Thermal cycle fatigue behaviors of a single crystal Ni3Al base alloy

Fulin Li; Shusuo Li; Yuxiao Wu; Liwu Jiang; Yafang Han

doi:10.1016/j.proeng.2011.12.564

Thermal cycle fatigue behaviors of a single crystal Ni₃Al base alloy

Fulin Li
, Shusuo Li^*
, Yuxiao Wu
, Liwu Jiang
, Yafang Han

^*Corresponding author for this work

Research institute of Aero-Engine

Beihang University
University of Science and Technology Beijing
Beijing Institute of Aeronautical Materials

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

11 Scopus citations

Abstract

The thermal cycle fatigue behaviors of a single crystal Ni₃Al base alloy named as IC6SX have been investigated under the test condition of 1000°C←→15°C. The experimental results showed that the thermal fatigue resistance of the transversal specimens of the alloy was superior to that of the longitudinal specimens. The cracks of the specimens propagated along the interdendritic region more easily than the dendrite, and might pass through the dendrite due to the accumulation of the thermal strain. Optical Microscopy (OM) and Electron Probe X-ray Microanalysis (EPXM) were adopted to observe the crack growth and the microstructural evolution, and composition near the fatigue crack, respectively. The mechanism of the thermal fatigue damage of the alloy was discussed.

Original language	English
Title of host publication	2011 Chinese Materials Conference
Publisher	Elsevier Ltd
Pages	1141-1149
Number of pages	9
ISBN (Print)	9781627485838
DOIs	https://doi.org/10.1016/j.proeng.2011.12.564
State	Published - 2012

Publication series

Name	Procedia Engineering
Volume	27
ISSN (Print)	1877-7058

Keywords

Dendrite growth direction
High temperature oxidation
Thermal cycle fatigue

Access to Document

10.1016/j.proeng.2011.12.564

Cite this

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title = "Thermal cycle fatigue behaviors of a single crystal Ni3Al base alloy",

abstract = "The thermal cycle fatigue behaviors of a single crystal Ni3Al base alloy named as IC6SX have been investigated under the test condition of 1000°C←→15°C. The experimental results showed that the thermal fatigue resistance of the transversal specimens of the alloy was superior to that of the longitudinal specimens. The cracks of the specimens propagated along the interdendritic region more easily than the dendrite, and might pass through the dendrite due to the accumulation of the thermal strain. Optical Microscopy (OM) and Electron Probe X-ray Microanalysis (EPXM) were adopted to observe the crack growth and the microstructural evolution, and composition near the fatigue crack, respectively. The mechanism of the thermal fatigue damage of the alloy was discussed.",

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AU - Li, Fulin

AU - Li, Shusuo

AU - Wu, Yuxiao

AU - Jiang, Liwu

AU - Han, Yafang

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Y1 - 2012

N2 - The thermal cycle fatigue behaviors of a single crystal Ni3Al base alloy named as IC6SX have been investigated under the test condition of 1000°C←→15°C. The experimental results showed that the thermal fatigue resistance of the transversal specimens of the alloy was superior to that of the longitudinal specimens. The cracks of the specimens propagated along the interdendritic region more easily than the dendrite, and might pass through the dendrite due to the accumulation of the thermal strain. Optical Microscopy (OM) and Electron Probe X-ray Microanalysis (EPXM) were adopted to observe the crack growth and the microstructural evolution, and composition near the fatigue crack, respectively. The mechanism of the thermal fatigue damage of the alloy was discussed.

AB - The thermal cycle fatigue behaviors of a single crystal Ni3Al base alloy named as IC6SX have been investigated under the test condition of 1000°C←→15°C. The experimental results showed that the thermal fatigue resistance of the transversal specimens of the alloy was superior to that of the longitudinal specimens. The cracks of the specimens propagated along the interdendritic region more easily than the dendrite, and might pass through the dendrite due to the accumulation of the thermal strain. Optical Microscopy (OM) and Electron Probe X-ray Microanalysis (EPXM) were adopted to observe the crack growth and the microstructural evolution, and composition near the fatigue crack, respectively. The mechanism of the thermal fatigue damage of the alloy was discussed.

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KW - High temperature oxidation

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