Composition design of nickel-base superalloys based on cluster structural model

Jing Jing Yu; Qing Wang; Xiao Na Li; Yao Shi; Chuang Dong; Chun Jun Ji; Xiang Ming Xu

Composition design of nickel-base superalloys based on cluster structural model

Jing Jing Yu, Qing Wang, Xiao Na Li, Yao Shi, Chuang Dong, Chun Jun Ji, Xiang Ming Xu

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

4 Scopus citations

Abstract

Composition of Ni-base superalloys was investigated using a cluster-plus-glue-atom model, then a basic Ni-Cr binary cluster lormula [Cr-Ni₁₂] Cr₃ was proposed where [Cr-Ni₁₂] cluster was a Cr-centered cuboctahedron surrounded by 12 Ni atoms in FCC lattice and three Cr atoms represented glue atoms. By alloying the basic cluster formula, Ni-base alloy series with a general cluster model [(Al/Ti/Nb)-(Ni/Fe/Co)₁₂] (Cr/Al)₃ were designed. φ10 mm alloy rods were prepared and heat-treated at 1373 K for 2 h. Experimental results show that the alloys with one Al atom in cluster formula have extremely line γ' particles precipitated in the γ matrix which has a weak strengthening effect. In contrast, a lot of larger γ' particles with a size range of 30 ~ 60 nm precipitated in the [Al-(Ni₁₀ Fe₂)] (Cr₂Al) alloy with two Al atoms, thus the hardnesses ol the alloys are improved. That Al, Ti and Nb occupied the cluster center in equal proportion makes the [(Al_1/3 Ti_1/3 Nb_1/3)-(Ni₁₀ Fe₂)] Cr₃ alloy have the highest hardness, being 2.86 GPa.

Original language	English
Pages (from-to)	184-188
Number of pages	5
Journal	Cailiao Rechuli Xuebao/Transactions of Materials and Heat Treatment
Volume	34
Issue number	8
State	Published - Aug 2013
Externally published	Yes

Keywords

γ' precipitation
Cluster-plus-glue-atom model
Ni-base superalloys

Cite this

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title = "Composition design of nickel-base superalloys based on cluster structural model",

abstract = "Composition of Ni-base superalloys was investigated using a cluster-plus-glue-atom model, then a basic Ni-Cr binary cluster lormula [Cr-Ni12] Cr3 was proposed where [Cr-Ni12] cluster was a Cr-centered cuboctahedron surrounded by 12 Ni atoms in FCC lattice and three Cr atoms represented glue atoms. By alloying the basic cluster formula, Ni-base alloy series with a general cluster model [(Al/Ti/Nb)-(Ni/Fe/Co)12] (Cr/Al)3 were designed. φ10 mm alloy rods were prepared and heat-treated at 1373 K for 2 h. Experimental results show that the alloys with one Al atom in cluster formula have extremely line γ' particles precipitated in the γ matrix which has a weak strengthening effect. In contrast, a lot of larger γ' particles with a size range of 30 ~ 60 nm precipitated in the [Al-(Ni10 Fe2)] (Cr2Al) alloy with two Al atoms, thus the hardnesses ol the alloys are improved. That Al, Ti and Nb occupied the cluster center in equal proportion makes the [(Al1/3 Ti1/3 Nb1/3)-(Ni10 Fe2)] Cr3 alloy have the highest hardness, being 2.86 GPa.",

keywords = "γ' precipitation, Cluster-plus-glue-atom model, Ni-base superalloys",

author = "Yu, {Jing Jing} and Qing Wang and Li, {Xiao Na} and Yao Shi and Chuang Dong and Ji, {Chun Jun} and Xu, {Xiang Ming}",

year = "2013",

month = aug,

language = "英语",

volume = "34",

pages = "184--188",

journal = "Cailiao Rechuli Xuebao/Transactions of Materials and Heat Treatment",

issn = "1009-6264",

publisher = "Chinese Mechanical Engineering Society",

number = "8",

}

TY - JOUR

T1 - Composition design of nickel-base superalloys based on cluster structural model

AU - Yu, Jing Jing

AU - Wang, Qing

AU - Li, Xiao Na

AU - Shi, Yao

AU - Dong, Chuang

AU - Ji, Chun Jun

AU - Xu, Xiang Ming

PY - 2013/8

Y1 - 2013/8

N2 - Composition of Ni-base superalloys was investigated using a cluster-plus-glue-atom model, then a basic Ni-Cr binary cluster lormula [Cr-Ni12] Cr3 was proposed where [Cr-Ni12] cluster was a Cr-centered cuboctahedron surrounded by 12 Ni atoms in FCC lattice and three Cr atoms represented glue atoms. By alloying the basic cluster formula, Ni-base alloy series with a general cluster model [(Al/Ti/Nb)-(Ni/Fe/Co)12] (Cr/Al)3 were designed. φ10 mm alloy rods were prepared and heat-treated at 1373 K for 2 h. Experimental results show that the alloys with one Al atom in cluster formula have extremely line γ' particles precipitated in the γ matrix which has a weak strengthening effect. In contrast, a lot of larger γ' particles with a size range of 30 ~ 60 nm precipitated in the [Al-(Ni10 Fe2)] (Cr2Al) alloy with two Al atoms, thus the hardnesses ol the alloys are improved. That Al, Ti and Nb occupied the cluster center in equal proportion makes the [(Al1/3 Ti1/3 Nb1/3)-(Ni10 Fe2)] Cr3 alloy have the highest hardness, being 2.86 GPa.

AB - Composition of Ni-base superalloys was investigated using a cluster-plus-glue-atom model, then a basic Ni-Cr binary cluster lormula [Cr-Ni12] Cr3 was proposed where [Cr-Ni12] cluster was a Cr-centered cuboctahedron surrounded by 12 Ni atoms in FCC lattice and three Cr atoms represented glue atoms. By alloying the basic cluster formula, Ni-base alloy series with a general cluster model [(Al/Ti/Nb)-(Ni/Fe/Co)12] (Cr/Al)3 were designed. φ10 mm alloy rods were prepared and heat-treated at 1373 K for 2 h. Experimental results show that the alloys with one Al atom in cluster formula have extremely line γ' particles precipitated in the γ matrix which has a weak strengthening effect. In contrast, a lot of larger γ' particles with a size range of 30 ~ 60 nm precipitated in the [Al-(Ni10 Fe2)] (Cr2Al) alloy with two Al atoms, thus the hardnesses ol the alloys are improved. That Al, Ti and Nb occupied the cluster center in equal proportion makes the [(Al1/3 Ti1/3 Nb1/3)-(Ni10 Fe2)] Cr3 alloy have the highest hardness, being 2.86 GPa.

KW - γ' precipitation

KW - Cluster-plus-glue-atom model

KW - Ni-base superalloys

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M3 - 文章

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SN - 1009-6264

VL - 34

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JO - Cailiao Rechuli Xuebao/Transactions of Materials and Heat Treatment

JF - Cailiao Rechuli Xuebao/Transactions of Materials and Heat Treatment

IS - 8

ER -

Composition design of nickel-base superalloys based on cluster structural model

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