Micro-structural analysis of self-accommodating martensites in Cu-11.92 wt%Al-3.78 wt%Ni shape memory alloy

被引：26

作者：

Sari, Ugur ^{[1
]}

Aksoy, Ilhan ^{[2
]}

机构：

[1] Kirikkale Univ, Dept Comp Educ & Instruct Technol, Fac Med, TR-71450 Kirikkale, Turkey

[2] Kirikkale Univ, Dept Phys, Fac Sci & Arts, TR-71450 Kirikkale, Turkey

来源：

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY | 2008年 / 195卷 / 1-3期

关键词：

shape memory alloy (SMA); self accommodation; martensite variant; transmission electron microscopy (TEM); scanning electron microscopy (SEM);

D O I：

10.1016/j.jmatprotec.2007.04.116

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Morphologies and configurations of the self-accommodating martensites in Cu-11.92 wt%Al-3.78wt%Ni shape memory alloy were studied by means of scanning electron microscopy (SEM) and transmission electron microscopy (TEM). From microstructural observations, it is clearly observed that the self- accommodating martensites have typical plate group configuration. Each martensite plate group consists of four variants A, B, C, and D. Usually, variants A and C (or B and D) form characteristic spear morphology and variants A and D (or B and C) form fork morphology. Variants A and C are twin-related with respect to the ((1) over bar (2) over bar 1)(2H) mirror plane of the 2H martensite. Additionally, TEM observations reveal that two kinds of close-packed martensite structures, 2H (gamma(')(1)) and 18R (beta(')(1)) martensites, coexist in the quenched alloy. These structures occur by the localized formation of four variants of a plate group in a self-accommodating manner to minimize the total shape change. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：72 / 76

页数：5

共 26 条

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Sari, U
Aksoy, H
JOURNAL OF ALLOYS AND COMPOUNDS, 2006, 417 (1-2) : 138 - 142
[2] EBSD and TEM study of self-accommodating martensites in Cu75.7Al15.4Mn8.9 shape memory alloy
Wang, RH
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Chen, XM
Tan, SS
ACTA MATERIALIA, 2002, 50 (07) : 1835 - 1847
[3] Thermal analysis of Cu-14.82 wt% Al-0.4 wt% Be shape memory alloy
Canan Aksu Canbay
Ayşe Aydoğdu
Journal of Thermal Analysis and Calorimetry, 2013, 113 : 731 - 737
[4] Thermal analysis of Cu-14.82 wt% Al-0.4 wt% Be shape memory alloy
Canbay, Canan Aksu
Aydogdu, Ayse
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, 2013, 113 (02) : 731 - 737
[5] Effects of γ irradiation on the characteristics of the Cu-13wt.%Al-4wt.%Ni shape memory alloy
Zengin, R
Ceylan, M
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 2004, 217 (02): : 327 - 332
[6] Effect of the Temperature of Isothermal Upsetting on the Structure and the Properties of the Shape Memory Cu–14 wt % Al–4 wt % Ni Alloy
A. E. Svirid
A. V. Luk’yanov
V. G. Pushin
E. S. Belosludtseva
N. N. Kuranova
A. V. Pushin
Physics of Metals and Metallography, 2019, 120 : 1159 - 1165
[7] Use of time history speckle pattern and pulsed photoacoustic techniques to detect the self-accommodating transformation in a Cu-Al-Ni shape memory alloy
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MATERIALS CHARACTERIZATION, 2010, 61 (05) : 518 - 524
[8] Nanometric AlNi Precipitation in a 84.68 wt.% Cu-11.25 wt.%Al-4.07 wt.%Ni Shape Memory Alloy
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DIFFUSION IN SOLIDS AND LIQUIDS VIII, 2013, 334-335 : 1 - +
[9] Stable phase formation in a 85.67 wt.% Cu-9.9 wt.% Al-4.43 wt.% Ni shape memory alloy
Chentouf, S. M.
Bouabdallah, M.
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Keddam, M.
ESOMAT 2009 - 8TH EUROPEAN SYMPOSIUM ON MARTENSITIC TRANSFORMATIONS, 2009,
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Zengin, R
Ceylan, M
MATERIALS LETTERS, 2004, 58 (1-2) : 55 - 59

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