Twin-roll strip casting: A competitive alternative for the production of high-manganese steels with advanced mechanical properties

2015 ◽  
Vol 627 ◽  
pp. 72-81 ◽  
Author(s):  
Markus Daamen ◽  
Christian Haase ◽  
Jens Dierdorf ◽  
Dmitri A. Molodov ◽  
Gerhard Hirt
Keyword(s):  
Mechanical Properties ◽  
Strip Casting ◽  
High Manganese ◽  
High Manganese Steels ◽  
Twin Roll ◽  
Manganese Steels

scholarly journals From High-Manganese Steels to Advanced High-Entropy Alloys

Metals ◽  
2019 ◽  
Vol 9 (7) ◽  
pp. 726 ◽  
Author(s):  
Christian Haase ◽  
Luis Antonio Barrales-Mora
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Structural Material ◽  
High Entropy Alloys ◽  
High Manganese ◽  
High Entropy ◽  
Design Concepts ◽  
Physical Mechanisms ◽  
High Manganese Steels ◽  
Manganese Steels

Arguably, steels are the most important structural material, even to this day. Numerous design concepts have been developed to create and/or tailor new steels suited to the most varied applications. High-manganese steels (HMnS) stand out for their excellent mechanical properties and their capacity to make use of a variety of physical mechanisms to tailor their microstructure, and thus their properties. With this in mind, in this contribution, we explore the possibility of extending the alloy design concepts that haven been used successfully in HMnS to the recently introduced high-entropy alloys (HEA). To this aim, one HMnS steel and the classical HEA Cantor alloy were subjected to cold rolling and heat treatment. The evolution of the microstructure and texture during the processing of the alloys and the resulting properties were characterized and studied. Based on these results, the physical mechanisms active in the investigated HMnS and HEA were identified and discussed. The results evidenced a substantial transferability of the design concepts and more importantly, they hint at a larger potential for microstructure and property tailoring in the HEA.

scholarly journals The Influence of Warm Rolling on Microstructure and Deformation Behavior of High Manganese Steels

Metals ◽  
2019 ◽  
Vol 9 (7) ◽  
pp. 797 ◽  
Author(s):  
Haupt ◽  
Müller ◽  
Haase ◽  
Sevsek ◽  
Brasche ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Yield Strength ◽  
Warm Rolling ◽  
Deformation Mechanisms ◽  
Thickness Reduction ◽  
High Manganese ◽  
Active Deformation ◽  
High Manganese Steels ◽  
Rolling Deformation ◽  
Manganese Steels

In this work, a Fe23Mn0.3C1Al high manganese twinning-induced plasticity (TWIP) steel is subjected to varying warm rolling procedures in order to increase the yield strength and maintain a notable ductility. A comprehensive material characterization allows for the understanding of the activated deformation mechanisms and their impact on the resulting microstructure, texture, and mechanical properties. The results show a significant enhancement of the yield strength compared to a fully recrystallized Fe23Mn0.3C1Al steel. This behavior is mainly dominated by the change of the active deformation mechanisms during rolling. Deformation twinning is very pronounced at lower temperatures, whereas this mechanism is suppressed at 500 °C and a thickness reduction of up to 50%. The mechanical properties can be tailored by adjusting rolling temperature and thickness reduction to desired applications.

Effect of Rare Earth Cerium Addition on Microstructures and Mechanical Properties of Low Carbon High Manganese Steels

2017 ◽  
Vol 36 (2) ◽  
pp. 145-153 ◽  
Author(s):  
M. Z. Jiang ◽  
Y. C. Yu ◽  
H. Li ◽  
X. Ren ◽  
S. B. Wang
Keyword(s):  
Mechanical Properties ◽  
Induction Furnace ◽  
Lattice Misfit ◽  
Vacuum Induction Furnace ◽  
Low Carbon ◽  
High Manganese ◽  
Calculation Results ◽  
High Manganese Steels ◽  
Microstructures And Mechanical Properties ◽  
Manganese Steels

AbstractLow carbon high manganese steels with different Ce contents were melted in medium frequency vacuum induction furnace. The microstructures and mechanical properties of steels were studied by OM, SEM, EDS and mechanical property testing. The results showed that the microstructures of experimental steels were refined remarkably, inclusions distributed more finely and uniformly, the tensile strength and impact toughness of tested steels both improved greatly after the addition of Ce. Thermodynamic calculation results demonstrated that Ce contained inclusions were Ce2O3 and Ce3S4, which agreed well with the results observed by SEM and EDS. By analysis of two-dimensional lattice disregistry, it was shown that the lattice misfit parameter between δ-Fe and Ce2O3, Ce3S4 are less than 6 %, which indicated that Ce2O3 and Ce3S4 could effectively act as the heterogeneous nuclei of initial δ-Fe. Therefore, the microstructures were refined significantly and the mechanical properties were improved correspondingly in Ce-added low carbon high manganese steels.

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