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Microstructure and properties of Cu-Ni-Si-Zr alloy after thermomechanical treatments
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Microstructure and properties of Cu-Ni-Si-Zr alloy after thermomechanical treatments
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Journal Article
Microstructure and properties of Cu-Ni-Si-Zr alloy after thermomechanical treatments
2013
Overview
The effect of thermomechanical treatments on the microstructures and properties of Cu-2.1Ni-0.5Si- 0.2Zr alloy was investigated. The hot-rolled plates were solution treated at 920 ℃ for 1.5 h, quenched into water, cold rolled by 70 % reduction in thickness, and then aged at 400, 450 and 500 ℃for various times. The variation in tensile strength and electrical conductivity of the alloy was measured as a function of the aging time. The results show the peak strength value of 665 MPa for the alloy aged at 450 ℃ for 2 h. However, the electrical conductivity is observed to reach a maximum of 47 % IACS aged at 450℃for 8 h. OM, SEM, and TEM were used for microstructural inspection of the alloy. Precipitation occurs preferentially at deformation bands in the cold-rolled alloy. Properties behavior is discussed in the light of microstructural features.
Publisher
Nonferrous Metals Society of China,Springer Nature B.V,State Key Laboratory for Fabrication and Processing of Non-ferrous Metals, General Research Institute for Nonferrous Metals, Beijing 100088, China%Aluminum Corporation of China Limited Luoyang Copper Co.,Ltd., Luoyang 471039, China
Subject
/ Chemistry and Materials Science
/ COPPER ALLOYS (40 TO 99.3 CU)
/ Energy
/ IACS
/ Nanoscale Science and Technology
/ ROLLING
/ 光学显微镜
/ 合金
/ 形变热处理
/ 微观结构特征
/ 拉伸强度
/ 组织和性能
/ 老化时间
