Received date: 2014-01-08
Revised date: 2014-01-08
Online published: 2014-02-20
Supported by
Supported by Danish National Research Foundation (No.DNRF86-5) and National Natural Science Foundation of China ( No.51261130091)
The grain size effect and the specimen size effect on the strength of metals are briefly reviewed with respect to their history and current status of research. It is revealed that the fundamental strengthening mechanisms responsible for these two types of size effect are to increase the resistance to dislocation motion and to dislocation generation, respectively. It is shown that both strengthening mechanisms take place in some nanostructured metals, which leads to a suggestion to use these two mechanisms for optimizing the strength and ductility of nanostructured metals. This suggestion is verified by some results obtained in nanostructured pure aluminum.
Xiaoxu HUANG . SIZE EFFECTS ON THE STRENGTH OF METALS[J]. Acta Metall Sin, 2014 , 50(2) : 137 -140 . DOI: 10.3724/SP.J.1037.2014.00016
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