Microstructure evolution in a single crystal nickel-based superalloy joint by linear friction welding

Tiejun Ma; Ming Yan; Xiawei Yang; Wenya Li; Y. J. Chao

doi:10.1016/j.matdes.2015.07.046

Microstructure evolution in a single crystal nickel-based superalloy joint by linear friction welding

Tiejun Ma
, Ming Yan
, Xiawei Yang
, Wenya Li
, Y. J. Chao

School of Materials Sience and Engineering

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

33 Scopus citations

Abstract

Linear friction welding (LFW) was used with a single crystal nickel-based superalloy to produce sound welds. Microstructural examination shows that the joint has a distinct weld zone (WZ) and thermomechanically affected zone (TMAZ). In the WZ, the microstructure has recrystallized polycrystals instead of a single crystal. In the TMAZ, the amount of γ' phase increased from the TMAZ/WZ interface to the parent material (PM) and decreased from the periphery to the centre along the weld creating a U-shaped microhardness profile in the TMAZ. The microhardness is however lower than that in the WZ. The average tensile strength was found to be 837.5 ± 50. MPa, comparable to the PM (880. MPa [26]).

Original language	English
Pages (from-to)	613-617
Number of pages	5
Journal	Materials and Design
Volume	85
DOIs	https://doi.org/10.1016/j.matdes.2015.07.046
State	Published - 15 Nov 2015

Keywords

Linear friction welding
Mechanical property
Microstructure
Recrystallisation
Single crystal nickel-based superalloy

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10.1016/j.matdes.2015.07.046

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title = "Microstructure evolution in a single crystal nickel-based superalloy joint by linear friction welding",

abstract = "Linear friction welding (LFW) was used with a single crystal nickel-based superalloy to produce sound welds. Microstructural examination shows that the joint has a distinct weld zone (WZ) and thermomechanically affected zone (TMAZ). In the WZ, the microstructure has recrystallized polycrystals instead of a single crystal. In the TMAZ, the amount of γ' phase increased from the TMAZ/WZ interface to the parent material (PM) and decreased from the periphery to the centre along the weld creating a U-shaped microhardness profile in the TMAZ. The microhardness is however lower than that in the WZ. The average tensile strength was found to be 837.5 ± 50. MPa, comparable to the PM (880. MPa [26]).",

keywords = "Linear friction welding, Mechanical property, Microstructure, Recrystallisation, Single crystal nickel-based superalloy",

author = "Tiejun Ma and Ming Yan and Xiawei Yang and Wenya Li and Chao, \{Y. J.\}",

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day = "15",

doi = "10.1016/j.matdes.2015.07.046",

language = "英语",

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TY - JOUR

T1 - Microstructure evolution in a single crystal nickel-based superalloy joint by linear friction welding

AU - Ma, Tiejun

AU - Yan, Ming

AU - Yang, Xiawei

AU - Li, Wenya

AU - Chao, Y. J.

PY - 2015/11/15

Y1 - 2015/11/15

N2 - Linear friction welding (LFW) was used with a single crystal nickel-based superalloy to produce sound welds. Microstructural examination shows that the joint has a distinct weld zone (WZ) and thermomechanically affected zone (TMAZ). In the WZ, the microstructure has recrystallized polycrystals instead of a single crystal. In the TMAZ, the amount of γ' phase increased from the TMAZ/WZ interface to the parent material (PM) and decreased from the periphery to the centre along the weld creating a U-shaped microhardness profile in the TMAZ. The microhardness is however lower than that in the WZ. The average tensile strength was found to be 837.5 ± 50. MPa, comparable to the PM (880. MPa [26]).

AB - Linear friction welding (LFW) was used with a single crystal nickel-based superalloy to produce sound welds. Microstructural examination shows that the joint has a distinct weld zone (WZ) and thermomechanically affected zone (TMAZ). In the WZ, the microstructure has recrystallized polycrystals instead of a single crystal. In the TMAZ, the amount of γ' phase increased from the TMAZ/WZ interface to the parent material (PM) and decreased from the periphery to the centre along the weld creating a U-shaped microhardness profile in the TMAZ. The microhardness is however lower than that in the WZ. The average tensile strength was found to be 837.5 ± 50. MPa, comparable to the PM (880. MPa [26]).

KW - Linear friction welding

KW - Mechanical property

KW - Microstructure

KW - Recrystallisation

KW - Single crystal nickel-based superalloy

UR - https://www.scopus.com/pages/publications/84940737406

U2 - 10.1016/j.matdes.2015.07.046

DO - 10.1016/j.matdes.2015.07.046

M3 - 文章

AN - SCOPUS:84940737406

SN - 0264-1275

VL - 85

SP - 613

EP - 617

JO - Materials and Design

JF - Materials and Design

ER -

Microstructure evolution in a single crystal nickel-based superalloy joint by linear friction welding

Abstract

Keywords

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