Mechanical properties of precipitation strengthening Cu-base alloys highly deformed by ARB process

✍ Scribed by R. Monzen; Y. Takagawa; C Watanabe; D. Terada; N. Tsuji

• Publisher: Elsevier
• Year: 2011
• Tongue: English
• Weight: 578 KB
• Volume: 10
• Category: Article
• ISSN: 1877-7058
• DOI: 10.1016/j.proeng.2011.04.398

✦ Synopsis

The enhancement of strength of Cu-1.2wt%Ni-0.2wt%Be-0.1wt%Zr and Cu-1.4wt%Ni-0.25wt%P-0.1wt%Zr alloys has been tried by the combination of ARB process by 5 cycles and aging treatment at 350 to 450°C. The grain sizes of the alloys, severely deformed by 5-cycle ARB process, were refined down to about 0.4 m. The Cu-Ni-Be-Zr alloy, ARB-processed and peak-aged at 375°C, exhibited a tensile strength u of 810MPa, an elongation t of 9% up to failure and an electrical conductivity of 62%IACS. The Cu-Ni-P-Zr alloy, initially aged at 450°C, then ARBprocessed and peak-aged at 400°C, had the values of u =780MPa, t =6% and 56%IACS.