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题名: Microstructure and Microhardness of Laser Metal Deposition Shaping K465/Stellite-6 Laminated Material
作者: Wang, Zhiguo;  Zhao, Jibin;  Zhao, Yuhui;  Zhang, Hongyu;  Shi, Fan
发表日期: 2017-11-1
摘要: K465 superalloy with high titanium and aluminum contents was easy to crack during laser metal deposition. In this study, the crack-free sample of K465/Stellite-6 laminated material was formed by laser metal deposition shaping to control the cracking behaviour in laser metal deposition of K465 superalloy. The microstructure differences between the K465 superalloy with cracking and the laminated material were discussed. The microstructure and intermetallic phases were analyzed through scanning electron microscope (SEM), energy dispersive X-ray spectroscopy (EDS) and X-ray diffraction (XRD). The results showed that the microstructure of K465/Stellite-6 laminated material samples consisted of continuous dendrites with a similar structure size in different alloy deposition layers, and the second dendrite arm spacing was finer compared with laser metal deposition shaping K465. The intermetallic phases in the different alloy deposition layers varied, and the volume fraction of carbides in K465 deposition layer of the laminated material was higher than only K465 deposition under the fluid flow effect. In addition, the composition and microhardness distribution of laminated materials variation occurred along the deposition direction.
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Recommended Citation:
Wang, Zhiguo,Zhao, Jibin,Zhao, Yuhui,et al. Microstructure And Microhardness Of Laser Metal Deposition Shaping K465/stellite-6 Laminated Material[J]. Mdpi Ag,2017,7(11):-.

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