𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Applied mechanics in grinding—IV. The mechanism of grinding induced phase transformation

✍ Scribed by Liangchi Zhang; Mofid Mahdi

Publisher
Elsevier Science
Year
1995
Tongue
English
Weight
688 KB
Volume
35
Category
Article
ISSN
0890-6955

No coin nor oath required. For personal study only.

✦ Synopsis

One of the most important problems in high precision grinding is the optimisation of the surface residual stress distribution of ground components. It has been realised that the heat generated in the grinding zone plays a central role in the phase transformation of workmaterials that would alter the residual stress formation. The purpose of this paper was to reveal the mechanism of phase transformation of workmateriais induced by grinding. The finite element method was used to simulate the grinding processes. The heat source generated during grinding was considered as a moving heat flux with a triangular profile. Effects of table speed, heat flux distribution, thermal properties of workmaterials and convective features of coolant were discussed in detail. It was found that an optimal combination of grinding conditions could minimise the depth of phase transformation. The results of this paper also offered essential information for the mechanism exploration of residual stresses in ground components.

📜 SIMILAR VOLUMES

Identification of the fragmentation mech
Identification of the fragmentation mechanisms in wet-phase fine grinding in a stirred bead mill
✍ Christelle Varinot; Sandrine Hiltgun; Marie-Noëlle Pons; John Dodds 📂 Article 📅 1997 🏛 Elsevier Science 🌐 English ⚖ 507 KB

Breakage and selection functions for wet-phase grinding of carbon in a stirred bead mill have been determined by a method based on Kapur's first-order approximate solution. This allows calculation of curves of Bij = F(xi/xj) which are used to characterise the fragmentation mechanisms in terms of eit

Kinetics and Mechanisms of Phase Transfo
Kinetics and Mechanisms of Phase Transformations Induced by Ball-Milling in Anatase TiO2
✍ S. Bégin-Colin; T. Girot; G. Le Caër; A. Mocellin 📂 Article 📅 2000 🏛 Elsevier Science 🌐 English ⚖ 332 KB

Ball-milling is a way of inducing phase transformations, chemical reactions, and changes in the reactivity of solids. It is a complex process for which several models have been developed to predict the evolution of systems and to describe its physics. These models sometimes empirically need experime

A combined experimental and numerical ap
A combined experimental and numerical approach to the kinetics of mechanically induced phase transformations
✍ Francesco Delogu 📂 Article 📅 2008 🏛 Elsevier Science 🌐 English ⚖ 541 KB

Numerical simulations have been used to estimate physical quantities relevant to mechanically induced transformation processes but inaccessible via experiment. Investigations focused on the mechanical response of an ensemble of polydisperse Co powder particles subjected to densification processes ap