Process Modeling of Mechanical Alloying (<I>Overview</I>)

TLDR

Recent work on mechanical alloying modeling summarizes two perspectives: local particle‑level deformation and fracture, and global device‑specific dynamics that can improve MA devices and inform local models. The study distinguishes local modeling of powder particle deformation, fracture, and welding during individual collisions from global modeling of device‑specific characteristics, employing both fundamental and phenomenological methods with numerical applications.

Abstract

Recent efforts at modeling the mechanics and dynamics of mechanical alloying are summarized. The modeling is described from two perspectives. One considers the deformation response and the fracture and welding tendencies of powder particles entrapped between colliding grinding media in an individual collision. We call this local modeling. Fundamental and phenomenological approaches to local modeling have been undertaken, and these are described here as are numerical applications of the approaches. We have termed the second type of modeling "global modeling". Global modeling concerns itself with device specific characteristics, and has potential for improving MA devices. Global modeling also serves to provide parameters that are necessary to best utilize local modeling.