Optimization of strength, ductility and electrical conductivity of Cu-Cr-Zr alloy by combining multi-route ECAP and aging
Küçük Resim Yok
Tarih
2016
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier Ltd
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Properties of Cu-Cr-Zr alloy with ultrafine-grained (UFG) structure produced by equal-channel angular pressing (ECAP) via different routes have been investigated. Special attention was paid to the optimization of multi-functional structural, thermal, electrical and mechanical properties of the alloy by aging of UFG one. Multi-pass ECAP via different routes gives rise to the formation of a deformation-induced submicrocrystalline structure with the grain (subgrain) sizes in the range of 200-300. nm depending on applied routes which leads to high hardness and strength in the Cu-Cr-Zr alloy with reduced ductility. Amongst the applied routes, route-Bc was found to be the best processing path for achieving the lowest grain size, the highest hardness and strength. Aging of 8Bc-processed UFG samples increases the hardness and strength of Cu-Cr-Zr alloy while retaining an electrical conductivity comparable to that of aged coarse-grained (CG) one. A satisfactory electrical conductivity of 71%IACS without considerable loss of peak hardness was achieved after aging of 8Bc-processed UFG alloy at 425. °C for 240. min. The precipitation strengthened UFG alloy remains its stable behavior at elevated temperatures up to 450. °C. © 2015 Elsevier B.V.
Açıklama
Anahtar Kelimeler
Aging, Copper alloys, Equal-channel angular pressing, Mechanical properties, Aging of materials, Copper alloys, Ductility, Electric conductivity, Grain size and shape, Hardness, Mechanical properties, Precipitation (chemical), Pressing (forming), Zirconium alloys, Cu-Cr-Zr alloys, Electrical and mechanical properties, Electrical conductivity, Elevated temperature, Multi-functional, Processing paths, Submicrocrystalline structures, Ultrafine grained structure, Equal channel angular pressing, Aging, Copper alloys, Equal-channel angular pressing, Mechanical properties, Aging of materials, Copper alloys, Ductility, Electric conductivity, Grain size and shape, Hardness, Mechanical properties, Precipitation (chemical), Pressing (forming), Zirconium alloys, Cu-Cr-Zr alloys, Electrical and mechanical properties, Electrical conductivity, Elevated temperature, Multi-functional, Processing paths, Submicrocrystalline structures, Ultrafine grained structure, Equal channel angular pressing
Kaynak
Materials Science and Engineering A
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
649
