Structure · dataset · 2018
Analysis of Compositional Modification of Commercial Aluminum Bronzes to Obtain Functional Shape Memory Properties
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In copper-based shape memory alloys (SMAs), some exceptional phenomena, such as the shape memory effect (SME) or superelasticity (SE), are observable.
Description
However, commercial aluminum bronzes, Cu3Al-based alloys, do not present these functional properties (SME and/or SE) in their original state. Thus, since one of the main copper-based SMA systems is the Cu-Al-Ni alloy, this paper aims to analyze the modification of these commercial aluminum bronzes to SMA by the addition small amounts of Cu, Al and/or Ni.
These modified bronzes were reprocessed by induction melting and injected by centrifugation into a ceramic coating mold. The modifications were made to determine the nominal composition for a Cu-13,0Al-4,0Ni (%wt) SMA. The effectiveness of the modifications was verified by differential scanning calorimetry (DSC) thermal analysis.
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All modified Cu-Al-Ni bronzes presented DSC peaks of the thermoelastic martensitic phase transformation, showing that SMA behavior was achieved, while the non-modified bronzes revealed no transformation. These results were supported by Vickers hardness (HV), X-ray diffraction (XRD), semi quantitative composition by EDS analysis and optical microscopy.
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- Repository landing page scielo.figshare.com/articles/Analysis_of_Compositional_Modification_of_Commercial_… ↗
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- DOI doi.org/10.6084/m9.figshare.6152273.v1 ↗
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- IsSupplementTo 10.1590/1980-5373-mr-2016-1012 doi.org/10.1590/1980-5373-mr-2016-1012 ↗
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Topics
- Stated by source
- Chemical engineering · Materials engineering
- Inferred from text
- Materials engineering 72% · Microscopy 75%
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|---|---|---|---|
| DataCite | 10.6084/m9.figshare.6152273.v1 | 13 d ago | JSON v1 |
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