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Fracture toughness of 0.1C-Mn-Mo-Nb steel after recrystallization controlled forging.

Maguda T.M., Pytel S.M., Garcia I.C., DeArdo A.J.

Inżynieria Materiałowa

2001

R. XXII, nr 5

601-604

This paper presents a low-carbon, microalloyed, multi-phase steel, containing 0.1-Mn-Mo-Nb in terms of its processing, microstructure and related fracture toughness properties. In particular, the recrystallization controlled forging process followed by direct quenching treatment and its influence on fracture toughness is discussed with respect to cooling rate and resultant microstructure.

W pracy przedstawiono wyniki badania mikrostruktury oraz odporności na pękanie stali mikrostopowej o składzie 0.1C-Mn-Mo-Nb poddawanej regulowanej obróbce cieplno-plastycznej (kuciu) w zakresie rekrystalizacji austenitu.

Toughness of HSLA-100 copper treated steels.

Pytel S.M., Garcia C.I., DeArdo A.J.

Inżynieria Materiałowa

1998

R. XIX, nr 3

179-184

The mechanical properties of a series of HSLA-100 copper treated steels with different carbon and rare earth metals (REM) contents were evaluated. The steels used in this study were heat treated to exhibit yield strengths (YS) in the range 670 to 860 MPa. Of particular interest in this study were the effect of C and REM contents on the CTOD fracture toughness, upper shelf energy(USE) and fracture appearance transition temperature (FATT) of the steels. The results obtained clearly showed the deterioration of the impact and fracture toughness properties of the steels tested as the carbon content increased. Similar effect was observed with the total inclusion projected lengh per unit area.