Influence of aluminum and manganese concentration on the shape memory characteristics of Cu–Al–Mn shape memory alloys

Mallik, U.S.; Sampath, V.

doi:10.1016/j.jallcom.2007.04.254

Cited by 99 publications

(46 citation statements)

References 9 publications

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“…The changes on the transformation temperatures are attributed to the relative stability of the product phase and closely related to the corresponding thermodynamic properties such as enthalpy. These results are in agreement with the observation made by previous works [13,14]. Differential scanning calorimetry curves of the alloy samples for both forward and reverse transformations are presented in Fig.…”

Section: Resultssupporting

confidence: 93%

Effect of Deformation on the Transformation Temperatures of Martensite and Bainite Structures in Cu-9.97%Al-4.62%Mn Alloy

Aldırmaz

2016

Acta Phys. Pol. A

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At present study of Cu-9.97%Al-4.62%Mn alloy system is used. Some physical properties of martensitic and bainite phase transformatios in Cu-9.97%Al-4.62%Mn (wt%) alloy were investigated by means of scanning electron microscopy and differential scanning calorimetry. In scanning electron microscope observations of Cu-9.97%Al-4.62%Mn alloy were noted two kinds of martensitic phases. These phases were defined as β 1 (M18R) and γ 1 (2H) martensites structures. According to differential scanning calorimetry measurement results, the deformation induced temperature is expected to be higher than the thermally induced temperature in Cu-9.97%Al-4.62%Mn alloy for martensite and bainite structures.

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Section: Resultssupporting

confidence: 93%

Effect of Deformation on the Transformation Temperatures of Martensite and Bainite Structures in Cu-9.97%Al-4.62%Mn Alloy

Aldırmaz

2016

Acta Phys. Pol. A

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“…1 and 1 -exist in the intermediate concentration range [4]. Manganese addition to binary Cu-Al alloys has been found to stabilize the BCC phase, i.e.…”

Section: Introductionmentioning

confidence: 99%

Influence of minor additions of boron and zirconium on shape memory properties and grain refinement of a Cu-Al-Mn shape memory alloy

Sampath

Mallik

2009

ESOMAT 2009 - 8th European Symposium on Martensitic Transformations

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Abstract. Cu-base alloys with 12.5 wt. % Al and 5 wt. % Mn with different amounts (0.05-2.00 wt.%) of boron or zirconium were prepared by ingot metallurgy route. The alloy ingots were homogenized followed by step quenching so as to obtain a structure that is completely martensitic. They were subsequently characterized by optical emission spectrophotometry, differential scanning calorimetry and optical microscopy. The shape memory and superelastic properties of the alloys were studied by bend and tensile test. The present study brings to light that boron acts as a good grain refiner, resulting in a reduction of about 80% in grain size. While it also increases the transformation temperatures by ~ 10 o C, it decreases the strain recovery by shape memory effect by 4%, and that by superelasticity by ~ 2%. A comparison of the results of the alloy with B addition with that with Zr addition reveals that B is a better grain refiner for Cu-Al-Mn SMAs.

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“…From phase diagram [9] pure copper, zinc and nickel were taken in right quantities [ Figure 1(a)] to weigh 500 g of the alloy in total and were melted together in an induction furnace under an inert gas atmosphere [10]. The molten alloy was poured into a cast iron mould of dimensions 150 mm × 100 mm × 3 mm and allowed to solidify.…”

Section: Methodsmentioning

confidence: 99%

“…Currently Cu-ZnAl and Cu-Al-Ni shape memory alloys are commercially available and put to use in many practical applications. The alloys can also be suitably modified to meet specific requirements for practical applications by selectively alloying with suitable quaternary and grain-refining additions [6]. Accordingly quaternary alloyed SMAs such as Cu-Zn-Al-Ni, Cu-Zn-Al-Ni-Mn and Cu-Zn-Ni-Ti-Mn etc.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Shape Memory Effect of Cu-Zn-Ni Shape Memory Alloys

Sathish¹,

Mallik²,

Raju³

2014

JMMCE

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The microstructure, martensitic transformation behavior and shape memory effect of Cu-Zn-Ni shape memory alloy have been studied by X-ray diffraction (XRD), optical microscopy (OM) and differential scanning calorimetry (DSC). The results show that the recrystallization occurs in the hot-rolled Cu-Zn-Ni alloy by annealing at 800˚C and alloy is primarily composed of martensite. A reverse martensite transformation temperature higher than 100˚C upon heating has been detected. The alloys exhibit good ductility and shape memory effect (SME). The results obtained are discussed in detail.

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Influence of aluminum and manganese concentration on the shape memory characteristics of Cu–Al–Mn shape memory alloys

Cited by 99 publications

References 9 publications

Effect of Deformation on the Transformation Temperatures of Martensite and Bainite Structures in Cu-9.97%Al-4.62%Mn Alloy

Effect of Deformation on the Transformation Temperatures of Martensite and Bainite Structures in Cu-9.97%Al-4.62%Mn Alloy

Influence of minor additions of boron and zirconium on shape memory properties and grain refinement of a Cu-Al-Mn shape memory alloy

Microstructure and Shape Memory Effect of Cu-Zn-Ni Shape Memory Alloys

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