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

IF 5.5 2区材料科学 Q1 MATERIALS SCIENCE, CHARACTERIZATION & TESTING

Materials Characterization Pub Date : 2025-10-08 DOI:10.1016/j.matchar.2025.115630

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

引用次数: 0

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.

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工艺参数对GH5188直接扩散连接组织和力学性能影响的研究

研究了GH5188高温合金直接扩散连接的工艺。结果表明，随着温度的升高、时间的延长和压力的增大，结合界面出现了不同程度的晶界迁移。适当的结合压力可以有效地促进接头的再结晶，从而提高其力学性能。在1180℃/60 min/15 MPa条件下获得最佳接头，屈服抗拉强度（YTS）达到467.7 MPa，极限抗拉强度（UTS）达到998.2 MPa，伸长率（EL）达到73.6%，轴向变形为2.2%，断口位于母材（BM）区，断口处存在大量延性韧窝组织。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Materials Characterization 工程技术-材料科学：表征与测试

CiteScore

7.60

自引率

8.50%

发文量

746

审稿时长

36 days

期刊介绍： Materials Characterization features original articles and state-of-the-art reviews on theoretical and practical aspects of the structure and behaviour of materials. The Journal focuses on all characterization techniques, including all forms of microscopy (light, electron, acoustic, etc.,) and analysis (especially microanalysis and surface analytical techniques). Developments in both this wide range of techniques and their application to the quantification of the microstructure of materials are essential facets of the Journal. The Journal provides the Materials Scientist/Engineer with up-to-date information on many types of materials with an underlying theme of explaining the behavior of materials using novel approaches. Materials covered by the journal include: Metals & Alloys Ceramics Nanomaterials Biomedical materials Optical materials Composites Natural Materials.