Dynamic Tensile Response of a Fe–49Co–2V Alloy at Various Strain Rates and Temperatures

Song, B.; Sanborn, B.; Susan, D.; Johnson, K.; Dabling, J.; Carroll, J.; Brink, A.; Grutzik, S.; Kustas, A. B.

doi:10.1007/s40870-020-00240-0

Dynamic Tensile Response of a Fe–49Co–2V Alloy at Various Strain Rates and Temperatures

Journal Article · Fri Mar 20 00:00:00 EDT 2020 · Journal of Dynamic Behavior of Materials

DOI:https://doi.org/10.1007/s40870-020-00240-0· OSTI ID:1619210

Song, B. ^[1]; Sanborn, B. ^[1]; Susan, D. ^[1]; Johnson, K. ^[1]; Dabling, J. ^[1]; Carroll, J. ^[1]; Brink, A. ^[1]; Grutzik, S. ^[1]; Kustas, A. B. ^[1]

Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Soft ferromagnetic alloys are often utilized in electromagnetic applications due to their desirable magnetic properties. In support of these applications, the ferromagnetic alloys are also required to bear mechanical load under various loading and environmental conditions. In this study, a Fe–49Co–2V alloy was dynamically characterized in tension with a Kolsky tension bar and a Drop–Hopkinson bar at various strain rates and temperatures. Dynamic tensile stress–strain curves of the Fe–49Co–2V alloy were obtained at strain rates ranging from 40 to 230 s^-1 and temperatures from - 100 to 100 °C. All dynamic tensile stress–strain curves exhibited an initial linear elastic response to an upper yield followed by Lüders band response and then a nearly linear work-hardening behavior. The yield strength of this material was found to be sensitive to both strain rate and temperature, whereas the hardening rate was independent of strain rate or temperature. The Fe–49Co–2V alloy exhibited a feature of brittle fracture in tension under dynamic loading with no necking being observed.

View Accepted Manuscript (DOE)

Research Organization:: Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: AC04-94AL85000

OSTI ID:: 1619210

Report Number(s):: SAND--2019-7657J; 677098

Journal Information:: Journal of Dynamic Behavior of Materials, Journal Name: Journal of Dynamic Behavior of Materials Journal Issue: 2 Vol. 6; ISSN 2199-7446

Publisher:: SpringerCopyright Statement

Country of Publication:: United States

Language:: English

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