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彭丽军,马吉苗,刘兴宇,刘峰,黄国杰,洪松柏,解浩峰,刘冬梅.不同处理工艺对Cu-Ni-Co-Si合金组织与性能的影响[J].稀有金属材料与工程(英文),2019,48(6):1969~1974.[Peng Lijun,Ma Jimiao,Liu Xingyu,Liu Feng,Huang Guojie,Hong Songbai,Xie Haofeng and Liu Dongmei.Influence of different treatment processes on microstructure and properties of Cu-Ni-Co-Si alloy[J].Rare Metal Materials and Engineering,2019,48(6):1969~1974.]
Influence of different treatment processes on microstructure and properties of Cu-Ni-Co-Si alloy
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Received:September 25, 2017  Revised:January 08, 2018
DOI:
Key words: Cu-Ni-Co-Si alloy  solution and aging treatment  Microstructure  Vickers hardness  Electrical conductivity
Foundation item:国家重点研发计划(项目号:2016YFB0301300),国家自然科学基金(项目号:51601017和51401026))
Author NameAffiliation
Peng Lijun,Ma Jimiao,Liu Xingyu,Liu Feng,Huang Guojie,Hong Songbai,Xie Haofeng and Liu Dongmei  
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Abstract:
      The influence of different treatment processes on microstructure and properties of Cu-Ni-Co-Si alloy were studied by scanning electron microscopy (SEM), transmission electron microscopy (TEM) and high resolution electron microscopy (HRTEM). The physical properties were tested as well. The results show that a large number of (Ni、Co)2Si large phases with orthorhombic structure and few of little (Ni、Co)2Si phase are found in the Cu-Ni-Co-Si alloy when the alloy is quenched on-line and aged treatment, which is ascribed to the low strength of the alloy. The relation curve between Vickers hardness and aging time exhibit a single peak and the electrical conductivity firstly rapid increase, then slowly raise, finally trended to stable as the aging time rise, when the Cu-Ni-Co-Si alloy is treated by solution and aging treatment and solution, cold deformation and aging treatment, respectively. Meanwhile, a lot of disc-shaped (Ni、Co)2Si precipitates with orthorhombic structure are found in the above condition. These precipitates with orientation relationship with Cu matrix could be analyzed as 。