ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Aging behavior and mechanical properties of ultra fine grained Cu-Cr-Zr alloy sheetproduced by accumulative roll bonding (ARB) process were investigated. A Cu-0.85Cr-0.07Zr (inmass%) alloy was solution treated and then cold-rolled at ambient temperature in the sheet of 1 mmthick. The sheets were heavily deformed by ARB process at ambient temperature up to 5cycles. The grain size was reduced down to 210 nm and the fraction of high angle grain boundaries(HAGB’s) in the specimen after ARB process was 63%. The proof stress ( σ 0.2) and elongationwere 540 MPa and 10%, respectively. Due to the aging treatment, a little grain growth took place(240 nm) and the fraction of HAGB’s was increased to 67%. The proof stress and elongation ofthe aged one increased to 605 MPa and 15%, respectively. It was noteworthy that the electricalconductivity remarkably increased from 35% to 79%IACS by the aging treatment. It wasconcluded that the aging treatment after ARB process enhanced not only the mechanical propertiesbut also the electrical conductivity in the Cu-Cr-Zr alloys
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/19/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.584-586.791.pdf
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