Characterizations of precipitate phases in a Ti-Ni-Pd alloy

被引：22
作者：
Yang, F. [1 ]
Kovarik, L. [1 ,2 ]
Phillips, P. J. [1 ]
Noebe, R. D. [3 ]
Mills, M. J. [1 ]
机构：
[1] Ohio State Univ, Columbus, OH 43202 USA
[2] Pacific NW Natl Lab, EMSL, Richland, WA 99352 USA
[3] NASA, Glenn Res Ctr, Cleveland, OH 44135 USA
来源：
SCRIPTA MATERIALIA | 2012年 / 67卷 / 02期
关键词：
Shape memory alloys; Precipitation; Crystal structure; High-angle annular dark field; SHAPE-MEMORY ALLOYS; TRANSFORMATIONS; STEM; RICH;
D O I：
10.1016/j.scriptamat.2012.04.003
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The microstructure of 46Ti-37.5Ni-16.5Pd (at.%) alloy was investigated by electron diffraction and high-resolution scanning transmission electron microscopy. The phase content and stability were determined at several different temperatures and times. Aging at 400 degrees C for 1 h results in a new phase (P1-phase), which is consumed by P-phase at longer aging times. At 450 degrees C, the P1-phase appears first, and then coexists with P-phase. At 500 degrees C, the entire alloy transforms into the P1-phase. At 550 degrees C, Ti-3(Ni,Pd)(4) phase begins to form. (C) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：145 / 148
页数：4
相关论文
共 14 条
[1]   MARTENSITIC TRANSFORMATIONS IN GOLD-TITANIUM, PALLADIUM-TITANIUM A PLATINUM-TITANIUM ALLOYS NEAR EQUIATOMIC COMPOSITION [J].
DONKERSLOOT, HC ;
VANVUCHT, JH .
JOURNAL OF THE LESS-COMMON METALS, 1970, 20 (02) :83-+
[2]   SIMULATION OF ANNULAR DARK FIELD STEM IMAGES USING A MODIFIED MULTISLICE METHOD [J].
KIRKLAND, EJ ;
LOANE, RF ;
SILCOX, J .
ULTRAMICROSCOPY, 1987, 23 (01) :77-96
[3]   Structural analysis of a new precipitate phase in high-temperature TiNiPt shape memory alloys [J].
Kovarik, L. ;
Yang, F. ;
Garg, A. ;
Diercks, D. ;
Kaufman, M. ;
Noebe, R. D. ;
Mills, M. J. .
ACTA MATERIALIA, 2010, 58 (14) :4660-4673
[4]  
Lindquist P.G., 1990, ENG ASPECTS SHAPE ME, P58, DOI DOI 10.1016/B978-0-7506-1009-4.50009-3
[5]   INCOHERENT IMAGING OF ZONE AXIS CRYSTALS WITH ADF STEM [J].
LOANE, RF ;
XU, P ;
SILCOX, J .
ULTRAMICROSCOPY, 1992, 40 (02) :121-138
[6]   High temperature shape memory alloys [J].
Ma, J. ;
Karaman, I. ;
Noebe, R. D. .
INTERNATIONAL MATERIALS REVIEWS, 2010, 55 (05) :257-315
[7]   Martensitic and order-disorder transformations in Ti45Pd45Ni10 alloy [J].
Nagasako, M. ;
Nishida, M. ;
Murakmi, Y. ;
Shindo, D. .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2006, 438 :848-851
[8]   Phase transformations in Pd- and Ni-rich Ti-Pd-Ni alloys [J].
Nagasako, M ;
Nishida, M .
JOURNAL DE PHYSIQUE IV, 2003, 112 :1043-1046
[9]   FURTHER ELECTRON-MICROSCOPY STUDIES OF THE TI11NI14 PHASE IN AN AGED TI-52AT-PERCENT-NI SHAPE MEMORY ALLOY [J].
NISHIDA, M ;
WAYMAN, CM ;
KAINUMA, R ;
HONMA, T .
SCRIPTA METALLURGICA, 1986, 20 (06) :899-904
[10]   THE SHAPE-MEMORY EFFECT IN A TI50PD50 ALLOY [J].
OTSUKA, K ;
ODA, K ;
UENO, Y ;
PIAO, M ;
UEKI, T ;
HORIKAWA, H .
SCRIPTA METALLURGICA ET MATERIALIA, 1993, 29 (10) :1355-1358
12