...
【24h】

The role of stress development and relaxation on crystal growth in glass

机译:应力发展和松弛对玻璃晶体生长的作用

获取原文
获取原文并翻译 | 示例
           

摘要

The role of internal stresses energy is usually neglected when crystallization kinetics is considered. The common argument is that stress is relaxing too fast to affect the process. In this article we develop a generalized formalism to describe steady-state growth kinetics in viscoelastic media. The residual stress energy results from interplay between the rate of stress development (due to the propagation of a crystal throughout the matrix) and rate of stress dissipation (due to relaxation of the viscous matrix). The degree to which the stress energy can relax depends on the ratio of tau(c)/tau(r) the characteristic time for crystal growth, tau(c), and the relaxation time, tau(r). The present results challenge the widespread fallacy that internal stresses relax too fast to affect crystal growth. Our model explains the often observed lack of agreement between the theoretical predictions (without taking into account the stresses energy development) and experimental data. (c) 2007 Elsevier B.V. All rights reserved.
机译:考虑结晶动力学时,通常忽略了内部应力能量的作用。普遍的论点是,压力过快地释放而不会影响过程。在本文中,我们开发了一种广义的形式主义来描述粘弹性介质中的稳态生长动力学。残余应力能量来自应力发展速率(由于晶体在整个基体中的传播)和应力耗散速率(由于粘性基体的松弛)之间的相互作用。应力能量可以松弛的程度取决于tau(c)/ tau(r)晶体生长的特征时间tau(c)和松弛时间tau(r)之比。目前的结果挑战了普遍的谬论,即内部应力松弛太快而无法影响晶体生长。我们的模型解释了经常观察到的理论预测(不考虑应力能量发展)与实验数据之间缺乏一致性的情况。 (c)2007 Elsevier B.V.保留所有权利。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号