MRS Advances

C. Martínez, F. Briones, P. Rojas, S. Ordoñez, C. Aguilar, D. Guzmán

Research output: Contribution to conferencePaper

7 Citations (Scopus)

Abstract

Copyright © Materials Research Society 2017. Elemental powders of Cu and Ni, binary alloys (Cu-Ni and Cu-Zr) and ternary alloy (Cu-Ni-Zr) obtained by mechanical alloying and uniaxial compaction hot microstructure and mechanical properties were investigated. The alloys studied were: pure Cu, pure Ni, binary alloys (Cu-Ni; Cu-Zr) and ternary alloys (Cu-Ni-Zr) under the same mechanical milling and hot pressing conditions. The samples were analyzed by X-ray diffraction (XRD), scanning electron microscope (SEM); the mechanical properties were studied by compression tests and hardness in Vickers scale (HV0.5) on polished surfaces at room temperature. According to XRD results, hot pressing process crystallite size increase and microstrain decreases in the compact samples due to the release of crystalline defects. The compacted samples have porosity of approximately 20%. The milling powder samples have a higher hardness than the unmilled samples, this because during milling crystal defects are incorporated together with the microstructural refinement. Ternary alloy is the one with the highest hardness of all systems studied, reaching 689 HV0.5. In compression tests determined a strain 5 %, Zr-containing samples become more fragile presenting the lowest values of compressive strength. In contrast, samples of Ni and Cu-Ni binary alloy are more resistant to compression.
Original languageEnglish
Pages2831-2836
Number of pages6
DOIs
Publication statusPublished - 1 Jan 2017
Eventconference -
Duration: 1 Jan 2017 → …

Conference

Conferenceconference
Period1/01/17 → …

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    Martínez, C., Briones, F., Rojas, P., Ordoñez, S., Aguilar, C., & Guzmán, D. (2017). MRS Advances. 2831-2836. Paper presented at conference, . https://doi.org/10.1557/adv.2017.519