Tensile and Fracture Behaviors of Austenitic High-Manganese Steels Subject to Different Hydrogen Embrittlement Test Methods

2019 ◽  
Author(s):  
Sang-In Lee ◽  
Ji-Min Lee ◽  
Seung-Yong Lee ◽  
Han-Jin Kim ◽  
Jin-Yoo Suh ◽  
...  
Keyword(s):  
Hydrogen Embrittlement ◽  
Test Methods ◽  
High Manganese ◽  
Fracture Behaviors ◽  
High Manganese Steels ◽  
Manganese Steels

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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