Study of deformation and aging behaviors of a hot rolled–quenched Cu–Cr–Zr–Mg–Si alloy during thermomechanical treatments
Study of deformation and aging behaviors of a hot rolled–quenched Cu–Cr–Zr–Mg–Si alloy during thermomechanical treatments
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DOI：
10.1016/j.matdes.2012.03.003
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发表时间：
2012-08
影响因子：
8.4
通讯作者：
Chengdong Xia;Yanlin Jia;Wan Zhang;Kebing Zhang;Qiyi Dong;Gen-ying Xu;Mingpu Wang
中科院分区：
文献类型：
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作者：
Chengdong Xia;Yanlin Jia;Wan Zhang;Kebing Zhang;Qiyi Dong;Gen-ying Xu;Mingpu Wang
采用显微硬度、电阻率和透射电镜研究了Cu-Cr-Zr-Mg-Si合金热轧淬火后的变形和时效行为。时效态合金的电阻率随二次冷变形量的增加几乎呈线性增加，峰时效态合金的电阻率在变形过程中由于出现分辨现象而增加得更快更大。定量分析表明，约0.0385wt.%溶质在70%冷变形后重新溶解到峰值时效合金中。后续时效处理的结果表明，二次时效处理可以消除电性能中的分辨率现象引起的劣化。Cu-Cr-Zr-Mg-Si合金经适当的形变热处理后，可获得高硬度和低电阻率的良好组合。
The deformation and aging behaviors of a hot rolled–quenched Cu–Cr–Zr–Mg–Si alloy were investigated by microhardness and electrical resistivity measurements, and transmission electron microscopy observations. The resistivity of aged alloy increases almost linearly with increasing of the secondary cold deformation reductions, and a faster and larger increase in resistivity of the peak-aged alloy is found during the deformation process due to the occurrence of resolution phenomenon. Quantitative analysis shows that about 0.0385wt.% solutes are re-dissolved into the peak-aged alloy after 70% cold deformation. Results of the following aging treatment show that the deterioration caused by resolution phenomenon in electrical properties can be eliminated by the secondary aging treatment. A good combination of high hardness and low resistivity can be achieved in the Cu–Cr–Zr–Mg–Si alloy after suitable thermomechanical treatments.