Shock Hugoniot of forged and additively manufactured 304L stainless steel

Journal Article · Thu Apr 01 04:00:00 EDT 2021 · Acta Materialia

OSTI ID:1772552

Thomas, Sarah A ^[1]; Hawkins, Michelle Cameron ^[2]

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1. Mission Support and Test Services, LLC (MSTS), Los Alamos, NM (United States)
2. Mission Support and Test Services, LLC (MSTS), North Las Vegas, NV (United States)

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 have an effect on shock velocity.

• Research Organization: Nevada National Security Site/Mission Support and Test Services LLC, Las Vegas, NV (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA), Office of Defense Programs (DP)
• DOE Contract Number: NA0003624
• OSTI ID: 1772552
• Report Number(s): “DOE/NV/03624--1049; STIP WF - 23503481
• Journal Information: Acta Materialia, Journal Name: Acta Materialia
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
EOS
additive manufacturing
metallic materials
stainless steel