Abstract
This work describes a correlation among texture, in-plane anisotropy in tensile properties, and yield locus in Ni-based Hastelloy C-276 alloy. The alloy exhibits moderate values of in-plane anisotropy and anisotropy index, which has been attributed to the presence of moderate overall intensity of texture. The alloy displays two slopes in true plastic stress–strain curve and follows a Ludwigson relation. At low plastic strains, the sample displays the presence of annealing twins and less strain localization at grain boundaries, while the formation of deformation twins and high strain localization within the deformation twins and at the grain boundaries are observed in a high-strained region. The 45-deg and 67.5-deg orientation samples show relatively low ductility and low work-hardening exponent. This has been explained based on dislocation storage capacity and dynamic recovery coefficient using Kock–Mecking–Estrin analysis.
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Acknowledgments
The authors are grateful to Ministry of Defence, Government of India for financial support and Director, DMRL, Hyderabad for constant encouragement. We extend our thanks to Dr. T.K. Nandy and Shri S. Chawla for many fruitful discussions.
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Manuscript submitted September 5, 2013.
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Mehta, K.K., Mukhopadhyay, P., Mandal, R.K. et al. Mechanical Properties Anisotropy of Cold-Rolled and Solution-Annealed Ni-Based Hastelloy C-276 Alloy. Metall Mater Trans A 45, 3493–3504 (2014). https://doi.org/10.1007/s11661-014-2294-1
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DOI: https://doi.org/10.1007/s11661-014-2294-1