Effect of Heat treatment on microstructure and properties of Cu-Ni-Co-Si alloy

2nd International Conference on Mechanical Engineering and Applied Composite Materials

机械制造;材料工程

Peng, Lijun^1^2 ; Ma, Jimiao^1 ; Liu, Xingyu^2 ; Liu, Feng^1 ; Huang, Guojie^2 ; Hong, Songbai^1 ; Xie, Haofeng^2 ; Yang, Zhen^2

NingBo XingYe Sheng Tai Group Co. Ltd, Provincial Enterprise Technology Center, NingBo, Zhejiang

315336, China^1

State Key Laboratory of Nonferrous Metals and Process, General Research Institute for Nonferrous Metals Engineering Institute, Beijing

101400, China^2

关键词: Aging treatment;    Co-Si alloy;    Comprehensive properties;    Effect of heat treatments;    Microstructure and properties;    Orientation relationship;    Second phase;    Solution treatments;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/544/1/012030/pdf
DOI  :  10.1088/1757-899X/544/1/012030

来源: IOP

【 摘 要 】

In the paper, the effect of different solution and aging treatment on microstructure and properties of Cu-Ni-Co-Si alloy is investigated in detail. The results show that the recrystallization, grain growth and second phase solubilization are observed during the continuous solution treatment on line of Cu-Ni-Co-Si alloy. When the Cu-Ni-Co-Si alloy is solutioned at 970 °C and speed of annealing is 10 m/min, aged at 500 °C for 8 h, 40 % cold roll and aged at 325 C for 12 h, it has the excellent comprehensive properties, which can meet the needs of high-end lead frame and connectors. The Disk-shaped precipitates have been confirmed as (Ni, Co)2Si phase. The crystal orientation relationship between matrix and precipitates is (221)P||(200)Cu[102]P||[001]Cu.