A. Aghajani

TL;DR: In this article, the evolution of the microstructure of a 12% Cr tempered martensite ferritic steel under conditions of long-term aging and creep (823 K, 120 MPa, t R ǫ =139, 971 H) was investigated, showing how subgrains coarsen, that the close correlation between carbides and subgrain boundaries loosens during longterm creep and that the frequency of smallangle boundaries increases.

TL;DR: Aghajani et al. as discussed by the authors showed that Laves phase particles do not reach thermodynamic equilibrium as they form and grow during long-term creep (120 MPa, 823 K, 139 971 h) of a 12% chromium tempered martensite ferritic steel.

TL;DR: In this article, the evolution of dislocation densities in tempered martensite ferritic steels during long-term aging and creep was studied using transmission electron microscopy in combination with a high-angle annular dark-field detector.

TL;DR: In this article, the shape memory alloy Ti 39 Ni 45 Cu 16, which exhibits a single B2 −→ −R-phase transformation above 25°C with a thermal hysteresis width 2 precipitates within the TiNi(Cu) matrix, which are concluded to be responsible for the R-phase formation and separation of the transformation steps.

TL;DR: In this paper, a crept modified 2(1/4)Cr-Mo steel (T24) was investigated in order to understand differences in creep behavior which are related to different cooling rates after austenitizing (air-cooling and water quenching).