THE EFFECT OF GRAIN SIZE ON THE MECHANICAL PROPERTIES OF ALUMINUM

被引：30

作者：

Jeong, G. ^{[1
]}

Park, J. ^{[1
]}

Nam, S. ^{[1
]}

Shin, S-E. ^{[2
]}

Shin, J. ^{[2
]}

Bae, D. ^{[2
]}

Choi, H. ^{[1
]}

机构：

[1] Kookmin Univ, Sch Adv Mat Engn, Seoul, South Korea

[2] Yonsei Univ, Sch Adv Mat Engn, Seoul 120749, South Korea

来源：

ARCHIVES OF METALLURGY AND MATERIALS | 2015年 / 60卷 / 02期

基金：

新加坡国家研究基金会;

关键词：

Nanocrystalline aluminum; Grain size; Tensile behavior; Microstructure; Mechanical properties; NANOCRYSTALLINE AL; DEFORMATION; BEHAVIOR; STRENGTH; IRON;

D O I：

10.1515/amm-2015-0115

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Although many studies have focused on the unique plastic deformation behavior of nanocrystalline aluminum (e.g., the positive deviation from Hall-Petch relation, the unusual yield-drop phenomenon in tensile mode, etc.), the data reported by different research groups are inconsistent with each other, possibly because of different fabrication processes. In this study, aluminum samples with a wide grain-size spectrum - from a few micrometers down to 100 nanometers - are manufactured by powder metallurgy. The grain size was measured by X-ray diffraction analysis and transmission electron microscope observation. Furthermore, the tensile behavior, which varied according to a grain size, is discussed with a comparison of the theoretical models.

引用

页码：1287 / 1291

页数：5

共 31 条

[1]

Abrams H., 1971, Metallography, V4, P59, DOI 10.1016/0026-0800(71)90005-X

[2] Deformation mechanism transitions in nanoscale fcc metals [J].