Shock Hugoniot of Forged and Additively Manufactured 304L Stainless Steel

The purpose of this research was to measure the equation of state for additively manufactured (AM) and forged 304L stainless steel using a novel experimental technique. An understanding of the dynamic behavior of AM metals is integral to their timely adoption into various applications. The Hugoniot...

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Bibliographic Details
Published in:Metals (Basel ) 2022-10, Vol.12 (10), p.1661
Main Authors: Thomas, Sarah A., Hawkins, Michelle C., Hixson, Robert S., Martinez, Ramon M., Gray, George T., Luscher, Darby J., Fensin, Saryu J.
Format: Article
Language:English
Subjects:
Additive manufacturing
Austenitic stainless steels
Comparative analysis
dynamic loading
Elastic waves
equation of state
Equations of state
Experiments
Laser fusion
Lasers
MATERIALS SCIENCE
Mechanical properties
Morphology
Stainless steel
stainless steel 304L
Steel, Stainless
Wave propagation
Wave velocity
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Summary:The purpose of this research was to measure the equation of state for additively manufactured (AM) and forged 304L stainless steel using a novel experimental technique. An understanding of the dynamic behavior of AM metals is integral to their timely adoption into various applications. The Hugoniot of the AM 304L was compared to that of the forged 304L at particle velocities where the material retains a two-wave structure. This comparison enabled us to determine the sensitivity of the equation of state to microstructure as varied due to processing. Our results showed that there was a measurable difference in the measured shock velocity between the AM and forged 304L. The shock wave velocities for the AM 304L were found to be ~3% slower than those for the forged 304L at similar particle velocities. To understand these differences, properties such as densities, sound speeds, and texture were measured and compared between the forged and AM materials. Our results showed that no measurable difference was found in these properties. Additionally, it is possible that differing elastic wave amplitudes may influence shock velocity
ISSN:2075-4701
2075-4701
DOI:10.3390/met12101661