Isomorphic grain inoculation in Ti-6Al-4V during additive manufacturing

被引：7
|
作者：
Kennedy, J. R. [1 ]
Davis, A. E. [1 ]
Caballero, A. [2 ]
Garner, A. [1 ]
Donoghue, J. [1 ]
Williams, S. [2 ]
Zollinger, J. [3 ]
Bouzy, E. [4 ]
Pickering, E. J. [1 ]
Prangnell, P. B. [1 ]
机构：
[1] Univ Manchester, Dept Mat, Manchester M13 9PL, Lancs, England
[2] Cranfield Univ, Welding Engn & Laser Proc Ctr, Bedford MK43 0PL, Beds, England
[3] Univ Lorraine, Inst Jean Lamour, Campus ARTEM,Allee Andre Guinier, F-54011 Nancy, France
[4] Univ Lorraine, LEM3, Arts & Metiers ParisTech, CNRS, F-57000 Metz, France
来源：
MATERIALS LETTERS-X | 2020年 / 8卷
基金：
“创新英国”项目; 英国工程与自然科学研究理事会;
关键词：
Solidification; Titanium alloys; Epitaxial growth; Additive manufacturing; HETEROGENEOUS NUCLEATION; PHASE;
D O I：
10.1016/j.mlblux.2020.100057
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The potential for using isomorphic inoculation (ISI) to grain refine titanium alloys in additive manufacturing was investigated by adding TiAlNb particles to Ti-64 during building test samples. A surviving particle was identified and its crystallographic relationship with the matrix studied by transmission Kikuchi diffraction. The particle and bulk matrix grain were shown to have the same crystallographic orientation, demonstrating that the ISI mechanism of solidification bypasses the nucleation step in favour of direct epitaxial growth. (C) 2020 The Author(s). Published by Elsevier B.V.
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页数：4
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