METALS AND METAL MATRIX COMPOSITES |
|
|
|
|
|
Isothermal Solidification Kinetics During Transient Liquid Phase Diffusion Bonding of Single Crystal Superalloy |
CHAI Lu, HOU Jinbao, LANG Bo
|
Aeronautical Key Laboratory for Welding and Joining Technologies, AVIC Manufacturing Technology Institute, Beijing 100024, China |
|
|
Abstract Based on the requirement of advanced joining technology of single crystal superalloy blades, the transient liquid phase diffusion of IC9 single crystal superalloy was carried out with nickel base amorphous foils KNi3A. SEM (scanning electron microscopy) was used to observe the microstructures of the joints. The effects of bonding parameters on microstructure were studied. Influence mechanism of temperature on isothermal solidification kinetics was expounded. Results show that, solute diffusion coefficient increases and solute concentration gradient decreases with the increasing of temperature at the same time. Solute diffusion rate firstly increases and then decrease, and then result in solidification time initially decrease and then increase with temperature increasing. The research results can provide the necessary theoretical basis for joining of single crystal blades and have certain guiding significance for the field of aviation manufacturing.
|
Published: 12 September 2020
|
|
About author:: Lu Chai, born in 1985, a senior engineer in AVIC Manufacturing Technology Institute, mainly engaged in advanced joint technology of aviation materials. |
|
|
1 Chai Lu, Huang Jihua, Hou Jinbao, et al. Transactions of Materials and Heat Treatment, 2014, 35(11), 117(in Chinese). 柴禄, 黄继华, 侯金保, 等. 材料热处理学报, 2014, 35(11), 117. 2 Ye Lei, Mao Wei, Xie Yonghui, et al. Journal of Materials Engineering, 2004(3), 42(in Chinese). 叶雷, 毛唯, 谢永慧, 等. 材料工程, 2004(3), 42. 3 Cao Jian, Song Xiaoguo, Zheng Zujin,et al. Transactions of the China Welding Institution, 2011, 32(7), 13(in Chinese). 曹健, 宋晓国, 郑祖金, 等. 焊接学报, 2011, 32(7), 13. 4 Lang Bo, Hou Jin-bao, Wu Song. Journal of Materials Engineering, 2010(10), 32(in Chinese). 郎波, 侯金保, 吴松.材料工程, 2010(10), 32. 5 Chai Lu, Huang Jihua, Wang Li, Hou Jinbao, et al. Aeronautical Manufacturing Technology, 2015, 472(3),64(in Chinese). 柴禄, 黄继华, 王立, 侯金保, 等. 航空制造技术, 2015, 472(3), 64. 6 Chai Lu, Hou Jinbao, Lang Bo, Journal of Materials Engineering and Performance, 2018, 27(11), 5718. 7 Chai Lu, Hou Jinbao, Zhang sheng. Transactions of the China Welding Institution, 2018(8),114(in Chinese). 柴禄, 侯金保, 张胜. 焊接学报, 2018(8),114. 8 Li Wen. Scripta Materialia, 2003, (48), 1283. 9 Chai Lu, Huang Jihua, Hou Jinbao, et al. Journal of Materials Enginee-ring and Performance, 2015, 24(6), 2287. 10 Broomfield R W. Fifth international charles parsons turbine conference, Cambridge University Press, 2000. 11 Ghoneim A, Ojo O A. Materials Characterization, 2011, 62(1), 1. 12 Zhou Y. Journal of Materials Science Letters, 2001, 20, 841. |
|
|
|