Quantitative 3-D morphologic and distributional study of Ni4Ti3 precipitates in a Ni51Ti49 single crystal alloy

被引：10

作者：

Cao, Shanshan ^{[1
,2
]}

Pourbabak, Saied ^{[1
]}

Schryvers, Dominique ^{[1
]}

机构：

[1] Univ Antwerp, EMAT, B-2020 Antwerp, Belgium

[2] S China Univ Technol, Dept Met Mat Sci & Engn, Sch Mat Sci & Engn, Guangzhou 510640, Peoples R China

来源：

SCRIPTA MATERIALIA | 2012年 / 66卷 / 09期

关键词：

Precipitation; Focused ion beam (FIB)/Scanning electron microscopy (SEM); 3-D reconstruction; Shape memory alloys (SMA); Strain aging; SHAPE-MEMORY ALLOYS; MARTENSITIC TRANSFORMATIONS; NI-TI; KINETICS; BEHAVIOR;

D O I：

10.1016/j.scriptamat.2012.01.045

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The size, shape and distribution of Ni4Ti3 precipitates in Ni51Ti49 single crystals annealed under stress-free and < 1 1 1 >(B2) compressive conditions are studied via focused ion beam/scanning electron microscopy slice-and-view. The precipitates in the stress-free material grow in autocatalytic pockets with larger size, lower number density, flatter shape and larger inter-particle distance than in the compressed material. Nevertheless, a new quantification method called water penetration reveals that, due to the precipitate alignment, martensite can grow more easily in the compressed material perpendicular to the compression direction. (C) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：650 / 653

页数：4

共 17 条

[1] Quantitative three-dimensional analysis of Ni4Ti3 precipitate morphology and distribution in polycrystalline Ni-Ti [J].

Cao, S. ;

Nishida, M. ;

Schryvers, D. .

ACTA MATERIALIA, 2011, 59 (04) :1780-1789

[2]

Cao S, 2008, MATER SCI FORUM, V583, P277, DOI 10.4028/www.scientific.net/MSF.583.277

[3] Optimization of a FIB/SEM slice-and-view study of the 3D distribution of Ni4Ti3 precipitates in Ni-Ti [J].

Cao, S. ;

Tirry, W. ;

Van Den Broek, W. ;

Schryvers, D. .

JOURNAL OF MICROSCOPY, 2009, 233 (01) :61-68

[4] Focused ion beam/scanning electron microscopy tomography and conventional transmission electron microscopy assessment of Ni4Ti3 morphology in compression-aged Ni-rich Ni-Ti single crystals [J].

Cao, Shanshan ;

Somsen, Christoph ;

Croitoru, Mihail ;

Schryvers, Dominique ;

Eggeler, Gunther .

SCRIPTA MATERIALIA, 2010, 62 (06) :399-402

[5] Precipitation kinetics of Ti3Ni4 in polycrystalline Ni-rich TiNi alloys and its relation to abnormal multi-stage transformation behavior [J].

Fan, G. ;

Zhou, Y. ;

Chen, W. ;

Yang, S. ;

Ren, X. ;

Otsuka, K. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2006, 438 :622-626

[6] Three-dimensional analysis of porous BaTiO3 ceramics using FIB nanotomography [J].

Holzer, L ;

Indutnyi, F ;

Gasser, PH ;

Münch, B ;

Wegmann, M .

JOURNAL OF MICROSCOPY, 2004, 216 :84-95

[7] THERMODYNAMICS AND KINETICS OF MARTENSITIC TRANSFORMATIONS [J].

KAUFMAN, L ;

COHEN, M .

PROGRESS IN METAL PHYSICS, 1958, 7 :165-246

[8] PHASE FIELD SIMULATION OF THE EFFECT OF APPLIED EXTERNAL STRESS ON GROWTH KINETICS OF COHERENT Ni4Ti3 PRECIPITATE IN NiTi ALLOY [J].

Ke Changbo ;

Ma Xiao ;

Zhang Xinping .

ACTA METALLURGICA SINICA, 2010, 46 (08) :921-929

[9] On the influence of heterogeneous precipitation on martensitic transformations in a Ni-rich NiTi shape memory alloy [J].

Khalil-Allafi, J ;

Eggeler, G ;

Dlouhy, A ;

Schmahl, WW ;

Somsen, C .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2004, 378 (1-2) :148-151

[10] Ni4Ti3-precipitation during aging of NiTi shape memory alloys and its influence on martensitic phase transformations [J].

Khalil-Allafi, J ;

Dlouhy, A ;

Eggeler, G .

ACTA MATERIALIA, 2002, 50 (17) :4255-4274

← 1 2 →