Isothermal solidification process of TLP diffusion bonding for DD3 superalloy

被引：1
|
作者：
Li X.-H. [1 ]
Ye L. [1 ]
Zhong Q.-P. [2 ]
Cao C.-X. [1 ]
Xiong H.-P. [1 ]
机构：
[1] Beijing Institute of Aeronautical Materials
[2] Beihang University
来源：
Hangkong Cailiao Xuebao/Journal of Aeronautical Materials | 2011年 / 31卷 / 06期
关键词：
Isothermal solidification; Model; Transient phase diffusion bonding;
D O I：
10.3969/j.issn.1005-5053.2011.6.001
中图分类号：
学科分类号：
摘要：
The TLP bonding process for DD3 superalloy using a B-contain interlayer alloy with different temperature and holding-time is analyzed. Microstructures of different joints were observed and the widths of the eutectic zone of the centre of the joints were measured. It shows that the width is inversely proportional to the square root of holding time. Based on the result, the time for isothermal-solidification at 1150°C, 1200°C and 1250°C are not more than 3h, 2h and 1h respectively by the estimation. By establishing the diffusion model and using the error function solution to the second Fick's law, the time for isothermal-solidification at different temperature is calculated by Ni-B phase-diagram and DD3-B analogous phase-diagram, respectively. The calculated results show that for a certain bonding system, there exists an optimum temperature at which the time for isothermal solidification is the shortest. According to the experimental results, it is suitable to choose 1250°C as the bonding temperature for DD3 superalloy.
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页码：1 / 6
页数：5
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共 17 条
  • [1] Gell M., Duhl D.N., Giamei A.F., The development of single crystal superalloy turbine blades, Superalloys, pp. 205-214, (1980)
  • [2] Gell M., Duhl D.N., Gupta D.K., Et al., Advanced superalloy airfoils, J of Metals, 7, pp. 11-15, (1987)
  • [3] Erickson G.L., The development and application of CMSX-10, Superalloys, pp. 35-44, (1996)
  • [4] Giamei A.F., Salked R.W., Hager C.W., Energy Efficient Engine High-Pressure Turbine Single Crystal Vane and Blade Fabrication Technology Report, (1981)
  • [5] Nishimotok, Saida K., Kim D., Et al., Transient liquid phase bonding of Ni-base single crystal superalloy CMSX-2, ISIJ International, 35, 10, pp. 1298-1306, (1995)
  • [6] Ninshimoto K., Saida K., Kim D., Et al., Bonding phenomena and joint properties of transient liquid phase bonding of Ni-base single crystal superalloys, Welding in the World, 41, 2, pp. 121-131, (1998)
  • [7] Nishimoto K., Saida K., Kim D., Et al., Homogenization behavior of alloying element during transient liquid phase bonding of Ni-base single crystal superalloy (Report 8), Quarterly Journal of the Japan Welding Society, 15, 3, pp. 509-514, (1997)
  • [8] Nakao Y., Saida K., Nishimoto K., Et al., Oxidation and recrystallization behaviors of Ni-base single crystal superalloy, CMSX-2. Transient liquid phase bonding of Ni-base single crystal superalloy (Report 1), Quarterly Journal of the Japan Welding Society, 14, 4, pp. 723-730, (1996)
  • [9] 23, 4, pp. 171-178, (1987)
  • [10] pp. 792-806, (2002)
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