Laser synthesis of titanium aluminides matrix composite coatings reinforced by in-situ titanium carbide particles on Ti-6Al-4V substrate

2004 ◽  
Author(s):  
Xiaoli Li ◽  
Wenjin Liu ◽  
Minlin Zhong ◽  
Sanhuan Wang ◽  
Ruizhang Ba
Keyword(s):  
Titanium Carbide ◽  
Matrix Composite ◽  
Titanium Aluminides ◽  
Composite Coatings ◽  
Laser Synthesis ◽  
Carbide Particles

Laser cladding Ni-base composite coatings reinforced by in-situ synthesized multiple carbide particles

2008 ◽  
Author(s):  
Ruiquan Kang ◽  
Mingxing Ma ◽  
Wenjin Liu ◽  
Minlin Zhong ◽  
Yide Kan ◽  
...  
Keyword(s):  
Laser Cladding ◽  
Composite Coatings ◽  
Base Composite ◽  
Carbide Particles

Microstructure of In Situ TiB Reinforced Titanium Matrix Composite Coatings by Laser Cladding with Different Pre-Placed Powder Thickness

2011 ◽  
Vol 239-242 ◽  
pp. 899-902
Author(s):  
You Feng Zhang ◽  
Jun Li
Keyword(s):  
Composite Coating ◽  
Matrix Composite ◽  
Laser Cladding ◽  
Powder Mixture ◽  
Composite Coatings ◽  
Matrix Composites ◽  
Titanium Matrix ◽  
Titanium Matrix Composite ◽  
Titanium Matrix Composites

In situ reaction synthesized TiB reinforced titanium matrix composites were fabricated using rapid non-equilibrium synthesis techniques of laser cladding. Titanium matrix composite were laser cladding treated on Ti-6Al-4V using Ti and B powder mixture, and the designed weight fractions of B were 10 wt.% in the starting powder mixture. The composite coating mainly consists of α-Ti and TiB. The reinforcement TiB is dispersed homogeneously in the composite coating with pre-placed powder thickness of 0.5mm. The influence of pre-placed powder thickness on microstructure of laser cladding coatings was discussed.

In Situ Laser Synthesis of Fe-Based Amorphous Matrix Composite Coating on Structural Steel

2012 ◽  
Vol 43 (13) ◽  
pp. 4957-4966 ◽  
Author(s):  
Shravana Katakam ◽  
Jun Y. Hwang ◽  
Sameer Paital ◽  
Rajarshi Banerjee ◽  
Hitesh Vora ◽  
...  
Keyword(s):  
Structural Steel ◽  
Composite Coating ◽  
Matrix Composite ◽  
Amorphous Matrix ◽  
Laser Synthesis

Microstructures and Properties of Ti Matrix Composite Coatings with Ex/In Situ TiC Reinforced

2012 ◽  
Vol 522 ◽  
pp. 183-186
Author(s):  
Qing Yu ◽  
Yao Ning Sun ◽  
Wen Lei Sun ◽  
Xu Dong Zhang
Keyword(s):  
Matrix Composite ◽  
Laser Cladding ◽  
Deleterious Effect ◽  
Composite Coatings ◽  
Pure Titanium ◽  
Micro Hardness ◽  
Maximum Value ◽  
Coarse Microstructure ◽  
Ti Powder

Using laser cladding technique, TiC reinforced Ti matrix composite coatings were fabricated by preplacing TiC, (Ti+C), (Ti+TiC) powders respectively on the TA2 pure titanium surface.By means of XRD, SEM and Hv-Test, microstructures and microhardness were investigated. The results show that phases of the coatings are all composed of TiC and α-Ti. Delamination phenomenon appears when laser clad pure TiC coating, which has deleterious effect on properties. TiC phase is in-situ synthesized during laser clad (Ti+C) coating, but microstructure is coarse. Microstructure of (Ti+TiC) coating is the most uniform and dense of the three coatings. The microhardness sequence of the three coatings is (Ti+TiC)>TiC>(Ti+C), and the maximum value is Hv1246, Hv1213 and Hv1135 respectively. The main reason leads to the highest micro-hardness of (Ti+TiC) coating is the Ti powder is beneficial to laser cladding and large amount of TiC reinforcement formed which is compact and uniform.

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