Mechanical alloying of high-strength copper alloys containing TiB[sub 2] and Al[sub 2]O[sub 3] dispersoid particles

Journal Article · Sun May 15 00:00:00 EDT 1994 · Scripta Metallurgica et Materialia; (United States)

DOI:https://doi.org/10.1016/0956-716X(94)90267-4· OSTI ID:7303044

Biselli, C ^[1]; Morris, D G; Randall, N ^[2]

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1. Univ. of Neuchatel (Switzerland). Inst. of Structural Metallurgy Swissmetal Research Lab., Neuchatel (Switzerland)
2. Univ. of Neuchatel (Switzerland). Inst. of Structural Metallurgy

Considerable effort is being devoted to the development of high strength, high conductivity copper alloys both for applications in electronics as well as in aerospace, where the ability to remove heat and to retain a sufficient strength is of critical importance. Examples of such alloys are Cu-Cr-Zr and Cu-Ni-Sn alloys prepared by rapid solidification and by Osprey processing, in situ fabricated fiber-reinforced Cu-Cr, Fe, or Nb composites and mechanically alloyed Cu-bcc metal mixtures. The previously-examined mechanically alloyed materials showed good strength after consolidation of the milled powders but showed signs of structural instabilities at high temperatures due to coarsening of the dispersed bcc metal particles. The present study examined alloys prepared by milling and consolidating mixtures of copper with other elements which will produce stable compound phases (TiB[sub 2] and Al[sub 2]O[sub 3]) either during milling or during subsequent annealing. Such dispersed particles should be more resistant to coarsening than the earlier bcc metal particles and should lead to improved strength and stability after high temperature treatments.

• OSTI ID: 7303044
• Journal Information: Scripta Metallurgica et Materialia; (United States), Vol. 30:10; ISSN 0956-716X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM OXIDES
FABRICATION
MECHANICAL PROPERTIES
COPPER ALLOYS
TITANIUM BORIDES
COMPOSITE MATERIALS
DISPERSIONS
EXPERIMENTAL DATA
MICROSTRUCTURE
TRANSMISSION ELECTRON MICROSCOPY
ALLOYS
ALUMINIUM COMPOUNDS
BORIDES
BORON COMPOUNDS
CHALCOGENIDES
DATA
ELECTRON MICROSCOPY
INFORMATION
MATERIALS
MICROSCOPY
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
360601* - Other Materials- Preparation & Manufacture
360603 - Materials- Properties