The Study on Microstructure and Wear Resistance of In-situ Synthesis of TiAl(CN)/Fe Cermet Composite Coating

Titanium composite strengthened by Ti3Al precipitations is considered to be one of the excellent materials that is widely used in engineering. In this work, we prepared a kind of Ti-Ti3Al metallic composite by in-situ synthesis technology during the SLM (selective laser melting) process, and analyzed its microstructure, wear resistance, microhardness, and compression properties. The results showed that the Ti-Ti3Al composite, prepared by in-situ synthesis technology based on SLM, had more homogeneous Ti3Al-enhanced phase dispersion strengthening structure. The grain size of the workpiece was about 1 μm, and that of the Ti3Al particle was about 200 nm. Granular Ti3Al was precipitated after the aluminum-containing workpiece formed, with a relatively uniform distribution. Regarding the mechanical properties, the hardness (539 HV) and the wear resistance were significantly improved when compared with the Cp-Ti workpiece. The compressive strength of the workpiece increased from 886.32 MPa to 1568 MPa, and the tensile strength of the workpiece increased from 531 MPa to 567 MPa after adding aluminum. In the future, the combination of in-situ synthesis technology and SLM technology can be used to flexibly adjust the properties of Ti-based materials.

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In-situ synthesis of TiC/graphene/Ti6Al4V composite coating by laser cladding

Materials Letters ◽

10.1016/j.matlet.2020.127711 ◽

2020 ◽

Vol 270 ◽

pp. 127711 ◽

Cited By ~ 4

Author(s):

Lizheng Zhang ◽

Zhanyong Zhao ◽

Peikang Bai ◽

Wenbo Du ◽

Yuxin Li ◽

...

Keyword(s):

Composite Coating ◽

Laser Cladding ◽

In Situ Synthesis

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Microstructure and wear resistance of in situ NbC particles reinforced Ni-based alloy composite coating by laser cladding

Journal of Wuhan University of Technology-Mater Sci Ed ◽

10.1007/s11595-012-0443-1 ◽

2012 ◽

Vol 27 (2) ◽

pp. 231-237 ◽

Cited By ~ 10

Author(s):

Gang Dong ◽

Biao Yan ◽

Qilin Deng ◽

Ting Yu

Keyword(s):

Wear Resistance ◽

Composite Coating ◽

Laser Cladding ◽

Alloy Composite

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High-temperature wear resistance of a laser clad TiC reinforced FeAl in situ composite coating

Surface and Coatings Technology ◽

10.1016/s0257-8972(03)00821-1 ◽

2004 ◽

Vol 179 (2-3) ◽

pp. 252-256 ◽

Cited By ~ 25

Author(s):

Y. Chen ◽

H.M. Wang

Keyword(s):

Wear Resistance ◽

High Temperature ◽

Composite Coating ◽

In Situ Composite ◽

High Temperature Wear

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SURFACE PROPERTIES OF THE IN SITU FORMED CERAMICS REINFORCED COMPOSITE COATINGS ON TI-3AL-2V ALLOYS

Surface Review and Letters ◽

10.1142/s0218625x12500096 ◽

2012 ◽

Vol 19 (02) ◽

pp. 1250009 ◽

Cited By ~ 3

Author(s):

PENG LIU ◽

WEI GUO ◽

DAKUI HU ◽

HUI LUO ◽

YUANBIN ZHANG

Keyword(s):

Wear Resistance ◽

Titanium Alloy ◽

Composite Coating ◽

Surface Properties ◽

Laser Cladding ◽

Composite Coatings ◽

Micro Hardness ◽

Reinforced Composite

The synthesis of hard composite coating on titanium alloy by laser cladding of Al/Fe/Ni+C/Si3N4 pre-placed powders has been investigated in detail. SEM result indicated that a composite coating with metallurgical joint to the substrate was formed. XRD result indicated that the composite coating mainly consisted of γ- (Fe, Ni) , FeAl , Ti3Al , TiC , TiNi , TiC0.3N0.7 , Ti2N , SiC , Ti5Si3 and TiNi . Compared with Ti-3Al-2V substrate, an improvement of the micro-hardness and the wear resistance was observed for this composite coating.

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