Studies on thermal stability, mechanical and electrical properties of nano crystalline Cu(99.5)Zr(0.5) alloy

Cryogenic high energy ball milling was used to synthesize nanocrystalline Cu and Cu(99.5)Zr(0.5) alloys by mechanical alloying and consolidation by hot pressing at 550 degree C temperature. The grain size stability of nanocrystalline Cu is improved by the Zr addition. Microstructural characterizatio...

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Bibliographic Details
Published inJournal of alloys and compounds Vol. 558; pp. 44 - 49
Main Authors Roy, Debdas, Atwater, Mark A, Youssef, Khaled, Ledford, John Christopher, Scattergood, Ronald O, Koch, Carl C
Format Journal Article
LanguageEnglish
Published 05.05.2013
Subjects
Ball milling
BALL MILLS
Copper
COPPER ALLOYS (40 TO 99.3 CU)
Copper base alloys
Diffraction
ELECTRICAL CONDUCTIVITY
ELECTRICAL PROPERTIES
HARDNESS
Hot pressing
Nanocrystals
Shear strength
SOLID SOLUTIONS
THERMAL STABILITY
ZIRCONIUM COPPERS
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Summary:Cryogenic high energy ball milling was used to synthesize nanocrystalline Cu and Cu(99.5)Zr(0.5) alloys by mechanical alloying and consolidation by hot pressing at 550 degree C temperature. The grain size stability of nanocrystalline Cu is improved by the Zr addition. Microstructural characterization using X-ray diffraction and transmission electron microscopy provided evidence for the formation of a Cu-Zr alloy solid solution with nanocrystalline size after hot pressing. The alloy exhibited a higher hardness (3.31 GPa), and shear strength (550 MPa) than nano-crystalline pure Cu however, the electrical resistivity is increased in the alloy.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
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ISSN:0925-8388