J. Mater. Sci. Technol. ›› 2011, Vol. 27 ›› Issue (7): 653-658.

• Novel Processing and Characterization Methods • 上一篇    下一篇

Joining of zirconia and Ti-6Al-4V using a Ti-based amorphous filler

刘玉华1,胡建东2,3,张亚平2,3,郭作兴4,杨悦2,5   

  1. 1. 吉林大学南岭校区汽车材料教育部重点实验室
    2.
    3. 吉林大学材料科学与工程学院
    4. 吉林大学
    5. 长春工业大学材料学院
  • 收稿日期:2011-02-25 修回日期:2011-03-31 出版日期:2011-07-28 发布日期:2011-07-26
  • 通讯作者: 郭作兴
  • 基金资助:

    吉林省科技厅

Joining of Zirconia and Ti-6Al-4V Using a Ti-based Amorphous Filler

Yuhua Liu1), Jiandong Hu1), Yaping Zhang1), Zuoxing Guo1), Yue Yang2)   

  1. 1) Key Lab. of Automobile Materials, Ministry of Education, College of Materials Science and Engineering, Jilin University, Changchun 130025, China
    2) Key Lab. of Advanced Structural Materials, Ministry of Education, Changchun University of Technology, Changchun 130012, China
  • Received:2011-02-25 Revised:2011-03-31 Online:2011-07-28 Published:2011-07-26
  • Supported by:

    2009 Open Foundation of the Key Lab of Automobile Materials, Jilin University, from Natural Scientific Basic Research Fund for Platform and Base Construction (Grant No. 09-421060352467) and by the Department of Science & Technology of Jilin Province (Grant No. 20100545)

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摘要： Polycrystalline ZrO2?3mol.%Y2O3 was brazed to Ti-6Al-4V using a Ti47Zr28Cu14Ni11 (at.%) amorphous ribbon at 1133?1323 K in a high vacuum. The influences of brazing temperature on the microstructure and shear strength of the joints were investigated. The interfacial microstructures can be described as ZrO2/ TiO+TiO2+Cu2Ti4O+Ni2Ti4O/a-Ti+(Ti,Zr)2(Cu,Ni) eutectic/acicular Widmanst?ten structure/Ti–6Al–4V alloy. With the increase in the brazing temperature, the thickness of the TiO+TiO2+Cu2Ti4O+Ni2Ti4O layer reduced, the content of the a-Ti+(Ti,Zr)2(Cu,Ni) eutectic phase decreased, while that of the coarse a-Ti phase gradually increased. The shear strength of the joints showed a noticeable decreasing tendency with the decrease in the thickness of the TiO+TiO2+Cu2Ti4O+Ni2Ti4O layer. Moreover, when the coarse (Ti,Zr)2(Cu,Ni) phase was non-uniformly distributed in the a-Ti phase, or when a-Ti solely situated at the center of the joint, forming a coarse block or even connecting into a continuous strip, the shear strength greatly decreased.

Abstract: Polycrystalline ZrO2-3 mol.%Y2O3 was brazed to Ti-6Al-4V by using a Ti47Zr28Cu14Ni11(at.%) amorphous ribbon at 1123-1273 K in a high vacuum. The influences of brazing temperature on the microstructure and shear strength of the joints were investigated. The interfacial microstructures can be described as ZrO2/TiO+TiO2+Cu2Ti4O+Ni2Ti4O/α-Ti+(Ti,Zr)2(Cu,Ni) eutectic/acicular WidmanstÄaten structure/Ti-6Al-4V alloy. With the increase in the brazing temperature, the thickness of the TiO+TiO2+Cu2Ti4O+Ni2Ti4O layer reduced, the content of the α-Ti+(Ti,Zr)2(Cu,Ni) eutectic phase decreased, while that of the coarse α-Ti phase gradually increased. The shear strength of the joints did not show a close relationship with the thickness of the  TiO+TiO2+Cu2Ti4O+Ni2Ti4O layer. However, when the coarse (Ti,Zr)2(Cu,Ni) phase was non-uniformly distributed in the α-Ti phase, or when α-Ti solely situated at the center of the joint, forming a coarse block or even connecting into a continuous strip, the shear strength greatly decreased.

Key words: Brazing, Amorphous filler, Interface, Microstructure, Shear strength