scholarly journals Microstructure and Sliding Wear Behaviour of In-Situ TiC-Reinforced Composite Surface Layers Fabricated on Ductile Cast Iron by Laser Alloying

Materials ◽  
2018 ◽  
Vol 11 (1) ◽  
pp. 75 ◽  
Author(s):  
Damian Janicki
Keyword(s):  
Sliding Wear ◽  
Ductile Cast Iron ◽  
Wear Behaviour ◽  
Laser Alloying ◽  
Surface Layers ◽  
Composite Surface ◽  
Reinforced Composite ◽  
In Situ Tic ◽  
Sliding Wear Behaviour

scholarly journals Effect of Chromium and Molybdenum Addition on the Microstructure of In Situ TiC-Reinforced Composite Surface Layers Fabricated on Ductile Cast Iron by Laser Alloying

Materials ◽  
2020 ◽  
Vol 13 (24) ◽  
pp. 5750 ◽  
Author(s):  
Damian Janicki
Keyword(s):  
Cast Iron ◽  
Molten Pool ◽  
Ductile Cast Iron ◽  
Total Hardness ◽  
Growth Morphology ◽  
Surface Layers ◽  
Composite Surface ◽  
Reinforced Composite ◽  
In Situ Tic

In situ TiC-reinforced composite surface layers (TRLs) were produced on a ductile cast iron substrate by laser surface alloying (LA) using pure Ti powder and mixtures of Ti-Cr and Ti-Mo powders. During LA with pure Ti, the intensity of fluid flow in the molten pool, which determines the TRL’s compositional uniformity, and thus Ti content in the alloyed zone, was directly affected by the fraction of synthesized TiC particles in the melt—with increasing the TiC fraction, the convection was gradually reduced. The introduction of additional Cr or Mo powders into the molten pool, due to their beneficial effect on the intensity of the molten pool convection, elevated the Ti concentration in the melt, and, thus, the TiC fraction in the TRL. It was found that the melt enrichment of Cr, in conjunction with non-equilibrium cooling conditions, suppressed the martensitic transformation of the matrix, which lowered the total hardness of the TRL. Moreover, the presence of Cr in the melt (~3 wt%) altered the growth morphology of the synthesized primary TiC precipitates compared with that obtained using pure Ti. The addition of Mo in the melt produced (Ti, Mo)C primary precipitates that exhibited a nonuniform Mo distribution (coring structure). The dissolution of Mo in the primary TiC precipitates did not affect its growth morphology.

Dry sliding wear behaviour of AA 6351-ZrB2 in situ composite at room temperature

2010 ◽  
Vol 31 (3) ◽  
pp. 1526-1532 ◽  
Author(s):  
G. Naveen Kumar ◽  
R. Narayanasamy ◽  
S. Natarajan ◽  
S.P. Kumaresh Babu ◽  
K. Sivaprasad ◽  
...  
Keyword(s):  
Sliding Wear ◽  
Room Temperature ◽  
Wear Behaviour ◽  
Dry Sliding Wear ◽  
Dry Sliding ◽  
In Situ Composite ◽  
Sliding Wear Behaviour

Sliding wear behaviour of T6 treated A356–TiB2 in-situ composites

Wear ◽  
2009 ◽  
Vol 266 (7-8) ◽  
pp. 865-872 ◽  
Author(s):  
A. Mandal ◽  
B.S. Murty ◽  
M. Chakraborty
Keyword(s):  
Sliding Wear ◽  
Wear Behaviour ◽  
In Situ Composites ◽  
Sliding Wear Behaviour

Sliding wear behaviour of Al 6063/TiB2 in situ composites at elevated temperatures

2009 ◽  
Vol 30 (7) ◽  
pp. 2521-2531 ◽  
Author(s):  
S. Natarajan ◽  
R. Narayanasamy ◽  
S.P. Kumaresh Babu ◽  
G. Dinesh ◽  
B. Anil Kumar ◽  
...  
Keyword(s):  
Sliding Wear ◽  
Elevated Temperatures ◽  
Wear Behaviour ◽  
In Situ Composites ◽  
Sliding Wear Behaviour
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