High Strength and Good Ductility in Cu-3Ag-0.5Zr Alloy by Cryo-Rolling and Aging

被引：10
作者：
Krishna, S. Chenna [1 ]
Chawake, Niraj [2 ]
Kottada, Ravi Sankar [2 ]
Jha, Abhay K. [1 ]
Pant, Bhanu [1 ]
Venkitakrishnan, P. V. [1 ]
机构：
[1] Vikram Sarabhai Space Ctr, Mat & Mech Ent, Trivandrum 695022, Kerala, India
[2] IIT Madras, Dept Met & Mat Engn, Chennai 600036, Tamil Nadu, India
来源：
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE | 2017年 / 26卷 / 01期
关键词：
aging; cryo-rolling; Cu-Ag-Zr alloys; high strength; SEVERE PLASTIC-DEFORMATION; STACKING-FAULT ENERGY; GRAINED CU-ZN; MECHANICAL-PROPERTIES; TENSILE DUCTILITY; ELECTRICAL-CONDUCTIVITY; COLD-WORKING; MICROSTRUCTURE; METALS; COPPER;
D O I：
10.1007/s11665-016-2419-3
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A combination of high strength and good ductility was achieved in a precipitation hardenable Cu-3Ag-0.5Zr alloy through cryo-rolling (80% reduction in thickness) and aging in the temperature range (200-500 A degrees C). The high-strength sheets produced by cryo-rolling showed a threefold increase in yield strength compared to that of the solution-treated and aged (220 MPa) sample, while retaining good ductility. An optimum combination of high strength (614 MPa) and ductility (8%) was achieved by 80% cryo-rolling and aging at 320 A degrees C for 1 h. The high strength and good ductility obtained was attributed to various microstructural factors such as deformation twins, ultra-fine grains, high dislocation density and fine nano-sized silver precipitates.
引用
收藏
页码：350 / 357
页数：8
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