Mechanistic Origin of Orientation-Dependent Substructure Evolution in Aluminum and Aluminum-Magnesium Alloys

Prakash, Aditya; Tak, Tawqeer Nasir; Anand, Abu; Pai, Namit; Murty, S. V. S. Narayana; Singh, Chandra Veer; Guruprasad, P. J.; Samajdar, Indradev

doi:10.1007/s11661-022-06698-y

Cited by 8 publications

(1 citation statement)

References 87 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This bypasses the problem of predicting the deformed state, allowing for a focus on the evolution of the subgrain distribution during annealing which, for example, in a number of aluminum alloys, leads to the recrystallized microstructure. It has been found that the dislocation substructure may depend on the grain orientation [6][7][8][9][10]. As reported in these studies, the average size and disorientation of subgrains are different within each texture component and grain orientation, and they depend on the deformation conditions.…”

Section: Introductionmentioning

confidence: 59%

Large-Scale Multi-Phase-Field Simulation of 2D Subgrain Growth

Khajezade,

Poole,

Greenwood

et al. 2024

Metals

View full text Add to dashboard Cite

The characteristics of subgrains in a deformed state after the high-temperature deformation of aluminum alloys control the subsequent recrystallization process and corresponding mechanical properties. In this study, systematic 2D phase-field simulations have been conducted to determine the role of deformed state parameters such as subgrain size and disorientation distributions on subgrain growth in an individual grain representing a single crystallographic orientation. The initial subgrain size and disorientation distributions have been varied by ±50%. To have a statistically relevant number of subgrains, large-scale simulations have been conducted using an in-house-developed phase-field code that takes advantage of distributed computing. The results of these simulations indicate that the growth of subgrains reaches a self-similar regime regardless of the initial subgrain structure. A narrower initial subgrain size distribution leads to faster growth rates, but it is the initial disorientation distribution that has a larger impact on the growth of subgrains. The results are discussed in terms of the evolution of the average diameter of subgrains and the average disorientation in the microstructure.

show abstract