Influence of Thermomechanical Treatments and Chemical Composition on the Phase Transformation of Cu-Al-Mn Shape Memory Alloy Thin Sheets

被引:0
作者
Milosavljevic, Dusan [1 ]
Lecis, Nora [1 ]
Cinquemani, Simone [1 ]
机构
[1] Politecn Milan, Dept Mech Engn, Via Masa 1, I-20156 Milan, Italy
来源
APPLIED SCIENCES-BASEL | 2024年 / 14卷 / 22期
关键词
shape memory alloys; Cu-Al-Mn; phase transformation; thermomechanical treatments; GRAIN-SIZE; THERMOELASTIC MARTENSITE; DAMPING PROPERTIES; PSEUDOELASTICITY; TEXTURE; GROWTH;
D O I
10.3390/app142210406
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
This paper investigates the interrelated effects of thermomechanical treatments and chemical composition on the phase transformation capabilities of thin sheets made from Cu-Al-Mn shape memory alloys. The transformation capacity and transition temperatures were determined using DSC and DMA testing, while composition measurements were performed using SEM/EDX analysis. The results demonstrate that applying hot-rolling treatments to alloys of reduced thickness leads to manganese oxidation and modifications in chemical composition, adversely impacting the phase transformation performance. This effect can be mitigated by the use of cold rolling. Additionally, the presence of phosphorus impurities can create inclusions that bind manganese, preventing it from remaining in the solid solution and further affecting phase transformation capabilities.
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页数:16
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