Liu Jia, Wang Xianhui, Ran Qianni, Liu Yanfeng, Li Cong
{"title":"Cu-3Ti-2Mg合金的预变形与时效特性","authors":"Liu Jia, Wang Xianhui, Ran Qianni, Liu Yanfeng, Li Cong","doi":"10.1016/S1875-5372(18)30168-1","DOIUrl":null,"url":null,"abstract":"<div><p>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 Cu<sub>2</sub>Mg phase, plate-like Cu<sub>4</sub>Ti phase and Cu matrix. The microstructural characterizations reveal that the <em>βprime;</em>-Cu<sub>4</sub>Ti phase precipitates from the supersaturated Cu matrix during aging. However, excessive aging causes the phase transformation from metastable, coherent <em>βprime;</em>-Cu<sub>4</sub>Ti to equilibrium, incoherent Cu<sub>3</sub>Ti 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.</p></div>","PeriodicalId":21056,"journal":{"name":"稀有金属材料与工程","volume":"47 7","pages":"Pages 1980-1985"},"PeriodicalIF":0.6000,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1875-5372(18)30168-1","citationCount":"4","resultStr":"{\"title\":\"Pre-deformation and Aging Characteristics of Cu-3Ti-2Mg Alloy\",\"authors\":\"Liu Jia, Wang Xianhui, Ran Qianni, Liu Yanfeng, Li Cong\",\"doi\":\"10.1016/S1875-5372(18)30168-1\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>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 Cu<sub>2</sub>Mg phase, plate-like Cu<sub>4</sub>Ti phase and Cu matrix. The microstructural characterizations reveal that the <em>βprime;</em>-Cu<sub>4</sub>Ti phase precipitates from the supersaturated Cu matrix during aging. However, excessive aging causes the phase transformation from metastable, coherent <em>βprime;</em>-Cu<sub>4</sub>Ti to equilibrium, incoherent Cu<sub>3</sub>Ti 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.</p></div>\",\"PeriodicalId\":21056,\"journal\":{\"name\":\"稀有金属材料与工程\",\"volume\":\"47 7\",\"pages\":\"Pages 1980-1985\"},\"PeriodicalIF\":0.6000,\"publicationDate\":\"2018-07-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/S1875-5372(18)30168-1\",\"citationCount\":\"4\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"稀有金属材料与工程\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1875537218301681\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"稀有金属材料与工程","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1875537218301681","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Pre-deformation and Aging Characteristics of Cu-3Ti-2Mg Alloy
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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