Study of Dislocation Boundary Structure in Al-Li Alloy During Bending

被引：14

作者：

Jin, Xiao ^{[1
]}

Fu, Bao-Qin ^{[2
]}

Zhang, Cheng-Lu ^{[1
]}

Liu, Wei ^{[1
]}

机构：

[1] Tsinghua Univ, Sch Mat Sci & Engn, Adv Mat Lab, Beijing 100084, Peoples R China

[2] Sichuan Univ, Inst Nucl Sci & Technol, Key Lab Radiat Phys & Technol, Chengdu 610065, Peoples R China

来源：

ACTA METALLURGICA SINICA-ENGLISH LETTERS | 2015年 / 28卷 / 09期

关键词：

Al-Li alloy; Plastic deformation; Electron backscattering diffraction (EBSD); Microstructure; GRAIN-ORIENTATION DEPENDENCE; ALUMINUM SINGLE-CRYSTAL; DEFORMATION MICROSTRUCTURE; LOCAL CRYSTALLOGRAPHY; LARGE STRAINS; SLIP PATTERN; ALIGNMENT; STRENGTH; METALS; EBSD;

D O I：

10.1007/s40195-015-0306-9

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The dislocation boundary structures of 2060-T8 alloy during bending were investigated by backscattered electron imaging, electron backscattered diffraction, and misorientation axes maps. Experimental result shows that typical dislocation boundary structures, which depend on grains' orientation, are formed in grains during bending. The microstructure of type A is mainly observed in grains near brass, copper, and Goss orientations; microstructure of type B is mainly found in grains near S orientation; microstructure of type C is mainly seen in grains near Cube orientation. The angle between geometrically necessary boundaries (GNBs) and force axis is in the range of -45 degrees to -30 degrees and 30 degrees to 45 degrees Most of the GNBs are approximately parallel to the trace of {111} slip planes which are identified by Schmid factor analysis.

引用

页码：1149 / 1155

页数：7

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