The need for lightweight materials has been an important issue in automotive industries to
reduce greenhouse gas emission and to improve fuel efficiency. In addition, automotive …

Needs for steel designs of ultra-high strength and excellent ductility have been an important
issue in worldwide automotive industries to achieve energy conservation, improvement of …

Ferrite+ austenite duplex lightweight steels have been actively developed by adding low-
density Al for overcoming a limitation of stiffness deterioration by a traditional approach to …

Increasing the yield strength of austenitic steel without significantly sacrificing ductility has
been a long-standing technical challenge. Here, we obtained an ultrahigh yield strength (∼ …

In the context of obtaining high strength-high ductility combination in transformation-induced
plasticity steels, we underscore the practical significance of controlling the stability of …

A novel type of austenite–martensite dual-phase laminate steel with a yield strength of 2.2
GPa, ultimate tensile strength of 2.5 GPa, uniform elongation of 9.4% and total elongation of …

We highlight the recent advance in strong transformation-induced plasticity (TRIP) steels,
which have higher alloying contents compared to the conventional TRIP steels for achieving …

Weight reduction from down-gauged high-strength steels has been an important issue in
automotive industries to improve fuel efficiency. In addition to lightweight needs, automotive …

This work explains the occurrence of transformation-induced plasticity via stress-assisted
martensite, when designing ultrafine-grained duplex steels. It is found that, when the …

In this paper, martensite-to-austenite reversion during intercritical annealing was applied to
a conventional low-alloy transformation-induced plasticity steel to form reverted austenite …