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Analysis of Hot Tensile Fracture and Flow Behaviors of Inconel 625 Superalloy

Authors :
Xin-Zhe Pan
Xiao-Min Chen
Meng-Tao Ning
Source :
Materials, Vol 17, Iss 2, p 473 (2024)
Publication Year :
2024
Publisher :
MDPI AG, 2024.

Abstract

In this work, Inconel 625 alloy is explored regarding high-temperature tensile deformation and fracture behaviors at a strain rate of 0.005ā€“0.01 sāˆ’1 under a deformation temperature ranging from 700ā€“800 °C. The subsequent analysis focuses on the impact of deformation parameters on flow and fracture characteristics. The fractured surface reveals that ductile fracture is dominated by the nucleation, growth, and coalescence of microvoids as the primary failure mechanisms. The elevated deformation temperature and reduced strain rate stimulate the level of dynamically recrystallized (DRX) structures, resulting in intergranular fractures. The Arrhenius model and the particle swarm optimization-artificial neural network (PSO-ANN) model are developed to predict the hot tensile behavior of the superalloy. It indicates that the PSO-ANN model exhibits a correlation coefficient (R) as high as 0.9967, surpassing the corresponding coefficient of 0.9344 for the Arrhenius model. Furthermore, the relative absolute error of 9.13% (Arrhenius) and 1.85% (PSO-ANN model) are recorded. The developed PSO-ANN model accurately characterizes the flow features of the Inconel 625 superalloy with high precision and reliability.

Details

Language :
English
ISSN :
19961944
Volume :
17
Issue :
2
Database :
Directory of Open Access Journals
Journal :
Materials
Publication Type :
Academic Journal
Accession number :
edsdoj.bdb6e4b0819441c386d869c2b05b0c2c
Document Type :
article
Full Text :
https://doi.org/10.3390/ma17020473