赵紫盈,刘金旭,张鸿雁,郭文启,李树奎.低W-W连接度65W-25Cu-10Ni合金的制备及准静态力学性能研究[J].稀有金属材料与工程,2016,45(1):182~186.[Zhao Ziying,Liu Jinxu,Zhang Hongyan,Guo Wenqi,Li Shukui.Study on Preparation and Quasistatic Mechanical Properties of 65W-25Cu-10Ni Alloy with Low W-W Contiguity[J].Rare Metal Materials and Engineering,2016,45(1):182~186.]
低W-W连接度65W-25Cu-10Ni合金的制备及准静态力学性能研究
投稿时间:2014-01-14  修订日期:2014-02-25
中文关键词:  65W-25Cu-10Ni合金  准静态力学性能  化学镀Ni  SPS  W-W连接度
基金项目:国家自然科学基金项目(面上项目,重点项目,重大项目)
中文摘要:
      利用W颗粒表面化学镀Ni结合SPS的方法,制备了低W-W连接度65W-25Cu-10Ni合金,并开展了准静态力学性能研究。结果表明,制得的Ni包W复合粉中Ni包覆层分布均匀且与W结合良好;以Ni包W复合粉和Cu粉为原料制备的65W-25Cu-10Ni合金组织均匀且致密。在准静态压缩加载条件下,与65W-35Cu合金相比,65W-25Cu-10Ni合金的强度及塑性均大幅度提高;在准静态拉伸加载条件下,与65W-35Cu合金相比,65W-25Cu-10Ni合金的强度较高,塑性没有明显提高。机理分析表明,与65W-35Cu合金相比,65W-25Cu-10Ni合金中W-W连接度较低、粘结相由Cu相转变为Cu0.81Ni0.19固溶体,且W与粘结相之间形成了冶金结合,以上三个因素共同导致65W-25Cu-10Ni合金强度的提高;此外,W-W连接度的降低以及W-粘结相界面结合强度的提高是65W-25Cu-10Ni合金在准静态压缩加载条件下塑性提高的原因。
Study on Preparation and Quasistatic Mechanical Properties of 65W-25Cu-10Ni Alloy with Low W-W Contiguity
英文关键词:65W-25Cu-10Ni alloy  quasistatic mechanical properties  Ni electroless plating  SPS  W-W contiguity
英文摘要:
      In the present research, W particles were coated using Ni electroless plating technique, and the Ni coated W powders were mixed uniformly with copper powders. 65W-25Cu-10Ni alloy with low W-W contiguity was successfully prepared by SPS method using the composite powders, and the quasistatic mechanical properties were studied. The results show that, after the Ni electroless plating process, Ni is uniformly distributed on the surface of W particles, and the integrating force is strong. The 65W-25Cu-10Ni alloy prepared by SPS method is uniform and dense in microstructure. Compared with 65W-35Cu alloy, 65W-25Cu-10Ni alloy exhibits higher strength and better ductility under quasistatic compression condition, and exhibits higher strength under quasistatic tensile condition, but the ductility under quasistatic tensile condition is not obviously improved. The analysis of the failure mechanism shows that, compared with 65W-35Cu alloy, W-W contiguity is evidently decreased in the 65W-25Cu-10Ni alloy, the matrix is replaced by Cu0.81Ni0.19 solid solution, and metallurgical bonding is formed between W and the matrix, all these above are benefit to increase the strength of 65W-25Cu-10Ni alloy. Meanwhile, the decrease of W-W contiguity and the increase of the interfacial strength are account for ductility increase of 65W-25Cu-10Ni alloy under quasistatic compression condition.
作者单位E-mail
赵紫盈 北京理工大学 861341020@qq.com 
刘金旭 北京理工大学 liujinxu@bit.edu.cn 
张鸿雁 北京理工大学  
郭文启 北京理工大学  
李树奎 北京理工大学  
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