The effect of Nb on the hydrogen embrittlement susceptibility of Q&P steel under static and dynamic loading

In the present study, the effect of Niobium (Nb) on the hydrogen embrittlement resistance of Quenched and Partitioning (Q&P) steel is investigated. For this purpose, the hydrogen uptake level and its impact on the mechanical properties of a Nb-free and a 0.024 wt% Nb Q&P steel are thoroughly analysed. The hydrogen trapping capacity is...

Temperature dependence of the static and dynamic behaviour in a quenching and partitioning processed low-si steel

Because of their excellent combination of strength and ductility, quenching and partitioning (Q & P) steels have a great chance of being added to the third generation of advanced high strength steels. The large ductility of Q & P steels arises from the presence of 10% to 15% of retained austenite which postpones necking due to the...

Is retained austenite controlling the mechanical properties of Q&P steels ?

Stronger and more ductile steels are increasingly demanded in important industry sectors such as automotive, gas transport ad power generation. One of the classes of Advanced High Strength Steels (AHSS) that are attracting researchers and industries are the so-called Quenching and Partitioning (Q&P) steels. The microstructure of these steels,...