Next Article in Journal
Hexagonal Boron Nitride Impregnated Silane Composite Coating for Corrosion Resistance of Magnesium Alloys for Temporary Bioimplant Applications
Previous Article in Journal
The Biological Responses to Magnesium-Based Biodegradable Medical Devices
Open AccessArticle

Microstructure and Microhardness of Laser Metal Deposition Shaping K465/Stellite-6 Laminated Material

1
Equipment Manufacturing Technology Research Laboratory, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, China
2
Superalloys Division, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China
*
Author to whom correspondence should be addressed.
Metals 2017, 7(11), 512; https://doi.org/10.3390/met7110512
Received: 18 October 2017 / Revised: 5 November 2017 / Accepted: 16 November 2017 / Published: 22 November 2017
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. View Full-Text
Keywords: laser metal deposition shaping; laminated material; microstructure; microhardness laser metal deposition shaping; laminated material; microstructure; microhardness
Show Figures

Graphical abstract

MDPI and ACS Style

Wang, Z.; Zhao, J.; Zhao, Y.; Zhang, H.; Shi, F. Microstructure and Microhardness of Laser Metal Deposition Shaping K465/Stellite-6 Laminated Material. Metals 2017, 7, 512.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop