Non-equilibrium copper-based crystalline alloy sheet having ultrahigh strength and good electrical conductivity

2011 ◽  
Vol 509 ◽  
pp. S361-S363
Author(s):  
Haruko Miura ◽  
Nobuyuki Nishiyama ◽  
Akihisa Inoue
Keyword(s):  
Electrical Conductivity ◽  
Alloy Sheet ◽  
Ultrahigh Strength ◽  
Crystalline Alloy ◽  
Non Equilibrium

Structure and Mechanical Properties of Severely Deformed Cu-Cr-Zr Alloys Produced by Accumulative Roll-Bonding Process

2008 ◽  
Vol 584-586 ◽  
pp. 791-796 ◽  
Author(s):  
Kazuo Kitagawa ◽  
T. Akita ◽  
K. Kita ◽  
Masahide Gotoh ◽  
Naoki Takata ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Electrical Conductivity ◽  
Ambient Temperature ◽  
Accumulative Roll Bonding ◽  
Aging Treatment ◽  
Alloy Sheet ◽  
Proof Stress ◽  
Roll Bonding ◽  
Fine Grained ◽  
Zr Alloys

Aging behavior and mechanical properties of ultra fine grained Cu-Cr-Zr alloy sheet produced by accumulative roll bonding (ARB) process were investigated. A Cu-0.85Cr-0.07Zr (in mass%) alloy was solution treated and then cold-rolled at ambient temperature in the sheet of 1 mm thick. The sheets were heavily deformed by ARB process at ambient temperature up to 5 cycles. 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 elongation were 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 of the aged one increased to 605 MPa and 15%, respectively. It was noteworthy that the electrical conductivity remarkably increased from 35% to 79%IACS by the aging treatment. It was concluded that the aging treatment after ARB process enhanced not only the mechanical properties but also the electrical conductivity in the Cu-Cr-Zr alloys.

Structure, conductivity and mechanical properties of non-equilibrium copper-based crystalline alloy nano-composites

2010 ◽  
Vol 18 (10) ◽  
pp. 1860-1863 ◽  
Author(s):  
H. Miura ◽  
N. Nishiyama ◽  
N. Togashi ◽  
M. Nishida ◽  
A. Inoue
Keyword(s):  
Mechanical Properties ◽  
Nano Composites ◽  
Crystalline Alloy ◽  
Non Equilibrium
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