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:
The effects of P and Cr addition and two-step aging on the microstructure and mechanicalproperties of a Cu-4wt%Ni-0.95wt%Si alloy have been examined. The addition of 0.02wt%Pimproves both strength and elongation because it suppresses discontinuous precipitation reaction. TheCr addition to the Cu-Ni-Si-P alloy decreases greatly the grain size, resulting in an increase inelongation. Two-step aging, pre-aging at 300 or 350oC and subsequent second-step aging at 450oC,causes an increase in strength without reducing elongation. The increase in strength is attributable tothe decrease in inter-precipitate spacing by the two-step aging. The two-step aged Cu-4wt%Ni-0.95wt%Si-0.02wt%P-0.02wt%Cr alloy attains a tensile strength of 830MPa, an elongation of 13%and an electrical conductivity of 35%IACS
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/18/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.561-565.2321.pdf
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