5th International High Manganese Steel Conference - HMNS 2022

Maraging steels have been widely used for the industrial application needed high strength materials such as aerospace technology and military industry. The corresponding steel is generally composed of substitutional elements such as 17-19 % Ni (in weight percent), and 8-12 % Co, 3-5 % Mo and 0.2-1.8 % Ti, and it contains a small amount of C (< 0.03 %). After hot rolling and subsequent aging,...

The objective of the present study is to develop the steels with the reasonable materials cost to replace the Fe-9Ni (wt.%) steel known as the materials for the cryogenic application. We designed the Fe-xMn-yNi-0.1C steel, and the quenching-tempering (QT) process and quenching-lamellarizing-tempering (QLT) process were applied to corresponding steel to optimize the microstructure and...

A decarbonized energy system is underway worldwide. The Paris Agreement was adopted by 196 Parties at COP 21 in Paris. Its goal is to keep global warming “below 2 °C above preindustrial levels, and to pursue effort to limit the temperature increase even further to 1.5 °C.” To achieve this long-term temperature goal, big changes are needed in the ways energy is produced, distributed and...

A novel medium Mn steel with 8 wt% Mn was developed and processed through hot rolling and intercritical annealing. The steel possessed tensile properties of 1 GPa yield strength, 1.13 GPa tensile strength and ductility of 41%. The TWIP+TRIP mechanism was found to be operative in this steel. By further cold rolling the steel after intercritical annealing, the strain hardening rate was found to...