CORRESPONDENCE BETWEEN STRAIN AND GRAIN BOUNDARY EVOLUTION IN PURE ALUMINIUM DURING HIGH PRESSURE TORSION TO LARGE STRAINS

被引:0
作者
Orlov, Dmitry [1 ]
Todaka, Yoshikazu
Umemoto, Minoru
Tsuji, Nobuhiro [1 ]
机构
[1] Osaka Univ, Dept Adapt Machine Syst, Grad Sch Engn, Osaka 5650871, Japan
来源
NANOSTRUCTURED METALS: FUNDAMENTALS TO APPLICATIONS | 2009年
关键词
SEVERE PLASTIC-DEFORMATION; METALS; MICROSTRUCTURE; LIMITS; CU;
D O I
暂无
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
In this report, evolution of grain boundary structure in a 99.99% purity Al during high pressure torsion (HPT) is investigated using high-resolution electron backscatter diffraction analysis. It is found that evolution of the deformation-induced boundaries is in a fairly good correspondence with hypothesized simple-shear mode of deformation during HPT. However, the correspondence is lost at equivalent strain level of similar to 8 when the grain refinement saturates. Comparison of the 4N-Al structure evolution deformed by different methods further confirms correctness of our approach to calculate equivalent values during HPT.
引用
收藏
页码:285 / 292
页数:8
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