Thermal fatigue behavior of Ni3Al based superalloy IC6E

Lei Ji; Shu Suo Li; Ya Fang Han; Li Wu Jiang

Thermal fatigue behavior of Ni₃Al based superalloy IC6E

Lei Ji^*
, Shu Suo Li
, Ya Fang Han
, Li Wu Jiang

^*Corresponding author for this work

Research institute of Aero-Engine

Beihang University

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

The thermal fatigue behavior of Ni₃Al based superalloy IC6E during the cycles between 900°C/1 000°C and the room temperature was investigated. The experimental results indicate that the primary and secondary thermal fatigue cracks initiate inside or round the bondes and then spread away along grain boundaries and/or in interdendritic areas. The fracture of borides and their separation from the matrix at interfaces are mainly responsible for the crack initiation and its spreading. At temperatures higher than 1 000°C, the grain boundary oxidation combined with cyclic stresses accelerates the crack growth.

Original language	English
Pages (from-to)	S1-S4
Journal	Chinese Journal of Aeronautics
Volume	19
Issue number	SUPPL.
State	Published - Dec 2006

Keywords

Cast superalloy
NiAl
Thermal fatigue

Cite this

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title = "Thermal fatigue behavior of Ni3Al based superalloy IC6E",

abstract = "The thermal fatigue behavior of Ni3Al based superalloy IC6E during the cycles between 900°C/1 000°C and the room temperature was investigated. The experimental results indicate that the primary and secondary thermal fatigue cracks initiate inside or round the bondes and then spread away along grain boundaries and/or in interdendritic areas. The fracture of borides and their separation from the matrix at interfaces are mainly responsible for the crack initiation and its spreading. At temperatures higher than 1 000°C, the grain boundary oxidation combined with cyclic stresses accelerates the crack growth.",

keywords = "Cast superalloy, NiAl, Thermal fatigue",

author = "Lei Ji and Li, \{Shu Suo\} and Han, \{Ya Fang\} and Jiang, \{Li Wu\}",

year = "2006",

month = dec,

language = "英语",

volume = "19",

pages = "S1--S4",

journal = "Chinese Journal of Aeronautics",

issn = "1000-9361",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Thermal fatigue behavior of Ni3Al based superalloy IC6E

AU - Ji, Lei

AU - Li, Shu Suo

AU - Han, Ya Fang

AU - Jiang, Li Wu

PY - 2006/12

Y1 - 2006/12

N2 - The thermal fatigue behavior of Ni3Al based superalloy IC6E during the cycles between 900°C/1 000°C and the room temperature was investigated. The experimental results indicate that the primary and secondary thermal fatigue cracks initiate inside or round the bondes and then spread away along grain boundaries and/or in interdendritic areas. The fracture of borides and their separation from the matrix at interfaces are mainly responsible for the crack initiation and its spreading. At temperatures higher than 1 000°C, the grain boundary oxidation combined with cyclic stresses accelerates the crack growth.

AB - The thermal fatigue behavior of Ni3Al based superalloy IC6E during the cycles between 900°C/1 000°C and the room temperature was investigated. The experimental results indicate that the primary and secondary thermal fatigue cracks initiate inside or round the bondes and then spread away along grain boundaries and/or in interdendritic areas. The fracture of borides and their separation from the matrix at interfaces are mainly responsible for the crack initiation and its spreading. At temperatures higher than 1 000°C, the grain boundary oxidation combined with cyclic stresses accelerates the crack growth.

KW - Cast superalloy

KW - NiAl

KW - Thermal fatigue

UR - https://www.scopus.com/pages/publications/34247101128

M3 - 文章

AN - SCOPUS:34247101128

SN - 1000-9361

VL - 19

SP - S1-S4

JO - Chinese Journal of Aeronautics

JF - Chinese Journal of Aeronautics

IS - SUPPL.

ER -

Thermal fatigue behavior of Ni₃Al based superalloy IC6E

Abstract

Keywords

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