Structure and mechanical properties of iron subjected to surface severe plastic deformation by attrition: II. Mechanical properties of nano- and submicrocrystalline iron

被引：8

作者：

Yurkova A.I. ^{[1
,2
]}

Milman Y.V. ^{[2
]}

Byakova A.V. ^{[1
,2
]}

机构：

[1] Kiev Polytechnical Institute, National Technical University of Ukraine, Kiev 03056

[2] Institute of Problems of Materials Science, National Academy of Sciences of Ukraine

来源：

Russian Metallurgy (Metally) | 2010年 / 2010卷 / 4期

关键词：

Severe Plastic Deformation; RUSSIAN Metallurgy; Triple Junction; Grain Boundary Slide; Armco Iron;

D O I：

10.1134/S0036029510040026

中图分类号：

学科分类号：

摘要：

Depth-sensing indentation is used to study the effect of grain refinement to submicro- and nanograins on the mechanical properties (hardness, plasticity, Young's modulus) of armco iron subjected to severe plastic deformation by attrition in argon. In contrast to fcc metals, where the hardness increases and the plasticity decreases as the grain size decreases to 20 nm, the hardness of bcc iron decreases from 5.8 to 3.7 GPa and plasticity δA increases from 0.82 to 0.87 as the grain size decreases from 50 to 20 nm. © 2010 Pleiades Publishing, Ltd.

引用

页码：258 / 263

页数：5

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