Abstract
The effects of B addition on the magnetization, mechanical and shape memory properties in Cu70−x Al24Mn6B x at.% (x = 0, 1, 2, 3, 4) alloys have been investigated. The ductility was decreased, while the strength was improved with B addition. Transformation temperatures were increased with B content due to increased e/a ratio. Martensite start temperature of B-free CuAlMn was found to be 37.3 °C and increased to 218.8 °C with 4 % B addition. B-free CuAlMn exhibited shape memory effect with a recoverable strain of 2.25 % under 200 MPa and a perfect superelasticity with a recoverable strain of 2.5 % at 163 °C. B addition degraded the shape memory properties and eventually resulted in the lack of recoverable strain. In addition, saturation magnetization was increased with B content. Moreover, the addition of B slightly decreased the ductility of the alloy. It was found that the magnetization, mechanical and shape memory properties CuAlMn alloys can be tailored by quaternary alloying with B.
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This work is supported by TUBITAK under Project No. 113F234 and National Science Foundation (NSF) CMMI Award #0954541.
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Aydogdu, Y., Turabi, A.S., Aydogdu, A. et al. The effects of substituting B for Cu on the magnetic and shape memory properties of CuAlMnB alloys. Appl. Phys. A 122, 687 (2016). https://doi.org/10.1007/s00339-016-0222-5
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DOI: https://doi.org/10.1007/s00339-016-0222-5