β Scribed by O. Hunderi; N. Ryum
No coin nor oath required. For personal study only.
The effect of Zener drag on the grain growth process has been studied within the framework of the Wagner-Zlyosov-Hillert model. We find. as expected, that stagnation takes place, and we have studied how the limiting radius varies with Zener drag. We also demonstrate that previous models for the kinetics of the stagnation are unable to give a satisfactory description of the kinetics. We calculate the shape of the distribution function at st~g~tion and discuss how this is affected by the shape of the initial distribution furiction. R&urn&--Nous avons etudit I'effet du trainage de Zener sur la croissance des grains dans Ie cadre du mod&le de Wagner, Zlyosov et Hillert. Comme nous attendions, nous avons trouve qu'il se produisait une stagnation et nous avons ttudiC la variation du rayon limite en fonction du trainage de Zener. Nous dCmontrons Cgalement que les modbles antCrieurs des cinetiques de stagnation ne peuvent pas donner une description satisfaisante des cidtiques. Nous calculons la forme de la fonction de r&partition B la stagnation et nous discutons de la man&e dont elle est affect&e par la forme de la fonction de rkpartition initiale.
π SIMILAR VOLUMES
Using the Hellman and Hillert model for the shape of a deformed boundary, the Zener drag originated by a spherical particle is analyzed. An expression for the pinning stress is obtained and it is compared with the original finding of Zener and with some recent results from the literature. Rbnm&-Nous
## Abstract This work is part of a general effort to demonstrate the effect of the bulk microstructure of titanium as a model bone implant material on viability of osteoblasts (boneβforming cells). The objective of this work was to study the proliferation of preosteoblastic MC3T3βE1 cells extracted
By extending the theory of Kurtz and Carpay, a detailed statistical theory of normal grain growth has been developed. The theory utilizes their concept of multiple distributions, i.e. the division of grains into topological classes (14 planar, 34 spatial) but unlike their treatment it does not requi