Mechanical properties of (Fe,Co)(33)Zr-67 alloys

被引：15

作者：

Alves, H ^{[1
]}

Ferreira, M ^{[1
]}

Koster, U ^{[1
]}

Muller, B ^{[1
]}

机构：

[1] INST SUPER TECN,DEPT CHEM ENGN,GRP CORROSAO & PROTECCAO,P-1096 LISBON,PORTUGAL

来源：

METASTABLE, MECHANICALLY ALLOYED AND NANOCRYSTALLINE MATERIALS, PTS 1 AND 2 | 1996年 / 225卷

关键词：

crystallization; Hall-Petch equation; microhardness; mechanical properties; metallic glasses; nanocrystalline materials;

D O I：

10.4028/www.scientific.net/MSF.225-227.769

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

According to the Hall-Fetch equation materials with small grain sizes exhibit large values of strength (or hardness). However for a number of nanocrystalline materials this effect is not observed. Vickers microhardness of nanocrystalline (Fe,C0)(33)Zr-67 prepared by crystallization of amorphous precursors has been measured over a wide range of grain sizes. Although the observed deviation from the Hall-Fetch equation could be explained with the presence of a still remaining amorphous matrix, the application of this formula to materials with grain sizes too small to hold even a single dislocation should be questioned. Grain boundary sliding is assumed to control deformation in fully crystallized nanocrystalline (Fe,C0)(33)Zr-67.

引用

页码：769 / 774

页数：6

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