Microstructure and plastic deformation behavior of Ni3(Ti,X) (X = Nb,Al) single crystals with long-period geometrically closely packed crystal structures

被引：8
作者：
Hagihara, K. [1 ]
Tanaka, T. [1 ]
Fujimoto, H. [1 ]
Nakano, T. [1 ]
Umakoshi, Y. [1 ]
机构：
[1] Osaka Univ, Grad Sch Engn, Div Mat & Mfg Sci, Osaka 5650871, Japan
来源：
INTERMETALLICS | 2006年 / 14卷 / 10-11期
关键词：
long-period superlattices; ternary alloy systems; plastic deformation mechanisms; phase identification;
D O I：
10.1016/j.intermet.2005.10.020
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The crystal structure, phase stability and plastic deformation behavior of Ni-3(Ti1-xNbx) [x = 0, 0.01, 0.03, 0.05 or 0.10] and Ni3(Ti1-yAly) [y = 0.16 or 0.28] single crystals were investigated. The Substitution of Ti by Nb in Ni3Ti induced the formation of various long-period stacking ordered (LPSO) structures with 18-fold, 10-fold or 9-fold stacking sequences of closely packed plane (CPP) depending on the Nb content. In compression tests, the yield stress anomaly (YSA) appeared in ternary LPSO crystals as well as in binary Ni3Ti by slip on the CPP. The change in stacking sequence of CPP in the LPSO phases strongly affects the YSA behavior due to the change in APB energy on the non-closely packed plane. (C) 2006 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1332 / 1338
页数：7
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