TY - GEN
T1 - Effect of EAM pulsed current on 1450 MPA martensitic steel
AU - Lobdell, Megan A.
AU - Roth, John T.
AU - Nikhare, Chetan P.
AU - Parsons, Dennie
AU - Yang, Dae Ho
AU - Lee, Hyun Woo
AU - Hong, Sung Tae
N1 - Publisher Copyright:
Copyright © 2014 by ASME.
PY - 2014
Y1 - 2014
N2 - Martensitic steel is often used to fabricate parts that require high tensile strength. However, this quality, and the material's low ductility, requires manufacturing equipment with higher tonnage capacity. This paper explores a potential way to reduce the tonnage requirement by temporarily reducing the steel's required flow stress. Previous studies with other metals have shown that using a pulsed electric current will provide lower strength, as well as, an increase in ductility, without the sensitivity to temperature that heat treating has. This project investigates how martensitic steel reacts to pulsing electric current in terms of the tensile strength and elongation. The project consists of two studies. First, where the parameters considered were current density (CD), pulse duration (PD), pulse period (PP), and pressurized air (PA). Second is a series of tests where current duration was based off the material's strength. The results from the first study show that the electricity can increase the material's achievable elongation; the second study achieved reducing and limiting the material's strength.
AB - Martensitic steel is often used to fabricate parts that require high tensile strength. However, this quality, and the material's low ductility, requires manufacturing equipment with higher tonnage capacity. This paper explores a potential way to reduce the tonnage requirement by temporarily reducing the steel's required flow stress. Previous studies with other metals have shown that using a pulsed electric current will provide lower strength, as well as, an increase in ductility, without the sensitivity to temperature that heat treating has. This project investigates how martensitic steel reacts to pulsing electric current in terms of the tensile strength and elongation. The project consists of two studies. First, where the parameters considered were current density (CD), pulse duration (PD), pulse period (PP), and pressurized air (PA). Second is a series of tests where current duration was based off the material's strength. The results from the first study show that the electricity can increase the material's achievable elongation; the second study achieved reducing and limiting the material's strength.
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U2 - 10.1115/MSEC2014-4161
DO - 10.1115/MSEC2014-4161
M3 - Conference contribution
AN - SCOPUS:84908406472
T3 - ASME 2014 International Manufacturing Science and Engineering Conference, MSEC 2014 Collocated with the JSME 2014 International Conference on Materials and Processing and the 42nd North American Manufacturing Research Conference
BT - ASME 2014 International Manufacturing Science and Engineering Conference, MSEC 2014 Collocated with the JSME 2014 International Conference on Materials and Processing and the 42nd North American Manufacturing Research Conference
PB - Web Portal ASME (American Society of Mechanical Engineers)
T2 - ASME 2014 International Manufacturing Science and Engineering Conference, MSEC 2014 Collocated with the JSME 2014 International Conference on Materials and Processing and the 42nd North American Manufacturing Research Conference
Y2 - 9 June 2014 through 13 June 2014
ER -