Tensile Creep Behaviors of a P-Type Structure Single Crystal Nickel-Base Superalloy

Abstract:

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By means of pre-compressive stress treated, the cubic γ΄ phase in alloy is transformed into the P-type structure along the direction parallel to the applied stress axis. The influence of the P-type structure on the creep lifetimes of alloy has been investigated by means of the tensile creep testing and microstructure observation. Results show that, compared with the A structure alloy, the P-type γ′ rafted alloy displays a shorter creep lifetimes under the experimental conditions. The microstructure evolution of the P-type structure alloy occurs during tensile creep, in which the p-type γ′ rafted phase is transformed into the N-type structure. The microstructure evolution alloy reduces the creep resistance of the alloy, this is one of the main reasons for reducing the creep resistance of the one.

Info:

Periodical:

Materials Science Forum (Volumes 546-549)

Edited by:

Yafang Han et al.

Pages:

1345-1348

Citation:

H. Q. Du et al., "Tensile Creep Behaviors of a P-Type Structure Single Crystal Nickel-Base Superalloy", Materials Science Forum, Vols. 546-549, pp. 1345-1348, 2007

Online since:

May 2007

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$38.00

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