Microstructure evolution and mechanical properties of As-rolled Ni-20Cr-18W base superalloy

Jian Wang; Yinben Han; Tiebang Zhang; Rui Hu; Hongchao Kou; Jinshan Li; Pingxiang Zhang

Microstructure evolution and mechanical properties of As-rolled Ni-20Cr-18W base superalloy

Jian Wang, Yinben Han, Tiebang Zhang, Rui Hu, Hongchao Kou, Jinshan Li, Pingxiang Zhang

School of Materials Sience and Engineering

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

2 Scopus citations

Abstract

Microstructure and mechanical properties of solution strengthened Ni-20Cr-18W rolled superalloy were investigated. Microstructure features and phase composition investigations indicate the average equiaxed grain size of the as-rolled alloy is 20~30 μm (ASTM 7). Significant annealing twins can be observed within the microstructure and most M₆C-type carbides mainly disperse on the grain boundary. As-rolled Ni-20Cr-18W superalloy maintains a high tensile strength due to the small grain size. Low ductility of the as-rolled superalloy can be ascribed to M₆C-type carbides, which act as crack source on the grain boundary, and the transgranular fracture features with typical dimple-ductile characteristics are observed.

Original language	English
Pages (from-to)	3018-3021
Number of pages	4
Journal	Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
Volume	43
Issue number	12
State	Published - 1 Dec 2014

Keywords

Hot rolling
Mechanical properties
Microstructure
Ni-20Cr-18W base superalloy
Solution strengthening

Cite this

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title = "Microstructure evolution and mechanical properties of As-rolled Ni-20Cr-18W base superalloy",

abstract = "Microstructure and mechanical properties of solution strengthened Ni-20Cr-18W rolled superalloy were investigated. Microstructure features and phase composition investigations indicate the average equiaxed grain size of the as-rolled alloy is 20~30 μm (ASTM 7). Significant annealing twins can be observed within the microstructure and most M6C-type carbides mainly disperse on the grain boundary. As-rolled Ni-20Cr-18W superalloy maintains a high tensile strength due to the small grain size. Low ductility of the as-rolled superalloy can be ascribed to M6C-type carbides, which act as crack source on the grain boundary, and the transgranular fracture features with typical dimple-ductile characteristics are observed.",

keywords = "Hot rolling, Mechanical properties, Microstructure, Ni-20Cr-18W base superalloy, Solution strengthening",

author = "Jian Wang and Yinben Han and Tiebang Zhang and Rui Hu and Hongchao Kou and Jinshan Li and Pingxiang Zhang",

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TY - JOUR

T1 - Microstructure evolution and mechanical properties of As-rolled Ni-20Cr-18W base superalloy

AU - Wang, Jian

AU - Han, Yinben

AU - Zhang, Tiebang

AU - Hu, Rui

AU - Kou, Hongchao

AU - Li, Jinshan

AU - Zhang, Pingxiang

PY - 2014/12/1

Y1 - 2014/12/1

N2 - Microstructure and mechanical properties of solution strengthened Ni-20Cr-18W rolled superalloy were investigated. Microstructure features and phase composition investigations indicate the average equiaxed grain size of the as-rolled alloy is 20~30 μm (ASTM 7). Significant annealing twins can be observed within the microstructure and most M6C-type carbides mainly disperse on the grain boundary. As-rolled Ni-20Cr-18W superalloy maintains a high tensile strength due to the small grain size. Low ductility of the as-rolled superalloy can be ascribed to M6C-type carbides, which act as crack source on the grain boundary, and the transgranular fracture features with typical dimple-ductile characteristics are observed.

AB - Microstructure and mechanical properties of solution strengthened Ni-20Cr-18W rolled superalloy were investigated. Microstructure features and phase composition investigations indicate the average equiaxed grain size of the as-rolled alloy is 20~30 μm (ASTM 7). Significant annealing twins can be observed within the microstructure and most M6C-type carbides mainly disperse on the grain boundary. As-rolled Ni-20Cr-18W superalloy maintains a high tensile strength due to the small grain size. Low ductility of the as-rolled superalloy can be ascribed to M6C-type carbides, which act as crack source on the grain boundary, and the transgranular fracture features with typical dimple-ductile characteristics are observed.

KW - Hot rolling

KW - Mechanical properties

KW - Microstructure

KW - Ni-20Cr-18W base superalloy

KW - Solution strengthening

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M3 - 文章

AN - SCOPUS:84920868489

SN - 1002-185X

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SP - 3018

EP - 3021

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

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

IS - 12

ER -

Microstructure evolution and mechanical properties of As-rolled Ni-20Cr-18W base superalloy

Abstract

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