Thermomechanical behavior of a CuAlBe shape memory alloy

Montecinos, S.; Cuniberti, A.

doi:10.1016/j.jallcom.2007.03.077

Cited by 41 publications

(43 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This relationship has been also reported in martensitic CuAl [18] and CuZnAl alloys [19]. In CuAlBe and CuZnAl alloys, the largest transformation strain is obtained in well-oriented single [11,20]. We have performed detailed studies about the thermomechanical and pseudoelastic behavior product of the martensitic transformation induced by tensile and compressive tests of CuAlBe polycrystals [5,10,11,16,21].…”

Section: Introductionsupporting

confidence: 64%

“…The critical temperature as well as the critical stress for the martensitic transformation start is strongly dependent on the chemical composition. The martensitic transformation is also affected by the microstructural state, particularly by the presence of lattice defects [6][7][8][9], and the grain size plays an important role in polycrystalline specimens [10][11][12][13][14][15]. Large grains require higher values of strain associated to the transformation.…”

Section: Introductionmentioning

confidence: 99%

“…In CuAlBe and CuZnAl alloys, the largest transformation strain is obtained in well-oriented single [11,20]. We have performed detailed studies about the thermomechanical and pseudoelastic behavior product of the martensitic transformation induced by tensile and compressive tests of CuAlBe polycrystals [5,10,11,16,21]. The recoverable pseudoelastic strain increases and the stress hysteresis decreases as the grain size increases [16,21].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Grain size evolution in Cu-based shape memory alloys

et al. 2015

Self Cite

View full text Add to dashboard Cite

A study of the grain growth kinetics in two shape memory alloys, CuAlBe and CuZnAl, is reported. Isothermal aging treatments at temperatures between 1023 and 1123 K were conducted, determining the grain size distribution as a function of time. The results show that the size distribution can be described by a log-normal type relationship, and is time-invariant. It was found that the arithmetic mean grain size almost coincide with the mode, which means that it is a representative parameter of the microstructure along the annealing time. The growth kinetics is strongly dependent on the aging temperature in CuZnAl, while is weakly in CuAlBe. It was verified that the grain size-time power law usually applied is not appropriate to describe the process, and an early departure from the ideal behavior is observed. The modification with a time-dependent dragging force gives a reasonable approximation to the grain growth kinetic. The obtained results are compared with the scarce data existing on this type of alloys.

show abstract

Section: Introductionsupporting

confidence: 64%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Grain size evolution in Cu-based shape memory alloys

et al. 2015

Self Cite

View full text Add to dashboard Cite

show abstract

“…Cu-(13 wt.%) Al shape memory alloys with addition small amount of beryllium per elastic effect at room temperature, because the martensitic transformation from the austenite phase (β) have BCC crystal structure to marten site phase (18R) have monoclinic crystal structure [1][2][3][4][5][6]. The application of these alloy used as absorb vibration damping effect in bridge and building structure [7].…”

Section: Introductionmentioning

confidence: 99%

Effect of Aging on Corrosion Behavior of Martensite Phase in Cu-Al-Be Shape Memory Alloy

Jt¹,

Am²,

Az³

2017

J Nanomed Nanotechnol

View full text Add to dashboard Cite

“…Following homogenization, the specimen was quenched in water at room temperature (i.e., 293 K) [122]. Further long time aging of 1 or 2 months at 373 K resulted in a more stable M s value (see ''Ambient aging effects in CuAlBe alloys'' section).…”

Section: Introductionmentioning

confidence: 99%

Shape memory alloys as an effective tool to damp oscillations

Torra¹,

Isalgué

Lovey

et al. 2015

J Therm Anal Calorim

View full text Add to dashboard Cite

The SMA was studied for their macroscopic application in damping for civil engineering. The study is a synthesis and includes an outline of the models required for the SMA simulation and some case studies using the finite element analysis methods. This work is an overview that focuses in the mitigation of the oscillations in structures induced by earthquakes, and for a reduction of the oscillations amplitude in stayed cables under the action of rain, wind or traffic. The analysis needs the required conditions for each application determining the working conditions. The study includes the number of working cycles, the temperature effects and the cooling actions and, for instance, the action of the cycling frequency. The main target relates the appropriateness of the SMA for each purpose, and the suitability of the SMA device is always experimentally guaranteed. Furthermore, the applicability of the obtained results for SMA and the practical behavior of the SMA dampers were studied in international facilities. The paper includes appropriate suggestions for a correct preparation of the SMA dampers. This work outlines the effects of stress and temperature aging in NiTi, describes the particular structural effects between 18R and 6R, introduces a first attempt in the dynamic properties of the CuAlBe single crystals and summarizes some recent suggestions for damping using SMA.Keywords Shape memory alloys Á Martensitic transformation Á NiTi Á CuAlBe Á Damping Á Fatigue Part oneThe martensitic transformation (MT) is the origin of the unique properties of shape memory alloys (SMA) [1,2]. MT is a first-order phase transition between metastable phases with hysteresis. The transformation takes place with small displacements of the atoms and without any change in the positions of the neighboring atoms: Atomic order is conserved in the transformation. The transformation can be induced by temperature or by external forces, such as traction or compression. In temperature-induced transformations, M s (martensite start) denotes the starting temperature. The M f (martensite finish) temperature determines the end of the transformation, and A s and A f denote the austenite start and the austenite finish temperatures, respectively. This part was devoted to general contents and properties of the SMA appropriate for damping of oscillations. In particular, reduction of oscillations appeared in civil engineering structures.

show abstract

Thermomechanical behavior of a CuAlBe shape memory alloy

Cited by 41 publications

References 16 publications

Grain size evolution in Cu-based shape memory alloys

Grain size evolution in Cu-based shape memory alloys

Effect of Aging on Corrosion Behavior of Martensite Phase in Cu-Al-Be Shape Memory Alloy

Shape memory alloys as an effective tool to damp oscillations

Contact Info

Product

Resources

About