Overview no. 130 - Size effects in materials due to microstructural and dimensional constraints: A comparative review
Overview no. 130 - Size effects in materials due to microstructural and dimensional constraints: A comparative review
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DOI：
10.1016/s1359-6454(98)00231-6
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发表时间：
1998-10-09
期刊：
影响因子：
9.4
通讯作者：
Arzt, E
中科院分区：
文献类型：
--
作者：
Arzt, E
尺寸对材料主要力学性能的影响在一阶水平上进行了综述。微结构的限制，例如，由于第二相颗粒和晶界，和尺寸限制在小尺度材料，如薄膜的区别。处理的现象是塑性，蠕变和磁性的颗粒强化;晶粒尺寸强化和霍尔-Fetch行为的限制以及薄膜和多层膜的屈服。重要的方面可以从特征长度（其可以与在给定应力下的位错曲率半径或磁交换长度一样不同）与尺寸参数（晶粒或颗粒尺寸或膜厚度）的相互作用的观点来理解。它表明，这样的方法可以揭示有趣的类比，否则非常不同的性质的材料。(C)1998年冶金学报由爱思唯尔科技有限公司出版。保留所有权利。
Effects of size on predominantly mechanical properties of materials are reviewed at a first-order level. Microstructural constraints, e.g, due to second-phase particles and grain boundaries, and dimensional constraints in small-scale materials such as thin films are distinguished. Phenomena addressed are particle strengthening in plasticity, creep and magnetism; grain size strengthening and the limits to Hall-Fetch behavior as well as the yielding of thin films and multilayers. Important aspects can be understood from the point-of-view of the interaction of a characteristic length (which may be as diverse as the dislocation radius of curvature at a given stress or the magnetic exchange length) with a size parameter (grain or particle size, or film thickness). It is demonstrated that such an approach can reveal interesting analogies between otherwise very different properties of materials. (C) 1998 Acta Metallurgica Inc. Published by Elsevier Science Ltd. All rights reserved.