Thermal analysis of Cu-14.82 wt% Al-0.4 wt% Be shape memory alloy

被引：29

作者：

Canbay, Canan Aksu ^{[1
]}

Aydogdu, Ayse ^{[2
]}

机构：

[1] Firat Univ, Dept Phys, Fac Sci, TR-23169 Elazig, Turkey

[2] Gazi Univ, Fac Sci, Dept Phys, Superconduct & Thermal Anal Lab, Ankara, Turkey

来源：

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 2013年 / 113卷 / 02期

关键词：

Shape memory alloys; Transformation temperatures; Enthalpy; Entropy; CuAlBe; THERMOELASTIC MARTENSITIC TRANSFORMATIONS; BETA-CUALBE ALLOYS; CU-RICH PORTION; PHASE-EQUILIBRIA; AL; KINETICS; DECOMPOSITION; BEHAVIOR; STABILITY; SYSTEM;

D O I：

10.1007/s10973-012-2792-6

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

In the present study, the transformation temperatures and shape memory effect of the Cu-14.82 wt% Al-0.4 wt% Be shape memory alloy were studied. The structural properties of the alloys were characterized by X-ray diffraction. The crystal structure analysis of the alloy shows a thermoelastic transformation from an ordered parent-phase of DO3 type to the M18R martensite. The microstructure of the alloy was investigated by optical micrographs. The transformation temperatures, enthalpy and entropy values of the alloy were determined by differential scanning calorimetry. Thermogravimetric and differential thermal analysis measurements were performed to obtain the ordered-disordered phase transformations. The activation energy values determined from two different methods were found to be 306.53 kJ mol(-1) for Kissinger and 298.57 kJ mol(-1) Ozawa.

引用

页码：731 / 737

页数：7

共 28 条

[1]

Aksu Canbay C, 2010, THESIS FIRAT U ELAZI

[2]

Aksu Canbay C, 2010, TURK PHYS SOC 27 INT

[3] Ageing study of Cu-Al-Be hypoeutectoid shape memory alloy [J].

Chentouf, S. M. ;

Bouabdallah, M. ;

Cheniti, H. ;

Eberhardt, A. ;

Patoor, E. ;

Sari, A. .

MATERIALS CHARACTERIZATION, 2010, 61 (11) :1187-1193

[4] Effect of γ2-phase precipitates on the martensitic transformation of a β-CuAlBe shape memory alloy [J].

Cuniberti, A. ;

Montecinos, S. ;

Lovey, F. C. .

INTERMETALLICS, 2009, 17 (06) :435-440

[5] The refinement treatment of martensite in Cu-11.38 wt.%Al-0.43 wt.%Be shape memory alloys [J].

Hsu, C. A. ;

Wang, W. H. ;

Hsu, Y. F. ;

Rehbach, W. P. .

JOURNAL OF ALLOYS AND COMPOUNDS, 2009, 474 (1-2) :455-462

[6] Phase equilibria and Heusler phase stability in the Cu-rich portion of the Cu-Al-Mn system [J].

Kainuma, R ;

Satoh, N ;

Liu, XJ ;

Ohnuma, I ;

Ishida, K .

JOURNAL OF ALLOYS AND COMPOUNDS, 1998, 266 (1-2) :191-200

[7] Thermodynamic assessment of the stabilization effect in deformed shape memory alloy martensite [J].

Kato, Hiroyuki ;

Yasuda, Yohei ;

Sasaki, Kazuaki .

ACTA MATERIALIA, 2011, 59 (10) :3955-3964

[8] REACTION KINETICS IN DIFFERENTIAL THERMAL ANALYSIS [J].

KISSINGER, HE .

ANALYTICAL CHEMISTRY, 1957, 29 (11) :1702-1706

[9] Phase equilibria in the Cu-rich portion of the Cu-Al binary system [J].

Liu, XJ ;

Ohnuma, I ;

Kainuma, R ;

Ishida, K .

JOURNAL OF ALLOYS AND COMPOUNDS, 1998, 264 (1-2) :201-208

[10] Effect of Ce addition on the microstructure and damping properties of Cu-Al-Mn shape memory alloys [J].

Lu, Xili ;

Chen, Feng ;

Li, Weishu ;

Zheng, Yufeng .

JOURNAL OF ALLOYS AND COMPOUNDS, 2009, 480 (02) :608-611

← 1 2 3 →