Structural change due to martensite aging of CuZnAlMnNi shape memory alloy

Bai, Yilong; Xu, Xinyan; Liu, Yuxian; Xiao, Limei; Geng, Gui-Li

doi:10.1016/s0921-5093(01)01761-0

Cited by 4 publications

(1 citation statement)

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“…Studies pertaining to shape memory effect and its dependency on martensitic transformation (MT) in copperbased alloys have captivated the attention of researchers over the years. [1][2][3][4][5] The kinetics and thermodynamics of MT, that the alloys have undergone, are very much sensitive to its thermo-mechanical treatment. 6 In Cu-Al-Ni alloy system, three equilibrium phases (α, NiAl and γ 2 ) and a disordered BCC parent phase (A2), also called β austenite, can be observed at high temperatures.…”

Section: Introductionmentioning

confidence: 99%

Influence of quenching methods on martensitic transformation and mechanical properties of P/M processed Cu–Al–Ni–Ti shape memory alloys

et al. 2016

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The effect of quenching conditions on phase transformation characteristics and microstructural features of Cu-Al-Ni-Ti shape memory alloys (SMAs) have been studied. The alloys were synthesised via conventional powder metallurgy process using elemental metal powders. Four different quenching techniques, such as (a) two-step quenching, first to 100°C and then to 0°C; (b) two-step quenching, initially to 40°C and later to 0°C; (c) direct quenching to 40°C and (d) direct quenching to 0°C, were used. The microstructural features and phase transformations that the alloys had undergone were studied using FE-SEM and XRD techniques. The martensitic phase transformation analyses were carried out by differential scanning calorimeter while the mechanical properties were studied by microhardness and flexural bending tests. The results obtained clearly indicate that the quenching routes followed have a remarkable influence on the properties of Cu-based SMAs.

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