Strengthening<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si2.svg"><mml:mi>κ</mml:mi></mml:math>-carbide steels using residual dislocation content

Carbide Structure and Fracture Toughness of High Speed Tool Steels

In the present study, M2 high speed steels were fabricated by using electro-slag rapid remelting process. Carbide structure was analysed and the fracture toughness and hardness were also measured after austenitization treatment at 1190 and 1210C followed by tempering treatment at 535C for billets with various diameters from 16 to 60 mm. Electro-slag rapid remelting (ESRR) process is an advanced...

ε-carbide in Alloy Steels: First-principles Assessment

There is now a large volume of sophisticated steels which rely on silicon as an alloying addition with the purpose of avoiding the precipitation of cementite. But there is also evidence that the silicon can enhance the formation of ε–carbide; the mechanism of this effect is not understood and the absence of appropriate thermodynamic data makes it impossible to conduct calculations. We report he...

Modelling Simultaneous Alloy Carbide Sequence in Power Plant Steels

The Dislocation-Enhanced Finkelshtain-Rosin Effect (DEFRE) in Austenitic Steels

A systematic study of the influence of plastic deformation and low temperature ageing on the carbon Dislocation Enhanced Finkelshtain Rosin Effect (DEFREIC) in austenitic alloys of Fe-Ni, Fe-Ni-MO, Fe-Mn-A1 and Fe-Cr-Ni systems with different carbon content is reported. The experiments prove that after plastic deformation at room temperature the FR effect is transformed into DEFREIC. nith both ...

Dislocation Strengthening without Ductility Trade-off in Metastable Austenitic Steels

Strength and ductility are mutually exclusive if they are manifested as consequence of the coupling between strengthening and toughening mechanisms. One notable example is dislocation strengthening in metals, which invariably leads to reduced ductility. However, this trend is averted in metastable austenitic steels. A one-step thermal mechanical treatment (TMT), i.e. hot rolling, can effectivel...