Copper-silicon-magnesium alloys for latent heat storage

Journal Article · Tue Jun 21 00:00:00 EDT 2016 · Metallurgical and Materials Transactions. E, Materials for Energy Systems

DOI:https://doi.org/10.1007/s40553-016-0089-6· OSTI ID:1259676

Gibbs, P. J. ^[1]; Withey, E. A. ^[1]; Coker, E. N. ^[2]; Kruizenga, A. M. ^[1]; Andraka, C. E. ^[2]

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1. Sandia National Lab. (SNL-CA), Livermore, CA (United States)
2. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

The systematic development of microstructure, solidification characteristics, and heat of solidification with composition in copper-silicon-magnesium alloys for thermal energy storage is presented. Differential scanning calorimetry was used to relate the thermal characteristics to microstructural development in the investigated alloys and clarifies the location of one of the terminal three-phase eutectics. Repeated thermal cycling highlights the thermal storage stability of the transformation through multiple melting events. In conclusion, two near-terminal eutectic alloys display high enthalpies of solidification, relatively narrow melting ranges, and stable transformation hysteresis behaviors suited to thermal energy storage.

• Research Organization: Sandia National Lab. (SNL-CA), Livermore, CA (United States); Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA)
• Grant/Contract Number: AC04-94AL85000
• OSTI ID: 1259676
• Report Number(s): SAND-2016-3337J; PII: 89
• Journal Information: Metallurgical and Materials Transactions. E, Materials for Energy Systems, Journal Name: Metallurgical and Materials Transactions. E, Materials for Energy Systems; ISSN 2196-2936
• Publisher: ASM International
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE