An accelerated methodology for the evaluation of critical properties in polyphase alloys

Abstract

A system for more rapidly determining the strength and stiffness of polyphase alloys is presented that is based on a digital representation of the material structure. Working in concert with the representation are a number of digital tools and probes that are analogues of testing equipment and instrumentation of traditional laboratory methods. These are combined with nontraditional mechanical testing methods to complete the system. An example of an Fe-Cu system is used to illustrate the methodology.

Assessment of simplified 2D grain growth models from numerical experiments based on a level set framework

“…Digital microstructures are often generated using Voronoï cells [22] [12]. Despite its widespread use, this classical method only allows to impose the mean grain size, and not the grain size distribution.…”

Finite element model of primary recrystallization in polycrystalline aggregates using a level set framework

“…Introduction Figure 2 illustrates the procedure of creating a virtual microstructure, and the associated finite element mesh. Figure 2(a) shows a two hundred grains digital sample [3,[30][31][32], made of Voronoï cells, The Voronoï tessellation is fully described by N seeds or Voronoï sites shown in Figure 2(b). Each site i s defines a Voronoï cell or grain G i , which consists of all points closer to i s than to any other site.…”

Linking plastic deformation to recrystallization in metals using digital microstructures

“…This paper proposes a first step in the direction of multiscale modelling of recrystallization in polycrystalline metals, by considering digital microstructures [16][17][18]. Representative digital microstructures are synthesized with a specific software, based on the construction of Voronoï cells.…”