Lamellar orientation control in a Ti-46Al-5Nb alloy by directional solidification

被引：50

作者：

Ding, X. F. ^{[1
]}

Lin, J. P. ^{[1
]}

Zhang, L. Q. ^{[1
]}

Su, Y. Q. ^{[2
]}

Wang, H. L. ^{[1
]}

Chen, G. L. ^{[1
]}

机构：

[1] Univ Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China

[2] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China

来源：

SCRIPTA MATERIALIA | 2011年 / 65卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Bridgman technique; Directional solidification; Titanium aluminides; Grain growth; Lamellar orientation; MECHANICAL-PROPERTIES; TIAL ALLOYS; HIGH NB; MICROSTRUCTURES; INGOTS;

D O I：

10.1016/j.scriptamat.2011.02.011

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Lamellar microstructures of the Ti-46Al-5Nb alloy solidifying through the primary 13 phase were successfully aligned parallel to the growth direction by using the double directional solidification (DS) technique. The same growth conditions in both DS processes and the completion of the peritectic transformation in the dendritic regions are necessary for the primary beta phase TiAl alloys to control the lamellar orientation. (C) 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：61 / 64

页数：4

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