Evolution of Internal Stress Field in Ni-Base Superalloy through Creep Deformation

Abstract:

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Internal elastic strain, and its change accompanied with the raft formation during creep deformation in the Ni-based single crystal superalloy (TMS-26) have been investigated by X-ray diffractometry. The elastic strain caused by the lattice misfit between g and g' phases has markedly been changed by creep deformation especially in the directions perpendicular to the [001] tensile axis. The change in the elastic strain can be explained by the effect of creep dislocations stacked at g/g' interfaces. The evolution of the elastic stress field estimated from the elastic strain has explained well the transition from primary creep stage to the second one.

Info:

Periodical:

Materials Science Forum (Volumes 475-479)

Main Theme:

Edited by:

Z.Y. Zhong, H. Saka, T.H. Kim, E.A. Holm, Y.F. Han and X.S. Xie

Pages:

619-622

DOI:

10.4028/www.scientific.net/MSF.475-479.619

Citation:

K. Tanaka et al., "Evolution of Internal Stress Field in Ni-Base Superalloy through Creep Deformation", Materials Science Forum, Vols. 475-479, pp. 619-622, 2005

Online since:

January 2005

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Price:

$35.00

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