3D electron backscatter diffraction study of a lath morphology in additively manufactured Ti-6Al-4V

被引：31

作者：

DeMott, Ryan ^{[1
]}

Collins, Peter ^{[2
]}

Kong, Charlie ^{[3
]}

Liao, Xiaozhou ^{[4
]}

Ringer, Simon ^{[4
]}

Primig, Sophie ^{[1
]}

机构：

[1] UNSW Sydney, Sch Mat Sci & Engn, Sydney, NSW 2052, Australia

[2] Iowa State Univ, Dept Mat Sci & Engn, Ames, IA 50011 USA

[3] UNSW Sydney, Electron Microscope Unit, Sydney, NSW 2052, Australia

[4] Univ Sydney, Australian Ctr Microscopy & Microanal, Sch Aerosp Mech & Mechatron Engn, Sydney, NSW, Australia

来源：

ULTRAMICROSCOPY | 2020年 / 218卷

基金：

澳大利亚研究理事会;

关键词：

Titanium alloys; Electron beam methods; 3D reconstruction; electron backscattering diffraction (EBSD); 3D-EBSD; Additive manufacturing; GRAIN-BOUNDARY-ALPHA; VARIANT SELECTION; EQUILIBRIUM SHAPE; TITANIUM-ALLOY; BETA-PHASE; BEAM; MICROSTRUCTURES; WIDMANSTATTEN; TEXTURE; NUCLEI;

D O I：

10.1016/j.ultramic.2020.113073

中图分类号：

TH742 [显微镜];

学科分类号：

摘要：

Titanium alloys exhibit complex, multi-phase microstructures which form during liquid-solid and solid-solid phase transformations. These phase transformations govern the microstructural evolution and are potentially more complex during additive manufacturing due to large thermal gradients and inhomogeneities. The prototypical fundamental unit of titanium microstructures are the a laths, and investigations into their three-dimensional morphology may provide new insights. A prior beta-grain boundary, 3-variant clusters and interconnected laths were studied in 3D in electron-beam printed Ti-6Al-4V using a plasma FIB. These key features are of interest for studying variant selection in additive manufacturing.

引用

页数：7

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