Abstract
On single crystals of Hadfield steel (Fe-13Mn-1.3C, Fe-13Mn-2.7Al-1.3C, wt.%) the systematical investigations of deformation mechanisms - slip and twinning, stages of plastic flow, strain hardening coefficient depending on orientation of tensile axis have been carried out by methods of optical and electron microscopy, x-ray analysis. Is has been shown that the combination of low stacking fault energy (γSF = 0.03J/m2) with high concentration of carbon atoms in aluminium-free steel results in development of the mechanical twinning at room temperature in all crystal orientations. The new type of twinning with formation of extrinsic stacking fault has been found out in [001] single crystals. Experimentally it has been established that alloying with aluminium leads to increase of stacking fault energy of Hadfield steel and suppresses twinning in all orientations of crystals at preservation of high values of strain-hardening coefficients θ.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 243-250 |
| Number of pages | 8 |
| Journal | Journal De Physique. IV : JP |
| Volume | 115 |
| DOIs | |
| State | Published - 2004 |
| Event | EUROMECH-MECAMAT'2003: 7th European Mechanics of Materials Conference on Adaptive Systems and Materials: Constitutive Materials and Hybrid Structures - Frejus, France Duration: May 18 2003 → May 23 2003 |
ASJC Scopus subject areas
- General Physics and Astronomy