Generation of high-performance Ni-Cr-Mo-based superalloys via γ to DO22 superlattice ordered phase transformation upon addition of trace alloying elements

Liang Yuan; Rui Hu; Xiangyu Gao; Zhiqiang Li

doi:10.1016/j.msea.2018.09.093

Generation of high-performance Ni-Cr-Mo-based superalloys via γ to DO₂₂ superlattice ordered phase transformation upon addition of trace alloying elements

Liang Yuan, Rui Hu, Xiangyu Gao, Zhiqiang Li

School of Materials Sience and Engineering

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

12 Scopus citations

Abstract

The mechanical properties of Ni-Cr-Mo-based alloys with tailored ordered phases were investigated. Introduction of niobium induced the formation of a DO₂₂ superlattice and stabilized this structure by avoiding its precipitation in ternary Ni-Cr-Mo. The tetragonal structure and high thermal stability of DO₂₂ resulted in alloys with higher hardness (13 GPa) and the Young′s modulus (225 GPa). Moreover, the sample containing the DO₂₂ phase showed low creep strains and creep strain rates at holding time.

Original language	English
Pages (from-to)	38-43
Number of pages	6
Journal	Materials Science and Engineering: A
Volume	738
DOIs	https://doi.org/10.1016/j.msea.2018.09.093
State	Published - 19 Dec 2018

Keywords

Creep strain
DO superlattice
Ni-Cr-Mo-based alloys
Niobium
Thermal stability

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10.1016/j.msea.2018.09.093

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title = "Generation of high-performance Ni-Cr-Mo-based superalloys via γ to DO22 superlattice ordered phase transformation upon addition of trace alloying elements",

abstract = "The mechanical properties of Ni-Cr-Mo-based alloys with tailored ordered phases were investigated. Introduction of niobium induced the formation of a DO22 superlattice and stabilized this structure by avoiding its precipitation in ternary Ni-Cr-Mo. The tetragonal structure and high thermal stability of DO22 resulted in alloys with higher hardness (13 GPa) and the Young′s modulus (225 GPa). Moreover, the sample containing the DO22 phase showed low creep strains and creep strain rates at holding time.",

keywords = "Creep strain, DO superlattice, Ni-Cr-Mo-based alloys, Niobium, Thermal stability",

author = "Liang Yuan and Rui Hu and Xiangyu Gao and Zhiqiang Li",

note = "Publisher Copyright: {\textcopyright} 2018",

year = "2018",

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doi = "10.1016/j.msea.2018.09.093",

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T1 - Generation of high-performance Ni-Cr-Mo-based superalloys via γ to DO22 superlattice ordered phase transformation upon addition of trace alloying elements

AU - Yuan, Liang

AU - Hu, Rui

AU - Gao, Xiangyu

AU - Li, Zhiqiang

PY - 2018/12/19

Y1 - 2018/12/19

N2 - The mechanical properties of Ni-Cr-Mo-based alloys with tailored ordered phases were investigated. Introduction of niobium induced the formation of a DO22 superlattice and stabilized this structure by avoiding its precipitation in ternary Ni-Cr-Mo. The tetragonal structure and high thermal stability of DO22 resulted in alloys with higher hardness (13 GPa) and the Young′s modulus (225 GPa). Moreover, the sample containing the DO22 phase showed low creep strains and creep strain rates at holding time.

AB - The mechanical properties of Ni-Cr-Mo-based alloys with tailored ordered phases were investigated. Introduction of niobium induced the formation of a DO22 superlattice and stabilized this structure by avoiding its precipitation in ternary Ni-Cr-Mo. The tetragonal structure and high thermal stability of DO22 resulted in alloys with higher hardness (13 GPa) and the Young′s modulus (225 GPa). Moreover, the sample containing the DO22 phase showed low creep strains and creep strain rates at holding time.

KW - Creep strain

KW - DO superlattice

KW - Ni-Cr-Mo-based alloys

KW - Niobium

KW - Thermal stability

UR - http://www.scopus.com/inward/record.url?scp=85053848008&partnerID=8YFLogxK

U2 - 10.1016/j.msea.2018.09.093

DO - 10.1016/j.msea.2018.09.093

M3 - 文章

AN - SCOPUS:85053848008

SN - 0921-5093

VL - 738

SP - 38

EP - 43

JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

ER -

Generation of high-performance Ni-Cr-Mo-based superalloys via γ to DO₂₂ superlattice ordered phase transformation upon addition of trace alloying elements

Abstract

Keywords

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