Grain boundary plane manipulation in directionally solidified bicrystals and tricrystals

被引：9

作者：

Ware, Logan G. ^{[1
]}

Suzuki, Daniel H. ^{[1
]}

Wicker, Kelsi R. ^{[1
]}

Cordero, Zachary C. ^{[1
]}

机构：

[1] Rice Univ, Mat Sci & NanoEngn, Houston, TX 77005 USA

来源：

SCRIPTA MATERIALIA | 2018年 / 152卷

关键词：

Solidification; Additive manufacturing; Crystal growth; Grain boundaries; DIFFRACTION CONTRAST TOMOGRAPHY; CORROSION;

D O I：

10.1016/j.scriptamat.2018.03.047

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We report a novel crystal growth technique for manipulating the grain structure of directionally solidified bicrystals, tricrystals, and other higher order oligocrystals. Controlling both the direction of local heat flux and the thermodynamic forces acting on the grain boundary, we can continuously vary grain boundary position and orientation, a level of control not possible using traditional processing strategies. This processing method can now specify many combinations of the five crystallographic grain boundary parameters in a single specimen, meaning large portions of both the grain boundary and triple junction parameter spaces can be sampled quickly and efficiently. (C) 2018 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：98 / 101

页数：4

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