Growth twins of R phase in the high Mo-containing nickel-base single crystal superalloy

Shiyu Ma; Jianxin Zhang; Pan Li; Youjian Zhang; Huixin Jin; Wenyang Zhang; Xueqiao Li; Shengcheng Mao; Jide Liu; Xinguang Wang; Yizhou Zhou; Xiaofeng Sun; Wei Ni

doi:10.1088/2053-1591/aae251

Growth twins of R phase in the high Mo-containing nickel-base single crystal superalloy

Shiyu Ma, Jianxin Zhang, Pan Li, Youjian Zhang, Huixin Jin, Wenyang Zhang, Xueqiao Li, Shengcheng Mao, Jide Liu, Xinguang Wang, Yizhou Zhou, Xiaofeng Sun, Wei Ni

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

Abstract

The topological close packing phases in nickel-base single crystal superalloy aged at 1100 °C for 1000 h was investigated by the spherical aberration-corrected transmission electron microscope. There are R phases precipitated in the matrix, with the hexagonal lattice parameter as a = b = 11.154 Å, c = 17.782 Å. There are lamellar contrasts at the tip of the R phase, which were recognized to be {1-10-1} 01-1-1 type growth twins. The HRTEM results confirm that the formation of growth twins in R phase can release misfit stress to coordinate the distorted relationship between the R phase and the matrix.

Original language	English
Article number	126517
Journal	Materials Research Express
Volume	5
Issue number	12
DOIs	https://doi.org/10.1088/2053-1591/aae251
Publication status	Published - 2018 Dec
Externally published	Yes

Keywords

R phase
growth twins
microstructure
nickel-base single crystal superalloys

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Biomaterials
Surfaces, Coatings and Films
Polymers and Plastics
Metals and Alloys

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10.1088/2053-1591/aae251

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title = "Growth twins of R phase in the high Mo-containing nickel-base single crystal superalloy",

abstract = "The topological close packing phases in nickel-base single crystal superalloy aged at 1100 °C for 1000 h was investigated by the spherical aberration-corrected transmission electron microscope. There are R phases precipitated in the matrix, with the hexagonal lattice parameter as a = b = 11.154 {\AA}, c = 17.782 {\AA}. There are lamellar contrasts at the tip of the R phase, which were recognized to be {1-10-1} 01-1-1 type growth twins. The HRTEM results confirm that the formation of growth twins in R phase can release misfit stress to coordinate the distorted relationship between the R phase and the matrix.",

keywords = "R phase, growth twins, microstructure, nickel-base single crystal superalloys",

author = "Shiyu Ma and Jianxin Zhang and Pan Li and Youjian Zhang and Huixin Jin and Wenyang Zhang and Xueqiao Li and Shengcheng Mao and Jide Liu and Xinguang Wang and Yizhou Zhou and Xiaofeng Sun and Wei Ni",

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year = "2018",

month = dec,

doi = "10.1088/2053-1591/aae251",

language = "English",

volume = "5",

journal = "Materials Research Express",

issn = "2053-1591",

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TY - JOUR

T1 - Growth twins of R phase in the high Mo-containing nickel-base single crystal superalloy

AU - Ma, Shiyu

AU - Zhang, Jianxin

AU - Li, Pan

AU - Zhang, Youjian

AU - Jin, Huixin

AU - Zhang, Wenyang

AU - Li, Xueqiao

AU - Mao, Shengcheng

AU - Liu, Jide

AU - Wang, Xinguang

AU - Zhou, Yizhou

AU - Sun, Xiaofeng

AU - Ni, Wei

PY - 2018/12

Y1 - 2018/12

N2 - The topological close packing phases in nickel-base single crystal superalloy aged at 1100 °C for 1000 h was investigated by the spherical aberration-corrected transmission electron microscope. There are R phases precipitated in the matrix, with the hexagonal lattice parameter as a = b = 11.154 Å, c = 17.782 Å. There are lamellar contrasts at the tip of the R phase, which were recognized to be {1-10-1} 01-1-1 type growth twins. The HRTEM results confirm that the formation of growth twins in R phase can release misfit stress to coordinate the distorted relationship between the R phase and the matrix.

AB - The topological close packing phases in nickel-base single crystal superalloy aged at 1100 °C for 1000 h was investigated by the spherical aberration-corrected transmission electron microscope. There are R phases precipitated in the matrix, with the hexagonal lattice parameter as a = b = 11.154 Å, c = 17.782 Å. There are lamellar contrasts at the tip of the R phase, which were recognized to be {1-10-1} 01-1-1 type growth twins. The HRTEM results confirm that the formation of growth twins in R phase can release misfit stress to coordinate the distorted relationship between the R phase and the matrix.

KW - R phase

KW - growth twins

KW - microstructure

KW - nickel-base single crystal superalloys

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DO - 10.1088/2053-1591/aae251

M3 - Article

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SN - 2053-1591

VL - 5

JO - Materials Research Express

JF - Materials Research Express

IS - 12

M1 - 126517

ER -

Growth twins of R phase in the high Mo-containing nickel-base single crystal superalloy

Abstract

Keywords

ASJC Scopus subject areas

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