铝合金时效析出动力学及强化模型  

Aging precipitation kinetics and strengthening models for aluminum alloys

作　　者：王小娜[1] 韩利战[1] 顾剑锋[1] 

机构地区：[1]上海交通大学材料科学与工程学院上海市激光制造与材料改性重点实验室,上海200240

出　　处：《中国有色金属学报》2013年第10期2754-2768,共15页The Chinese Journal of Nonferrous Metals

基　　金："高档数控机床与基础制造装备"重大专项(2011ZX04014-052;2012ZX04012011)

摘　　要：研究铝合金热处理过程中微观组织与性能的演变规律,并建立能应用于工业生产的定量预测模型具有重要学术和工程应用价值。综合近年来关于铝合金时效过程中析出相演变和析出强化的模型及模拟的研究,分析和讨论以下几个方面的内容:模拟铝合金时效过程中析出相演变与析出强化的不同方法;铝合金时效过程中析出相微观组织的演变模型,包括形核、长大与粗化阶段,重点总结预测微观组织演变的计算方法;铝合金的强度影响因素及不同形貌析出相的强化模型;各种模型的应用和它们的优缺点以及未来可能的研究方向。The aluminum alloys play an important role in the application in the aerospace and automobile industries, the evolution of the microstructure and mechanical properties of aluminum alloys during the heat treatment were investigated extensively, and the quantitative predictive models with academic research and engineering application were established. The methods and models for the precipitation process of aluminum alloys in the past few years were reviewed, and the following aspects were analyzed and discussed, which are that the different simulation methods for precipitation evolution and strengthening for the aging process of aluminum alloys; the models for the precipitation evolution of aluminum alloys during aging process, including the nucleation, growth and coarsening of the particles; the factors affecting the mechanical properties of aluminum alloys and the precipitation strengthening models for precipitates with different shapes and the advantages and disadvantages of the models and possible future research.

关 键 词：析出热力学 析出动力学 强化模型 析出相 切过机制 绕过机制 临界半径 

分 类 号：TG166.3[金属学及工艺—热处理]