TY - GEN
T1 - Effect of prior cold-working on strength and electrical conductivity of Cu-Ti dilute alloy aged in a hydrogen atmosphere
AU - Semboshi, Satoshi
AU - Numakura, Hiroshi
AU - Gao, Weilin
AU - Suda, Hisashi
AU - Sugawara, Akira
PY - 2010
Y1 - 2010
N2 - Aging solution-treated Cu-Ti alloys in a hydrogen atmosphere significantly improved their electrical conductivity without degradation of the mechanical strength, compared to conventionally aged alloys. In this study, the influence of prior deformation on the mechanical and electrical properties of Cu-4.2 at.% Ti alloys aged in a hydrogen atmosphere was examined. The Vickers hardness of the solution-treated specimen increased from 127 kgf/mm2 to 265 kgf/mm2 by aging at 673 K for 180 h in a hydrogen atmosphere of 0.8 MPa, while that of the deformed specimen achieved a maximum of approximately 280 kgf/mm2 by aging for 100 h in the same atmosphere. Prior deformation resulted in a more rapid increase in conductivity during aging than that without deformation. The conductivity at the peak-hardness of the deformed specimen was 22% IACS (International Annealed Copper Standard), which exceeded that for the solution-treated specimen. Thus, prior deformation assisted in a significant improvement of the mechanical and electrical properties during aging in a hydrogen atmosphere.
AB - Aging solution-treated Cu-Ti alloys in a hydrogen atmosphere significantly improved their electrical conductivity without degradation of the mechanical strength, compared to conventionally aged alloys. In this study, the influence of prior deformation on the mechanical and electrical properties of Cu-4.2 at.% Ti alloys aged in a hydrogen atmosphere was examined. The Vickers hardness of the solution-treated specimen increased from 127 kgf/mm2 to 265 kgf/mm2 by aging at 673 K for 180 h in a hydrogen atmosphere of 0.8 MPa, while that of the deformed specimen achieved a maximum of approximately 280 kgf/mm2 by aging for 100 h in the same atmosphere. Prior deformation resulted in a more rapid increase in conductivity during aging than that without deformation. The conductivity at the peak-hardness of the deformed specimen was 22% IACS (International Annealed Copper Standard), which exceeded that for the solution-treated specimen. Thus, prior deformation assisted in a significant improvement of the mechanical and electrical properties during aging in a hydrogen atmosphere.
KW - Aging
KW - Cu alloy
KW - Electrical conductivity
KW - Hydrogen
KW - Precipitation hardening
KW - Strain
UR - http://www.scopus.com/inward/record.url?scp=77955476114&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77955476114&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/MSF.654-656.1315
DO - 10.4028/www.scientific.net/MSF.654-656.1315
M3 - Conference contribution
AN - SCOPUS:77955476114
SN - 0878492550
SN - 9780878492558
T3 - Materials Science Forum
SP - 1315
EP - 1318
BT - PRICM7
PB - Trans Tech Publications Ltd
T2 - 7th Pacific Rim International Conference on Advanced Materials and Processing, PRICM-7
Y2 - 2 August 2010 through 6 August 2010
ER -