Spectral TRIP enables ductile 1.1 GPa martensite

MM Wang, CC Tasan, D Ponge, D Raabe - Acta Materialia, 2016 - Elsevier
Introduction of interlath reverted austenite is an effective method to design ductile lath
martensitic steels. The challenge in this concept is that all reverted austenite films have …

Dynamic transformation mechanism for producing ultrafine grained steels

L Zhao, N Park, Y Tian, A Shibata… - Advanced Engineering …, 2018 - Wiley Online Library
Ultrafine grained (UFG) steels with grain sizes around 1 micron exhibit an excellent strength‐
ductility combination and have been extensively studied worldwide. Among the different …

On the structure-property relationship in a novel 1000 MPa hot-rolled TRIP steel with strain-assisted ferrite transformation

B Zhang, MM Zhao, Y Dong, RDK Misra, Y Du… - Materials Science and …, 2021 - Elsevier
We describe here structure-property relationship in a novel 1000 MPa hot-rolled TRIP steel
with strain-assisted ferrite processed by thermo-mechanical controlled processing (TMCP) …

Ultrafine lamellar microstructure with greatly enhanced strength and ductility of martensite steel via heavily warm rolling of metastable austenite

X Ji, L Fu, H Zheng, J Peng, W Wang, A Shan - Materials Science and …, 2021 - Elsevier
Ultrafine lamellar-structured (UFLS) martensite microstructure was fabricated by heavily
warm rolling (HWR) of a metastable austenite steel with 93% deformation reduction and …

Prediction of post-dynamic austenite-to-ferrite transformation and reverse transformation in a low-carbon steel by cellular automaton modeling

C Zheng, D Raabe, D Li - Acta Materialia, 2012 - Elsevier
The post-dynamic transformation that takes place during the subsequent isothermal holding
for the case when dynamic strain-induced transformation (DSIT) from austenite to ferrite …

Combination of dynamic transformation and dynamic recrystallization for realizing ultrafine-grained steels with superior mechanical properties

L Zhao, N Park, Y Tian, A Shibata, N Tsuji - Scientific Reports, 2016 - nature.com
Dynamic recrystallization (DRX) is an important grain refinement mechanism to fabricate
steels with high strength and high ductility (toughness). The conventional DRX mechanism …

Effect of strain path on dynamic strain-induced transformation in a microalloyed steel

L Sun, K Muszka, BP Wynne, EJ Palmiere - Acta Materialia, 2014 - Elsevier
Dynamic strain-induced transformation (DSIT) in a low-carbon microalloyed steel was
studied by hot cyclic torsion to understand the interactions between DSIT and strain path …

Effect of heavy warm rolling on microstructures and mechanical properties of AISI 4140 steel

L Lv, L Fu, S Ahmad, A Shan - Materials Science and Engineering: A, 2017 - Elsevier
In this study, ultrafine structured AISI 4140 steels with ultrahigh strength, sufficient ductility
and low yield ratio were obtained through warm rolling and subsequent quenching without …

A novel thermomechanical approach to produce a fine ferrite and low-temperature bainitic composite microstructure

H Beladi, IB Timokhina, XY Xiong, PD Hodgson - Acta materialia, 2013 - Elsevier
A novel thermomechanical processing was developed in the present study to produce a
unique microstructure consisting of fine ferrite grains (ie∼ 4 μm on average) and low …

The mechanical properties of low alloy TRIP-aided steel: the role of retained austenite

R Ranjan, H Beladi, PD Hodgson, SB Singh - Metallurgical and Materials …, 2021 - Springer
Thermo-mechanical treatments were performed to exploit the recrystallisation and
deformation induced ferrite transformation (DIFT) during processing and study their effect on …