ANALYTICAL MODELING OF GRAIN-GROWTH IN METALS AND ALLOYS IN THE PRESENCE OF GROWING AND DISSOLVING PRECIPITATES .1. NORMAL GRAIN-GROWTH
ANALYTICAL MODELING OF GRAIN-GROWTH IN METALS AND ALLOYS IN THE PRESENCE OF GROWING AND DISSOLVING PRECIPITATES .1. NORMAL GRAIN-GROWTH
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DOI：
10.1016/0956-7151(94)00488-4
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发表时间：
1995-07-01
期刊：
影响因子：
--
通讯作者：
GRONG, O
中科院分区：
文献类型：
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作者：
ANDERSEN, I;GRONG, O
目前的研究涉及在生长和溶解沉淀物存在的情况下金属和合金中晶粒生长的分析模型。在第一部分中，概述了正常晶粒生长模型的不同组成部分，并提出了微分方程，可以将平均晶粒尺寸计算为时间和温度的函数。然后通过分析和数值方法在固定的起始条件下求解这些方程，以评估等温热处理期间基体晶粒粗化行为。结果以新颖的“机制”图的形式呈现（通过利用群变量的概念），该图显示了在不稳定的第二相颗粒存在的情况下导致金属和合金中正常晶粒生长的各种过程之间的竞争。随附的论文（第二部分）描述了异常晶粒生长建模的分析方法。
The present investigation is concerned with analytical modelling of grain growth in metals and alloys in the presence of growing and dissolving precipitates. In Part I, the different components of the normal grain growth model are outlined and differential equations presented which allow the mean grain size to be calculated as a function of time and temperature. These equations have then been solved for fixed starting conditions by means of analytical and numerical methods to evaluate the matrix grain coarsening behaviour during isothermal heat treatment. The results are presented in the form of novel ''mechanism'' maps (by utilizing the concept of group variables) which show the conmpetition between the various processes that lead to normal grain growth in metals and alloys in the presence of unstable second phase particles. An analytical approach to the modelling of abnormal grain growth is described in an accompanying paper (Part II).