: Comparison of the microstructure, tensile, and creep behavior for Ti-22Al-26Nb (at.%) and Ti-22Al-26Nb-5B (at.%). Metall. Mater. Trans. A 38, 26 2007CrossRefGoogle Scholar
23Boehlert, C.J.: The effect of cold rolling on the creep behavior of Udimet alloy 188. World Sci. Eng. Acad. Soc. Trans. Heat Mass Transfer 1, 156 2006Google Scholar
24Watanabe, T.: An approach to grain-boundary design for strong and ductile polycrystals. Res. Mech. 11(1), 47 1984Google Scholar