Grain control in mechanically alloyed oxide dispersion strengthened MA 957 steel

Damage evolution during creep of steels

“…9a). Yet, while the 316L samples were produced with equiaxed grains, the thermo-mechanical processing operations employed to manufacture the oxide-dispersion-strengthened MA957 result in an elongated grain structure [7,14]. Under tensile stresses applied parallel to the long-grain axes, microcracks then nucleate on the short transverse boundaries and grow through the adjacent grains to cause failure in a transgranular manner (Fig.…”

Role of strain heterogeneity on recrystallisation of oxide dispersion strengthened Fe–Cr–Al alloys for high-temperature applications

“…The microstructure, however, following mechanical alloying and consolidation of the resulting powder (for example, by extrusion), consists of fine grains which have a width which is much less than a micrometre and which are cold-deformed during the consolidation process [15][16][17][18]. The material in this state is hard and contains an enormous amount of stored energy [19,20]. However, recent studies [21,22] concluded that the microstructure in the as-extruded and hot rolled condition of PM 2000 consists of fine (*0.5 lm) grains of ferrite ( Fig.…”

Hydration Analysis of Fine Particle and Old Mortar Attached on the Surface of Recycled Aggregate

“…Therefore, DSC, which can measure changes in thermal energy according to temperature change, is widely used in studying high molecular substances, and offers the advantage of allowing researchers to obtain accurate analysis results quickly. More detailed information can be found in the studies done by Murakami et al [9] and Chou and Bhadeshia [10].…”