Investigation on effects of process parameters on microstructure and mechanical properties of GH5188 direct diffusion bonding

Chunxi Yao; Wei Guo; Jingru Xin; Xinlei Ding; Peilong Fan; Xinrong Li; Jiangtao Xiong; Jinglong Li

doi:10.1016/j.matchar.2025.115630

Investigation on effects of process parameters on microstructure and mechanical properties of GH5188 direct diffusion bonding

Chunxi Yao
, Wei Guo
, Jingru Xin
, Xinlei Ding
, Peilong Fan
, Xinrong Li
, Jiangtao Xiong
, Jinglong Li

材料学院

Northwestern Polytechnical University Xian
National Key Laboratory of Precision Welding & Joiing of Materials and Structures

科研成果: 期刊稿件 › 文章 › 同行评审

5 引用（Scopus）

摘要

The process of direct diffusion bonding using GH5188 superalloy was investigated. The paper revealed that the bonding interface exhibited varying degrees of grain boundary migration as temperature increased, time extended, and pressure intensified. Furthermore, appropriate bonding pressure effectively promoted recrystallization in the joint, thereby enhancing its mechanical properties. The optimal joint was achieved at 1180 °C/60 min/15 MPa parameter, with yield tensile strength (YTS) reaching 467.7 MPa, ultimate tensile strength (UTS) reaching 998.2 MPa, elongation (EL) reaching 73.6 %, axial deformation at this parameter was measured at 2.2 %, with fracture surfaces located at base metal (BM) area, where numerous ductile dimple structures were observed.

源语言	英语
文章编号	115630
期刊	Materials Characterization
卷	229
DOI	https://doi.org/10.1016/j.matchar.2025.115630
出版状态	已出版 - 11月 2025

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10.1016/j.matchar.2025.115630

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title = "Investigation on effects of process parameters on microstructure and mechanical properties of GH5188 direct diffusion bonding",

abstract = "The process of direct diffusion bonding using GH5188 superalloy was investigated. The paper revealed that the bonding interface exhibited varying degrees of grain boundary migration as temperature increased, time extended, and pressure intensified. Furthermore, appropriate bonding pressure effectively promoted recrystallization in the joint, thereby enhancing its mechanical properties. The optimal joint was achieved at 1180 °C/60 min/15 MPa parameter, with yield tensile strength (YTS) reaching 467.7 MPa, ultimate tensile strength (UTS) reaching 998.2 MPa, elongation (EL) reaching 73.6 \%, axial deformation at this parameter was measured at 2.2 \%, with fracture surfaces located at base metal (BM) area, where numerous ductile dimple structures were observed.",

keywords = "Diffusion bonding, GH5188, Superalloys",

author = "Chunxi Yao and Wei Guo and Jingru Xin and Xinlei Ding and Peilong Fan and Xinrong Li and Jiangtao Xiong and Jinglong Li",

note = "Publisher Copyright: {\textcopyright} 2025 Elsevier Inc.",

year = "2025",

month = nov,

doi = "10.1016/j.matchar.2025.115630",

language = "英语",

volume = "229",

journal = "Materials Characterization",

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TY - JOUR

T1 - Investigation on effects of process parameters on microstructure and mechanical properties of GH5188 direct diffusion bonding

AU - Yao, Chunxi

AU - Guo, Wei

AU - Xin, Jingru

AU - Ding, Xinlei

AU - Fan, Peilong

AU - Li, Xinrong

AU - Xiong, Jiangtao

AU - Li, Jinglong

PY - 2025/11

Y1 - 2025/11

N2 - The process of direct diffusion bonding using GH5188 superalloy was investigated. The paper revealed that the bonding interface exhibited varying degrees of grain boundary migration as temperature increased, time extended, and pressure intensified. Furthermore, appropriate bonding pressure effectively promoted recrystallization in the joint, thereby enhancing its mechanical properties. The optimal joint was achieved at 1180 °C/60 min/15 MPa parameter, with yield tensile strength (YTS) reaching 467.7 MPa, ultimate tensile strength (UTS) reaching 998.2 MPa, elongation (EL) reaching 73.6 %, axial deformation at this parameter was measured at 2.2 %, with fracture surfaces located at base metal (BM) area, where numerous ductile dimple structures were observed.

AB - The process of direct diffusion bonding using GH5188 superalloy was investigated. The paper revealed that the bonding interface exhibited varying degrees of grain boundary migration as temperature increased, time extended, and pressure intensified. Furthermore, appropriate bonding pressure effectively promoted recrystallization in the joint, thereby enhancing its mechanical properties. The optimal joint was achieved at 1180 °C/60 min/15 MPa parameter, with yield tensile strength (YTS) reaching 467.7 MPa, ultimate tensile strength (UTS) reaching 998.2 MPa, elongation (EL) reaching 73.6 %, axial deformation at this parameter was measured at 2.2 %, with fracture surfaces located at base metal (BM) area, where numerous ductile dimple structures were observed.

KW - Diffusion bonding

KW - GH5188

KW - Superalloys

UR - https://www.scopus.com/pages/publications/105018103899

U2 - 10.1016/j.matchar.2025.115630

DO - 10.1016/j.matchar.2025.115630

M3 - 文章

AN - SCOPUS:105018103899

SN - 1044-5803

VL - 229

JO - Materials Characterization

JF - Materials Characterization

M1 - 115630

ER -

Investigation on effects of process parameters on microstructure and mechanical properties of GH5188 direct diffusion bonding

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