董亚光,董祥雷,王琮琳,赵红亮.组合时效对高强导电Cu-Ti-Fe-Cr合金箔组织和性能的影响[J].稀有金属材料与工程,2020,49(5):1689~1693.[Yaguang Dong,Xianglei Dong,Conglin Wang,Hongliang Zhao.Microstructure and properties evolution of high-strength conductive Cu-Ti-Fe-Cr alloy foils treated by combined aging process[J].Rare Metal Materials and Engineering,2020,49(5):1689~1693.]
组合时效对高强导电Cu-Ti-Fe-Cr合金箔组织和性能的影响
投稿时间:2019-01-24  修订日期:2019-02-23
中文关键词:  Cu-Ti合金  组合时效  显微组织  导电率
基金项目:国家自然科学基金资助(No.51801186)、国家重点实验室开放课题(No.SKLSP 20814)
中文摘要:
      采用硬度、导电率测试和OM、SEM观察等方法,研究了组合时效对时效强化型Cu-3Ti-0.2Fe-0.2Cr合金箔组织与性能的影响。结果表明,经过900 ℃固溶4 h后水冷+50%初冷轧+450 ℃初时效4 h+95.6%终冷轧+450 ℃再时效1.5 h后,Cu-3Ti-0.2Fe-0.2Cr合金箔的综合性能最优,硬度、抗拉强度、延伸率和导电率分别为354.6 HV、1062 MPa、1.9%和17.1 %IACS,与未经初时效样品的峰时效性能相比,其力学性能相近,但具有更高的导电率,该状态下合金箔的断口形貌为由扁平面、河流状花样和韧窝组成的混合断裂形貌。
Microstructure and properties evolution of high-strength conductive Cu-Ti-Fe-Cr alloy foils treated by combined aging process
英文关键词:Cu-Ti alloy  combined aging process  microstructure  electrical conductivity
英文摘要:
      Effects of combined aging process on microstructure and properties of age-hardenable Cu-3Ti-0.2Fe-0.2Cr alloy foils were investigated by mean of hardness test, tensile test, conductivity test, OM and SEM. It was shown that after the optimized combined aging treatment of pre-rolling with the reduction of 50%, pre-aging at 450 ℃ for 4 h, re-rolling with the reduction of 95.6% and re-aging at 450 ℃ for 1.5 h, the hardness, tensile strength, elongation and electrical conductivity of Cu-3Ti-0.2Fe-0.2Cr alloy foil were 354.6 HV, 1062 MPa, 1.9% and 17.1 %IACS, respectively. Compared with the specimen treated with Pre-0 h+CR+Re-2 h, the alloy foil treated with optimized combined aging process possessed the similar mechanical properties and higher electrical conductivity. The fractograph of the studied alloy foil treated with optimized combined aging process was composed of flat facets resembling cleavage, river pattern and dimples, manifesting a mixed-rupture mode.
作者单位E-mail
董亚光 郑州大学 材料科学与工程学院 dyg35360@163.com 
董祥雷 郑州大学 材料科学与工程学院  
王琮琳 郑州大学 材料科学与工程学院  
赵红亮 郑州大学 材料科学与工程学院 zhlwkr@zzu.edu.cn 
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