Abstract
Maraging steel is a hard, tough steel. These properties make it desirable in mechanically demanding applications. However, it is also expensive and difficult to work. Additive manufacture is therefore attractive: it reduces both the amount of material required, and the amount of machining required, to construct a given object. Additively manufactured maraging steel is commercially available, but the selective laser melting technique used to produce it may affect the material’s mechanical properties.
The tensile Hopkinson bar is a useful system for applying a well-defined tensile loading pulse at a strain rate of order 1000 per second. Calibration and data analysis for the system are not straightforward, however.
This work presents the design, calibration and analysis used to recover stress and strain data for maraging steel loaded to failure using a tensile Hopkinson bar. Conventional wrought maraging steel, additively manufactured maraging steel and other materials were studied.
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Notes
- 1.
6% aluminum, 4% vanadium, balance titanium
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Acknowledgement
This research was funded by QinetiQ. Peter Gould, Phil Church and Michael Lytwyn of QinetiQ are thanked for several helpful discussions.
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Taylor, N.E., Williamson, D.M., Braithwaite, C.H., Ward, S.J. (2020). Tensile Hopkinson Bar Analysis of Additively Manufactured Maraging Steel. In: Lamberson, L. (eds) Dynamic Behavior of Materials, Volume 1. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, Cham. https://doi.org/10.1007/978-3-030-30021-0_19
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DOI: https://doi.org/10.1007/978-3-030-30021-0_19
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