scholarly journals Ab Initio-Based Modelling of the Yield Strength in High-Manganese Steels

Metals ◽  
2018 ◽  
Vol 8 (1) ◽  
pp. 34 ◽  
Author(s):  
Simon Sevsek ◽  
Wolfgang Bleck
Keyword(s):  
Yield Strength ◽  
Ab Initio ◽  
High Manganese ◽  
High Manganese Steels ◽  
Manganese Steels

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.

Austenite Grain Growth in High Manganese Steels

2019 ◽  
Vol 50 (12) ◽  
pp. 5760-5766 ◽  
Author(s):  
Madhumanti Bhattacharyya ◽  
Yves Brechet ◽  
Gary R. Purdy ◽  
Hatem S. Zurob
Keyword(s):  
Grain Growth ◽  
High Manganese ◽  
Austenite Grain ◽  
High Manganese Steels ◽  
Austenite Grain Growth ◽  
Manganese Steels

scholarly journals Mechanical Properties and Microstructural Aspects of Two High-Manganese Steels with TWIP/TRIP Effects: A Comparative Study

Metals ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 24
Author(s):  
Matías Bordone ◽  
Juan Perez-Ipiña ◽  
Raúl Bolmaro ◽  
Alfredo Artigas ◽  
Alberto Monsalve
Keyword(s):  
Mechanical Response ◽  
Volume Fraction ◽  
Tensile Tests ◽  
Optical Microscope ◽  
Chemical Compositions ◽  
High Manganese ◽  
Microstructural Changes ◽  
Ε Martensite ◽  
High Manganese Steels ◽  
Manganese Steels

This article is focused on the mechanical behavior and its relationship with the microstructural changes observed in two high-manganese steels presenting twinning-induced plasticity (TWIP) and transformation-induced plasticity (TRIP), namely Steel B and Steel C, respectively. Chemical compositions were similar in manganese, but carbon content of Steel B approximately doubles Steel C, which directly impacted on the stacking fault energy (SFE), microstructure and mechanical response of each alloy. Characterization of as-cast condition by optical microscope revealed a fully austenitic microstructure in Steel B and a mixed microstructure in Steel C consisting of austenite grains and thermal-induced (εt) martensite platelets. Same phases were observed after the thermo-mechanical treatment and tensile tests, corroborated by means of X-Ray Diffraction (XRD), which confirms no phase transformation in Steel B and TRIP effect in Steel C, due to the strain-induced γFCC→εHCP transformation that results in an increase in the ε-martensite volume fraction. Higher values of ultimate tensile strength, yield stress, ductility and impact toughness were obtained for Steel B. Significant microstructural changes were revealed in tensile specimens as a consequence of the operating hardening mechanisms. Scanning Electron Microscopy (SEM) observations on the tensile and impact test specimens showed differences in fracture micro-mechanisms.

A new constitution diagram for dissimilar metal welds of high-manganese steels

2018 ◽  
Vol 63 (2) ◽  
pp. 491-499
Author(s):  
Benjamin Wittig ◽  
Manuela Zinke ◽  
Sven Jüttner ◽  
Daniel Keil
Keyword(s):  
Constitution Diagram ◽  
High Manganese ◽  
Dissimilar Metal ◽  
High Manganese Steels ◽  
Manganese Steels
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