Fabrication of the casting products in Cu-Zn-Mn-Ni Medium-Entropy Brasses

Takeshi Nagase, Akihiro Shibata, Mitsuaki Matsumuro, Mamoru Takemura, Satoshi Semboshi

Research output: Contribution to journalArticlepeer-review

Abstract

The ingots of CuxZnMnNi (x = 1,2) medium-entropy (ME) brasses were fabricated using metallic mold-casting process without a vacuum chamber. The molten metal was obtained by high-frequency melting of the mixture of pure Cu, pure Ni, and pre-alloy ingots of Mn-Cu and Zn-Ni using silica-based crucible in Ar flow. The metallic mold-casting ingots were obtained using centrifugal casting in air atmosphere. The composite of body-centered-cubic (BCC) and face-centered-cubic (FCC) phases were obtained in the ingots of equiatomic CuZnMnNi ME brass, while a near-single FCC phase was obtained in the ingots of non-equiatomic Cu2ZnMnNi ME brass, where the identification of the constituent phases was mainly performed by XRD analysis. The ingots showed superior deformability and high 0.2% proof stress during compression test conducted at room temperature.

Original languageEnglish
Pages (from-to)856-863
Number of pages8
JournalMaterials Transactions
Volume62
Issue number6
DOIs
Publication statusPublished - 2021

Keywords

  • Brass
  • Casting
  • Medium-entropy alloy
  • Microstructure
  • Solidification

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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