Coarse-grained superplasticity of a Ni-Co-based superalloy

Rashad A. Al-Hammadi; Rui Zhang; Chuanyong Cui; Zijian Zhou; Yizhou Zhou

doi:10.1016/j.matlet.2023.135263

Coarse-grained superplasticity of a Ni-Co-based superalloy

Rashad A. Al-Hammadi
, Rui Zhang^*
, Chuanyong Cui
, Zijian Zhou
, Yizhou Zhou

^*Corresponding author for this work

Interdisciplinary Research Center for Advanced Materials

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

4 Scopus citations

Abstract

A near-superplastic tensile elongation of up to 232% at 1140 °C and 0.001 s⁻¹ for a coarse-grained Ni-Co-base superalloy with an average grain size of 85 µm is reported. Nevertheless, poor grain deformation coordination and low grain boundary bonding strength led to terrible thermoplasticity for the coarse-grained alloy below 1100 °C. Dynamic recrystallization (DRX) relieved the stress concentration and decreased the damage accumulation during superplasticity, improving the ductility with the increase in temperature within the γ + γ′ dual-phase regime.

Original language	English
Article number	135263
Journal	Materials Letters
Volume	353
DOIs	https://doi.org/10.1016/j.matlet.2023.135263
State	Published - 15 Dec 2023

Bibliographical note

Publisher Copyright:
© 2023 Elsevier B.V.

Keywords

Coarse grains
Metal and alloys
Microstructure
Ni-Co-based superalloy
Superplasticity

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1016/j.matlet.2023.135263

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@article{5512085344e04b84a901b23b86a7e5d3,

title = "Coarse-grained superplasticity of a Ni-Co-based superalloy",

abstract = "A near-superplastic tensile elongation of up to 232\% at 1140 °C and 0.001 s−1 for a coarse-grained Ni-Co-base superalloy with an average grain size of 85 µm is reported. Nevertheless, poor grain deformation coordination and low grain boundary bonding strength led to terrible thermoplasticity for the coarse-grained alloy below 1100 °C. Dynamic recrystallization (DRX) relieved the stress concentration and decreased the damage accumulation during superplasticity, improving the ductility with the increase in temperature within the γ + γ′ dual-phase regime.",

keywords = "Coarse grains, Metal and alloys, Microstructure, Ni-Co-based superalloy, Superplasticity",

author = "Al-Hammadi, \{Rashad A.\} and Rui Zhang and Chuanyong Cui and Zijian Zhou and Yizhou Zhou",

note = "Publisher Copyright: {\textcopyright} 2023 Elsevier B.V.",

year = "2023",

month = dec,

day = "15",

doi = "10.1016/j.matlet.2023.135263",

language = "English",

volume = "353",

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T1 - Coarse-grained superplasticity of a Ni-Co-based superalloy

AU - Al-Hammadi, Rashad A.

AU - Zhang, Rui

AU - Cui, Chuanyong

AU - Zhou, Zijian

AU - Zhou, Yizhou

PY - 2023/12/15

Y1 - 2023/12/15

N2 - A near-superplastic tensile elongation of up to 232% at 1140 °C and 0.001 s−1 for a coarse-grained Ni-Co-base superalloy with an average grain size of 85 µm is reported. Nevertheless, poor grain deformation coordination and low grain boundary bonding strength led to terrible thermoplasticity for the coarse-grained alloy below 1100 °C. Dynamic recrystallization (DRX) relieved the stress concentration and decreased the damage accumulation during superplasticity, improving the ductility with the increase in temperature within the γ + γ′ dual-phase regime.

AB - A near-superplastic tensile elongation of up to 232% at 1140 °C and 0.001 s−1 for a coarse-grained Ni-Co-base superalloy with an average grain size of 85 µm is reported. Nevertheless, poor grain deformation coordination and low grain boundary bonding strength led to terrible thermoplasticity for the coarse-grained alloy below 1100 °C. Dynamic recrystallization (DRX) relieved the stress concentration and decreased the damage accumulation during superplasticity, improving the ductility with the increase in temperature within the γ + γ′ dual-phase regime.

KW - Coarse grains

KW - Metal and alloys

KW - Microstructure

KW - Ni-Co-based superalloy

KW - Superplasticity

UR - https://www.scopus.com/pages/publications/85172934117

U2 - 10.1016/j.matlet.2023.135263

DO - 10.1016/j.matlet.2023.135263

M3 - Article

AN - SCOPUS:85172934117

SN - 0167-577X

VL - 353

JO - Materials Letters

JF - Materials Letters

M1 - 135263

ER -

Coarse-grained superplasticity of a Ni-Co-based superalloy

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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