Effect of Al on Microstructure and Tensile Behavior of an Additive Manufacturing Nickel-Based Superalloy

被引：0
作者：
Zhu Y. [1 ,2 ]
Song W. [1 ]
Liang J.-J. [1 ]
Li J.-G. [1 ]
机构：
[1] Institute of Metal Research, Chinese Academy of Sciences, Shenyang
[2] School of Materials Science and Engineering, University of Science and Technology of China, Shenyang
来源：
Dongbei Daxue Xuebao/Journal of Northeastern University | 2023年 / 44卷 / 03期
关键词：
additive manufacturing; Al element; hot cracks; nickel-based superalloy; tensile behavior;
D O I：
10.12068/j.issn.1005-3026.2023.03.006
中图分类号：
学科分类号：
摘要：
To clarify the effect of Al on the microstructure and properties of nickel base superalloy produced by additive manufacturing, the effects of Al on the microstructure, tensile properties and deformation mechanism were analyzed via the Ni based superalloys with different Al contents prepared by laser metal deposition. The experimental results show that with the improvement of Al content(3% to 5%), the γ/ γ′ eutectic, carbides and cracks in microstructure increase a few. When the Al content reaches 7%, the quantity of γ/ γ′ eutectic and carbides increase prominently. A large number of solidification cracks and liquefaction cracks, which are formed due to the pinning of high melting point carbides at grain boundaries and the remelting of low melting point eutectic, respectively, can be observed. The strength of the alloy increases first and then decreases with the increase of Al element, and the alloy with 4% Al has the highest strength. It is due to the increasing size and cubic of γ′phase that hinders the movement of dislocations effectively. The decrease of strength and plasticity of the alloy with 5% Al is attributed to the increase of existed hot cracks, carbides and eutectic. © 2023 Northeastern University. All rights reserved.
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页码：348 / 356
页数：8
相关论文
共 18 条
[1]  
Acharya R, Bansal R, Gambone J J, Et al., A coupled thermal, fluid flow, and solidification model for the processing of single crystal alloy CMSX-4 through scanning laser epitaxy for turbine engine hot-section component repair(part I) [ J], Metallurgical & Materials Transactions B, 45, 6, pp. 2247-2261, (2014)
[2]  
Arcella F G, Froes F H., Producing titanium aerospace components from powder using laser forming [ J ], JOM, 52, 5, pp. 28-30, (2000)
[3]  
Gel M, Duhl D N, Giamei A F., The development of single crystal superalloy turbine blades [ C ], Superalloys 1980, pp. 205-214, (1980)
[4]  
Wang Hua-ming, Materials′ fundamental issues of laser additive manufacturing for high-performance large metallic components [ J], Acta Aeronautica et Astronautica Sinica, 35, 10, pp. 2690-2698, (2014)
[5]  
Zhao Yu-hui, Wang Zhi-guo, Long Yu, Et al., Factor of temperature of molten pool of Inconel 625 superalloy by laser additive manufacturing [J], Applied Laser, 2, pp. 137-144, (2015)
[6]  
Liu J., Formation of cross-sectional profile of a clad bead in coaxial laser cladding [ J], Optics and Laser Technology, 39, 8, pp. 1532-1536, (2007)
[7]  
Li Jia-ning, Chen Chuan-zhong, Research situation of laser cladding technology in aviation manufacturing [ J ], New Technologies of Special Machining, 5, pp. 51-54, (2010)
[8]  
Fu Ge-yan, Liu Yi-lun, Shi Shi-hong, Influence factors and control methods of laser cladding cracking [ J ], Optical Technique, 1, pp. 84-89, (2000)
[9]  
Xie Yu-jiang, Wang Mao-cai, Wang Ming-sheng, Research progress of laser and micro arc spark surface fusion welding of nickel base superalloy with high Al and Ti content [ J], China Surface Engineering, 5, pp. 1-16, (2010)
[10]  
Chen Zhi-jun, Zhang Qun-li, Lou Cheng-hua, Et al., Crack control method of Inconel 738 laser cladding layer [ J], Applied Laser, 1, pp. 7-13, (2013)
12