Unlike the tempered martensitic microstructure formed in conventionally heat-treated steel, LPBF-produced steel develops a high-temperature δ-ferrite phase-based microstructure due to its ...

At cooling rates faster than 140 C/s the transition is to a metastable material known as martensite. Between 35 and 140 C/s the system at room temperature is a mixture of these two materials. The ...

including a discussion of how heat and carbon content impact a steel's microstructure. This class also describes common heat treating methods, such as annealing, quenching, normalizing, and tempering.

Sustainable lightweight design through microstructure engineering The resulting nano-structured porous martensitic alloys are lighter and stronger, thanks to precise microstructure control from ...

A UK Atomic Energy Authority (UKAEA) working group called NEURONE produced the reduced-activation ferritic-martensitic steel, or “RAFM” for short. It marks the first time that RAFM has been ...

The joining of two steel plates (pearlite) by welding is shown in the top diagram together with temperatures in the weld zone and the regions of the two plates altered by the process. The lower ...