Grain growth phenomena in tungsten wire

被引：17

作者：

Almanstotter, J

Ruhle, M

机构：

[1] OSRAM GmbH, D-86830 Schwabmunchen, Germany

[2] Max Planck Inst Met Forsch, Inst Werkstoffwissensch, D-70174 Stuttgart, Germany

来源：

INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS | 1997年 / 15卷 / 5-6期

关键词：

D O I：

10.1016/S0263-4368(96)00006-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This paper describes a three-dimensional lattice model for the study of the recrystallization and grain growth of tungsten wires in comparison to additional experiments. Microstructures similar to experimental ones were obtained. The experimentally obtained grain size data was used to determine the grain growth exponent and the activation energy for grain boundary migration at temperatures ranging from 1500 to 1900 degrees C. The evolution with time and temperature of the average grain size has been calculated by the Monte-Carlo method. For this, a relation between length and time scale in simulation and experiment, based on intrinsic material parameters, was developed. In general, the results agree very well with the experimental observations. (C) 1997 Elsevier Science Ltd.

引用

页码：295 / 300

页数：6

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