The refinement treatment of martensite in Cu–11.38wt.%Al–0.43wt.%Be shape memory alloys

Hsu, Cheng-An; Wang, W.H.; Hsu, Yung−Fu; Rehbach, Werner P.

doi:10.1016/j.jallcom.2008.06.109

Cited by 31 publications

(7 citation statements)

References 17 publications

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“…For the studied b Cu-22.60Al-3.26Be (at%) alloy, and during isothermal treatments in the eutectoid field, the first precipitated phase formed is a. A similar behaviour has been reported for the Cu-22.71Al-2.57Be (at%) alloy [19]. However, other authors have reported the formation of g 2 phase as the first precipitate in Cu-22.72Al-3.55Be (at%) [7] and Cu-22Al-3Be (at%) [6] alloys.…”

Section: Discussionsupporting

confidence: 77%

Kinetics of isothermal decomposition in polycrystalline β CuAlBe alloys

2010

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Section: Discussionsupporting

confidence: 77%

Kinetics of isothermal decomposition in polycrystalline β CuAlBe alloys

2010

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“…Past two decades, the pseudoelastic behavior of β-type Ni-Ti-and Cu-Al-based SMAs have been extensively studied for vibration mitigation [4][5][6][7][8][9]. Among these, Cu-Al-based SMAs are preferred in seismic applications as an economical alternative to Ni-Ti-based SMAs, because of their low cost, ease of production, and processing [10][11][12]. However, the applications are restricted to real-time because of poor mechanical properties and intergranular fracture due to very coarse grain size [13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of the pseudoelastic behavior on zirconium modified Cu–Al–Be shape memory alloys for seismic applications

Kalinga¹,

SM²,

Kattimani³

2022

Smart Mater. Struct.

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This paper examines the effect of 0.05-0.3 wt.% of zirconium-doping on microstructure, transformation temperatures, tensile properties, and pseudoelastic behavior of the parent β1-phase Cu87.93-Al11.5-Be0.57 shape memory alloys (SMAs). Results reveal that alloying zirconium in the evaluated SMA samples exhibits an excellent grain refinement up to 0.15 wt.%. Further, higher additions of Zr ≥ 0.2 wt.% lowers the grain refinement efficiency due to precipitates agglomeration. Larger the size and volume fraction of Al3Zr precipitates led to higher transformation temperatures. Tensile properties were improved with Zr-doping, resulting enhancements in the maximum tensile strength and ductility with the addition of 0.15 wt.% Zr. The alloy with 0.05 wt.% of Zr-dope showed a good pseudoelastic strain recovery of deformation strain and then lowered by retaining large residual strain, indicating deterioration in the pseudoelasticity of SMAs.

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“…Thermomechanical processing determines the final microstructure of the alloy (grain size and morphology, texture, precipitates, etc.) and has, therefore, a direct impact on its pseudoelastic properties [28]. Grain size is one of the most important microstructural Contents lists available at ScienceDirect journal homepage: www.elsevier.com/locate/msea parameters which play a role in the mechanical properties of shapememory alloys, and it is directly related to the spatial distribution of grain boundaries [29].…”

Section: Introductionmentioning

confidence: 99%