The accommodation of martensitic phase transformation strains by the ferritic matrix in dual-phase steels

Dual-phase (DP) steels are an important class of advanced high-strength steels (AHSS) and constitute a major share of steels for the automotive industry. A microstructure consisting of hard martensite embedded in a soft ferritic matrix gives them a good combination of strength and ductility. The martensite formation in the microstructure from...

Microstructural Evolution in Medium Manganese Steels during Quenching and High-Temperature Partitioning Process: A combined experimental and modelling approach

An effective way for the automotive industry to tackle the growing concern of CO2 emissions from automobiles is to reduce the overall weight of the vehicle, without compromising its performance and passenger safety. With the increasing demand of steels with enhanced properties in the last decade, the development of advanced high strength steels ...

Isothermal Phase Transformations Below the Martensite Start Temperature in a Low-Carbon Steel

Advanced High Strength Steels (AHSS) have been used extensively for the last three decades in the automotive industry as they exhibit an enhanced combination of strength and ductility which has successfully allowed the weight reduction of structural components. This breakthrough has been highly beneficial for the environment, as lighter vehicles...

Understanding bainite formation in steels

The formation of bainite in steels is one of the most intensely researched topics in the field of metallurgy. Despite the importance of bainite among the modern-day steels, even a qualitative theory to explain the bainite formation still remains a subject of controversy due to the complexity of its formation mechanism. Currently, two competing...