材料科学
微观结构
合金
衍射仪
电子背散射衍射
扫描电子显微镜
透射电子显微镜
相(物质)
冶金
降水
电阻率和电导率
结晶学
复合材料
纳米技术
化学
电气工程
物理
工程类
气象学
有机化学
作者
Lei Jia,Xianhui Wang,Ran Qianni,Yanfeng Liu,Cong Li
出处
期刊:Rare Metal Materials and Engineering
[Elsevier]
日期:2018-07-01
卷期号:47 (7): 1980-1985
被引量:7
标识
DOI:10.1016/s1875-5372(18)30168-1
摘要
The effect of cold deformation and aging on the microstructure and properties of Cu-3Ti-2Mg alloy was investigated. The microstructure and phase constituents were characterized by optical microscope (OM), scanning electron microscope (SEM), X-ray diffractometer (XRD), transmission electron microscope (TEM) and electron backscattering diffraction (EBSD), and the hardness and electrical conductivity were measured as well. The results show that the microstructure of as-cast Cu-3Ti-2Mg alloy consists of Cu2Mg phase, plate-like Cu4Ti phase and Cu matrix. The microstructural characterizations reveal that the βprime;-Cu4Ti phase precipitates from the supersaturated Cu matrix during aging. However, excessive aging causes the phase transformation from metastable, coherent βprime;-Cu4Ti to equilibrium, incoherent Cu3Ti phases. In the range of experiments, the optimum process for Cu-3Ti-2Mg alloy is solutizing at 700 °C for 4 h, cold deformation of 60%, and aging at 450 °C for 2 h. The electrical conductivity and hardness HV of Cu-3Ti-2Mg alloy are 16.7 %IACS and 3280 MPa, respectively.
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