TY - GEN
T1 - Enhanced formability of 5754 aluminum sheet metal using electric pulsing
AU - Roth, John T.
AU - Loker, Ivan
AU - Mauck, Daniel
AU - Warner, Matt
AU - Golovashchenko, Sergey F.
AU - Krause, Al
PY - 2008
Y1 - 2008
N2 - Previous studies have established that the presence of an electric current within a metal during deformation can provide the same altered mechanical properties as working the specimen at an elevated temperature, while avoiding the negative effects associated with hot working. These previous studies indicated that the electrical current could significantly improve the formability of Aluminum alloys without appreciably raising the temperature. Considering this, the research herein further investigates this potential by examining the effect of pulsed direct current on the formability of 5754 Aluminum sheet metal, an alloy of interest within the automotive industry. The results show, with the proper parameters, a pulsed electrical current, applied during continuous tensile deformation, significantly improves the maximum elongation of the Aluminum. Moreover, in contrast to hot working, pulsing the electricity during deformation did not alter the Aluminum's grain structure/size and had very little effect on the number of microvoids within the Aluminum.
AB - Previous studies have established that the presence of an electric current within a metal during deformation can provide the same altered mechanical properties as working the specimen at an elevated temperature, while avoiding the negative effects associated with hot working. These previous studies indicated that the electrical current could significantly improve the formability of Aluminum alloys without appreciably raising the temperature. Considering this, the research herein further investigates this potential by examining the effect of pulsed direct current on the formability of 5754 Aluminum sheet metal, an alloy of interest within the automotive industry. The results show, with the proper parameters, a pulsed electrical current, applied during continuous tensile deformation, significantly improves the maximum elongation of the Aluminum. Moreover, in contrast to hot working, pulsing the electricity during deformation did not alter the Aluminum's grain structure/size and had very little effect on the number of microvoids within the Aluminum.
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M3 - Conference contribution
AN - SCOPUS:52349105676
SN - 0872638618
SN - 9780872638617
T3 - Transactions of the North American Manufacturing Research Institution of SME
SP - 405
EP - 412
BT - Transactions of the North American Manufacturing Research Institution of SME - Paper Presented at NAMRC 36
T2 - Transactions of the North American Manufacturing Research Institution of SME
Y2 - 20 May 2008 through 23 May 2008
ER -