Abstract
This paper presents a comprehensive metallurgical analysis conducted on representative samples obtained from two batches of 17-4PH steel rods in order to investigate the underlying factors contributing to the observed differences in their mechanical properties. The samples underwent a solution annealing process followed by an aging treatment to achieve H1025 temper condition. Surprisingly, the mechanical properties of one batch namely 91/5 were found to be inferior compared to the other batch 91/7, with only the latter meeting the specified requirements. To gain a deeper understanding of these differences, a range of analytical techniques were employed. Local variation in austenite stabilizers and its corresponding effect on microstructure of batch 91/5 was found to be the root cause of lower mechanical property.
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Acknowledgments
Authors wish to thank MCD/MMG for their support in characterization. The authors would like to express their sincere appreciation to the Deputy Director of the Materials and Mechanical Entity for their continuous encouragement and support throughout this research. Their guidance and assistance have been invaluable in the successful completion of this work. The authors are also grateful to the Director of VSSC, for granting permission to publish this work. Their endorsement and support have been instrumental in disseminating the findings of this research.
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Nayan, N., Karthikeyan, M.K., Bhatia, B.S. et al. Metallurgical Analysis of Lower Mechanical Property in 17-4PH Steel: A Comprehensive Study. J Fail. Anal. and Preven. (2024). https://doi.org/10.1007/s11668-024-01910-0
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DOI: https://doi.org/10.1007/s11668-024-01910-0