An Experimental Study on Evolution of Grain-Scale Stress/Strain and Geometrical Necessary Dislocations in Advanced TA15 Titanium Alloy during Uniaxial Tension Deformation

被引:2
作者
He, Dong [1 ]
Yasmeen, Tabassam [2 ]
Li, Qiang [1 ]
Li, Hong [1 ]
Zaefferer, Stefan [3 ]
机构
[1] North China Univ Technol, Sch Mech & Mat Engn, Beijing 100144, Peoples R China
[2] Imperial Coll London, Dept Mech Engn, London SW7 2AZ, England
[3] Max Planck Inst Eisenforsch GmbH, Abt Mikrostrukturphys & Umformtech, Max Planck Str 1, D-40237 Dusseldorf, Germany
基金
中国国家自然科学基金;
关键词
ELECTRON BACKSCATTER DIFFRACTION; INTERGRANULAR STRAINS; PLASTIC-DEFORMATION; STAINLESS-STEEL; HCP METALS; TI-6AL-4V; ORIENTATION; FATIGUE; MORPHOLOGY; TEXTURE;
D O I
10.1002/adem.201600306
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
This study aims to characterize the spatial distributions of grain-scale stress/strain and geometrical necessary dislocations (GNDs) in TA15 titanium alloy subjected to tensile deformation at room temperature. The microstructures under different strains are investigated through electron backscatter diffraction (EBSD) measurements. Evolution of intergranular stress/strain is revealed by analysis of high angular resolution EBSD patterns. The spatial distributions of GNDs are calculated using a self-developed routine. Results indicate that many factors influence the spatial distributions of grain-scale residual stress/strain and GNDs during plastic deformation, and the dominant factor varies with the changes in microstructure characteristics and macroscopic deformation parameters.
引用
收藏
页数:10
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