Microstructure of Laser In Situ Synthesized TiBx+TiC Reinforced Composite Coatings

Jing Liang; Chao Wang; Sui Yuan Chen; C.S. LIU; Cheng Yu Yang

doi:10.4028/www.scientific.net/AMR.1061-1062.526

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 1061-1062Microstructure of Laser In Situ Synthesized...

Microstructure of Laser In Situ Synthesized TiB_x+TiC Reinforced Composite Coatings

Abstract:

B₄C/TiNi mixed powders with different composition (10B₄C+90TiNi and 20B₄C+80TiNi in wt. %) prepasted on Ti-6Al-4V substrates were scanned by a FL-Dlight02-3000W semiconductor laser to obtain TiB_x+TiC reinforced graded composite coatings. The influences of the processing parameters on the microstructure of the coatings were studied. Optimal processing parameters were obtained with laser power (P) 1700W/1900W, laser scanning speed (V) 6.67mm/s and defocus length 310mm. The microstructures and phases of the coatings were analyzed with OM, SEM and XRD respectively. Graded composite coatings with in-situ synthesis of TiC, TiB and TiB₂ reinforcements in the matrix of Ti₂Ni and TiNi were obtained.

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Periodical:

Advanced Materials Research (Volumes 1061-1062)

Pages:

526-529

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1061-1062.526

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Online since:

December 2014

Authors:

Jing Liang*, Chao Wang, Sui Yuan Chen, C.S. LIU, Cheng Yu Yang

Keywords:

(TiB_x+TiC)/TiNi, Composite Coating, In Situ, Laser Cladding, Microstructure

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