Influence of laser metal deposition direction in the abrasive and adhesive wear resistance of Ni-Cr-B-Si coatings

Preliminary characterization of the microstructure of Al/SiCp composites prepared by Laser Metal Deposition (LMD) was analyzed, and the microhardness and wear behavior of the materials manufactured have been evaluated. It has been determined that the combined effect of the laser speed and power is decisive for the fabrication process. The microstructure characterization shows that the presence of hygroscopic Al4C3 can be avoided by adding Ti to the composite matrix. The wear behavior of the LMD samples and their microhardness have been compared with Powder Metallurgy samples with the same composition. The LMD samples showed higher hardness and wear resistance.

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Microstructure, wear resistance and microhardness of W-particle-strengthened Ti6Al4V composite produced with laser metal deposition

Materiali in tehnologije ◽

10.17222/mit.2017.076 ◽

2018 ◽

Vol 52 (3) ◽

pp. 269-274

Author(s):

N. Ndou ◽

E. Akinlabi

Keyword(s):

Wear Resistance ◽

Metal Deposition ◽

Laser Metal Deposition

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The Microstructure, Wear Resistance and Corrosion Behaviour of Ti64l4V+W Composite in 3.5 wt% NaCl Solution of Laser Metal Deposition

Transactions on Engineering Technologies ◽

10.1007/978-981-15-9209-6_11 ◽

2021 ◽

pp. 153-163

Author(s):

Ndivhuwo Ndou

Keyword(s):

Wear Resistance ◽

Corrosion Behaviour ◽

Metal Deposition ◽

Laser Metal Deposition ◽

Nacl Solution

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Application of Laser Metal Deposition for Fabrication of Titanium Matrix Wear-Resistant Coating and its Wearing Performance

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.44-47.316 ◽

2010 ◽

Vol 44-47 ◽

pp. 316-320 ◽

Cited By ~ 6

Author(s):

Lan Yun Qin ◽

Guang Yang ◽

Wei Wang ◽

Ming Tong ◽

Xing Liang Wang

Keyword(s):

Metal Deposition ◽

Functionally Graded ◽

Dry Sliding Wear ◽

Laser Metal Deposition ◽

Titanium Matrix ◽

Wear Properties ◽

Graded Materials ◽

Gradient Distribution ◽

Deposition Direction ◽

In Situ Tic

TiC reinforced titanium matrix functionally graded materials （FGM） has been produced by processes of laser metal deposition through changing the powder feed rate of Ti and Cr3C2 powder. The OM, SEM, EDS methods were used to analyze the components and microstructure of the coatings. Microhardness and wearing resistance at room temperature of the FGM coating were examined by microhardness tester and wear tester respectively. The results show that FGM coating reinforced by in-situ TiC apparently improved hardness of Ti alloy; the microhardness can reach HV1100, and present gradient distribution along deposition direction. Dry sliding wear properties of these FGM coatings have been compared with substrate materials wearing. The observed wearing mechanisms are summarized and related to detailed microstructural observations. The results show the wear resistance of the coating can be improved by 46.6 times.

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