Microstructure Evolution and Strengthening Mechanism of Cu0.8Cr0.6Zr Alloy during Equal Channel Angular Pressing and Aging Treatment
Microstructure Evolution and Strengthening Mechanism of Cu0.8Cr0.6Zr Alloy during Equal Channel Angular Pressing and Aging Treatment
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Cu0.8Cr0.6Zr合金等通道角挤压时效处理组织演变及强化机制
DOI：
10.1007/s11665-022-07321-2
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发表时间：
2022-09
影响因子：
2.3
通讯作者：
Yutian Ding
中科院分区：
文献类型：
--
作者：
Tingbiao Guo;Yang Gao;Xiaoyang Tai;Junjie Wang;Yutian Ding
研究了Cu-0.8Cr-0.6Zr合金经等通道转角挤压和时效处理后的显微组织、织构演变及其对力学性能和导电性能的影响。用扫描电镜、X射线衍射、电子背散射衍射和透射电镜对变形组织、晶粒取向和析出相进行了分析。测试了合金的力学性能和导电性能。结果表明，ECAP变形后，初始等轴晶逐渐转变为沿挤压方向沿着排列的纤维组织。织构经历了强烈的起伏，由最初的{110}黄铜织构转变为较强的{111}戈斯织构和{111}织构。时效处理后，合金的力学性能和导电性能得到显著提高。在Cu0.8Cr0.6Zr合金固溶+ ECAP + 450 °C时效4 h的综合工艺下，强度和电导率分别达到551.1 MPa和83.3 IACS%。
The microstructure, texture evolution and its effect on the mechanical and electrical conductivity properties of the Cu-0.8Cr-0.6Zr alloy after equal channel angle pressing by route A and aging treatment were investigated. The deformed structure, grain orientation and precipitated phase were detected by scanning electron microscopy, x-ray diffraction, electron backscatter diffraction and transmission electron microscope. The mechanical properties and electrical conductivity of the alloy were tested. The results show that after ECAP deformation the initial equiaxed crystals gradually transform into a fibrous structure arranged along the extrusion direction. The texture undergoes a strong undulation, and the initial {110} brass texture turns into a stronger {111} Goss texture and {111} texture. After aging treatment, the mechanical properties and conductivity of the alloy are significantly improved. Under the comprehensive process of Cu0.8Cr0.6Zr alloy solid solution + ECAP + 450 °C aging for 4 h, the strength and conductivity reached to 551.1 MPa and 83.3 IACS%.
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