Modeling of mechanical alloying: Part I. deformation, coalescence, bdand fragmentation mechanisms
Modeling of mechanical alloying: Part I. deformation, coalescence, bdand fragmentation mechanisms
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DOI：
10.1007/bf02646683
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发表时间：
1994-12
期刊：
影响因子：
--
通讯作者：
D. Maurice;T. Courtney
中科院分区：
文献类型：
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作者：
D. Maurice;T. Courtney
一个模型的机械合金化过程中，适用于一个单一的碰撞事件涉及韧性物种，开发。构造简单的物理模型，允许开发的颗粒形状和硬度变化的分析表达式，在碰撞和规定的标准，颗粒断裂和冷焊。这些提供了一个“快照”，在一个单一的碰撞事件发生。该模型还考虑了碰撞介质之间捕获的粉末内的变形的异质性。这种异质性，连同模型的标准，然后可以被纳入一个计算方案，能够预测描述的粉末形态和性能的演变过程中的机械合金化，将在随后的文章中描述。
A model of the mechanical alloying process, applicable to a single collision event involving ductile species, is developed. Simple physical models are constructed that allow development of analytical expressions for particle shape and hardness changes during a collision and stipulation of criteria for particle fracture and cold welding. These provide a“snapshot” of that which transpires during a single collision event. The model also accounts for the heterogeneity of deformation within the powder trapped between colliding media. This heterogeneity, together with the model criteria, can then be incorporated within a computational scheme capable of predictive description of the evolution of powder morphology and properties during mechanical alloying, as will be described in a subsequent article.