Atmosphere thermal-shock behavior of superalloy GH163 between 850°C and room temperature

Zhixin Meng; Laifei Cheng; Litong Zhang; Hui Mei; Chidong Liu

Atmosphere thermal-shock behavior of superalloy GH163 between 850°C and room temperature

Zhixin Meng, Laifei Cheng, Litong Zhang, Hui Mei, Chidong Liu

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

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

Abstract

Thermal-shock behavior of superalloy GH163 has been studied between 850°C and room temperature in different atmospheres. Mechanical properties, fracture surface and microstructure of the thermally shocked superalloys have been compared with those of as-received superalloy. It is shown that the Young's modulus, tensile strength and percentage reduction of area for the superalloy thermally-shocked in Ar (1 × 10⁵ Pa) decrease by 2%, 10% and 2%, respectively. The tensile fracture mode is ductile. By contrast, these three values of the thermally shocked superalloy in the mixed atmosphere of O₂ (0.16 × 10⁵ Pa) and Ar (0.84 × 10⁵ Pa) decease by 3%, 17% and 25%, respectively. The tensile fracture mode is brittle with a poorer thermal shock resistance of GH163 due to the grain coarsening and the oxidation along grain boundary in the mixed atmosphere O₂ and Ar.

Original language	English
Pages (from-to)	794-797
Number of pages	4
Journal	Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
Volume	37
Issue number	5
State	Published - May 2008

Keywords

Fracture surface
Mechanical properties
Microstructure
Superalloy GH163
Thermal shock

Cite this

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title = "Atmosphere thermal-shock behavior of superalloy GH163 between 850°C and room temperature",

abstract = "Thermal-shock behavior of superalloy GH163 has been studied between 850°C and room temperature in different atmospheres. Mechanical properties, fracture surface and microstructure of the thermally shocked superalloys have been compared with those of as-received superalloy. It is shown that the Young's modulus, tensile strength and percentage reduction of area for the superalloy thermally-shocked in Ar (1 × 105 Pa) decrease by 2%, 10% and 2%, respectively. The tensile fracture mode is ductile. By contrast, these three values of the thermally shocked superalloy in the mixed atmosphere of O2 (0.16 × 105 Pa) and Ar (0.84 × 105 Pa) decease by 3%, 17% and 25%, respectively. The tensile fracture mode is brittle with a poorer thermal shock resistance of GH163 due to the grain coarsening and the oxidation along grain boundary in the mixed atmosphere O2 and Ar.",

keywords = "Fracture surface, Mechanical properties, Microstructure, Superalloy GH163, Thermal shock",

author = "Zhixin Meng and Laifei Cheng and Litong Zhang and Hui Mei and Chidong Liu",

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TY - JOUR

T1 - Atmosphere thermal-shock behavior of superalloy GH163 between 850°C and room temperature

AU - Meng, Zhixin

AU - Cheng, Laifei

AU - Zhang, Litong

AU - Mei, Hui

AU - Liu, Chidong

PY - 2008/5

Y1 - 2008/5

N2 - Thermal-shock behavior of superalloy GH163 has been studied between 850°C and room temperature in different atmospheres. Mechanical properties, fracture surface and microstructure of the thermally shocked superalloys have been compared with those of as-received superalloy. It is shown that the Young's modulus, tensile strength and percentage reduction of area for the superalloy thermally-shocked in Ar (1 × 105 Pa) decrease by 2%, 10% and 2%, respectively. The tensile fracture mode is ductile. By contrast, these three values of the thermally shocked superalloy in the mixed atmosphere of O2 (0.16 × 105 Pa) and Ar (0.84 × 105 Pa) decease by 3%, 17% and 25%, respectively. The tensile fracture mode is brittle with a poorer thermal shock resistance of GH163 due to the grain coarsening and the oxidation along grain boundary in the mixed atmosphere O2 and Ar.

AB - Thermal-shock behavior of superalloy GH163 has been studied between 850°C and room temperature in different atmospheres. Mechanical properties, fracture surface and microstructure of the thermally shocked superalloys have been compared with those of as-received superalloy. It is shown that the Young's modulus, tensile strength and percentage reduction of area for the superalloy thermally-shocked in Ar (1 × 105 Pa) decrease by 2%, 10% and 2%, respectively. The tensile fracture mode is ductile. By contrast, these three values of the thermally shocked superalloy in the mixed atmosphere of O2 (0.16 × 105 Pa) and Ar (0.84 × 105 Pa) decease by 3%, 17% and 25%, respectively. The tensile fracture mode is brittle with a poorer thermal shock resistance of GH163 due to the grain coarsening and the oxidation along grain boundary in the mixed atmosphere O2 and Ar.

KW - Fracture surface

KW - Mechanical properties

KW - Microstructure

KW - Superalloy GH163

KW - Thermal shock

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AN - SCOPUS:45449120064

SN - 1002-185X

VL - 37

SP - 794

EP - 797

JO - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering

JF - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering

IS - 5

ER -

Atmosphere thermal-shock behavior of superalloy GH163 between 850°C and room temperature

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Keywords

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