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Deformation Behavior of a Double Soaked Medium Manganese Steel with Varied Martensite Strength

Processing Variants in Medium-Mn Steels

Advanced Steel Processing and Products Research Center, Colorado School of Mines, Golden, CO 80401, USA
Tata Steel, Wenckebachstraat 1, 1970 CA IJmuiden, The Netherlands
AK Steel, AK Steel Research and Innovation Center, 6180 Research Way, Middletown, OH 45005, USA
Author to whom correspondence should be addressed.
Metals 2019, 9(7), 771;
Received: 10 June 2019 / Revised: 1 July 2019 / Accepted: 4 July 2019 / Published: 10 July 2019
(This article belongs to the Special Issue Physical Metallurgy of High Manganese Steels)
This paper highlights some recent efforts to extend the use of medium-Mn steels for applications other than intercritically batch-annealed steels with exceptional ductility (and strengths in the range of about 1000 MPa). These steels are shown to enable a range of promising properties. In hot-stamping application concepts, elevated Mn concentration helps to stabilize austenite and to provide a range of attractive property combinations, and also reduces the processing temperatures and likely eliminates the need for press quenching. The “double soaking” concept also provides a wide range of attractive mechanical property combinations that may be applicable in cold-forming applications, and could be implemented in continuous annealing and/or continuous galvanizing processes where Zn-coating would typically represent an additional austempering step. Quenching and partitioning of steels with elevated Mn concentrations have exhibited very high strengths, with attractive tensile ductility; and medium-Mn steels have been successfully designed for quenching and partitioning using room temperature as the quench temperature, thereby effectively decoupling the quenching and partitioning steps. View Full-Text
Keywords: medium-Mn steel; hot-stamping; double soaking; continuous annealing; quenching and partitioning; high strength steel medium-Mn steel; hot-stamping; double soaking; continuous annealing; quenching and partitioning; high strength steel
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MDPI and ACS Style

Speer, J.; Rana, R.; Matlock, D.; Glover, A.; Thomas, G.; De Moor, E. Processing Variants in Medium-Mn Steels. Metals 2019, 9, 771.

AMA Style

Speer J, Rana R, Matlock D, Glover A, Thomas G, De Moor E. Processing Variants in Medium-Mn Steels. Metals. 2019; 9(7):771.

Chicago/Turabian Style

Speer, John, Radhakanta Rana, David Matlock, Alexandra Glover, Grant Thomas, and Emmanuel De Moor. 2019. "Processing Variants in Medium-Mn Steels" Metals 9, no. 7: 771.

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