Abstract
The evolution of the elastic constants, , and Poisson’s ratio and acoustic birefringence of a Fe-0.5 wt% C-21.5 wt% Mn twinning-induced plasticity (TWIP) steel with reduction by cold rolling and recrystallization annealing was assessed from measurements of the times of flight of ultrasonic waves propagating along the thickness of the rolled plates. As the reduction increased, changes in the elastic constants resulted in a steadily increasing orthotropy, which was clearly shown by Poisson’s ratio and acoustic birefringence. Although optical metallography and hardness measurements showed that partial or full recrystallization is attained after annealing at 600 °C and 700 °C, the ultrasonic measurements revealed that a high level of orthotropy remains.
Highlights
Recrystallization Annealing on the Twinning-induced plasticity (TWIP) steels are currently among the most attractive materials for structural applications in the automotive industry, shipbuilding, oil and gas exploration and nonmagnetic structural applications [1,2]
To the best of our knowledge, there is no similar research involving TWIP steels, so the aim of this work was to evaluate the elastic constants of a Fe-0.5 wt% C-21.5 wt% Mn TWIP steel deformed by cold rolling and recrystallized by annealing and assess the evolution of anisotropy
This ultrasonic method could be used as a nondestructive control tool to optimize cold rolling and annealing of TWIP steels, especially for further mechanical processing, such as deep drawing, which are affected by anisotropy
Summary
Recrystallization Annealing on the Twinning-induced plasticity (TWIP) steels are currently among the most attractive materials for structural applications in the automotive industry, shipbuilding, oil and gas exploration and nonmagnetic structural applications [1,2] This is due to their high strain hardening and high levels of fracture strength, a unique combination of strength and ductility that has been the focus of research and growing scientific and technological interest in recent years [3,4,5]. To the best of our knowledge, there is no similar research involving TWIP steels, so the aim of this work was to evaluate the elastic constants of a Fe-0.5 wt% C-21.5 wt% Mn TWIP steel deformed by cold rolling and recrystallized by annealing and assess the evolution of anisotropy In this way, this ultrasonic method could be used as a nondestructive control tool to optimize cold rolling and annealing of TWIP steels, especially for further mechanical processing, such as deep drawing, which are affected by anisotropy
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
