Microstructural evolution in laser deposited nickel–titanium–carbon in situ metal matrix composites

Gopagoni, Sundeep; Hwang, Jane; Singh, Avtar; Mensah, B.A.; Bunce, Nancy; Tiley, J.; Scharf, Thomas; Banerjee, Rajarshi

doi:10.1016/j.jallcom.2010.09.208

Cited by 59 publications

(20 citation statements)

References 16 publications

(19 reference statements)

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“…In the area of turbo-engines for aerospace and stationary power generation, there is a continuous demand for new ultra-high temperature structural materials with high strength and thermal stability at elevated temperatures, and consequently, improving the energy efficiency and reducing the polluting emission such as CO 2 and NOx [1][2][3]. It is well known that eutectic in situ composite ceramics have high melting point, hardness, creep resistance and sufficient chemical stability at elevated temperatures but are sensitive to plastic deformation [4,5].…”

Section: Introductionmentioning

confidence: 99%

Directional solidification and microstructural development of Al2O3/GdAlO3 eutectic ceramic in situ composite under rapid growth conditions

Zhang

et al. 2011

Journal of Alloys and Compounds

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Section: Introductionmentioning

confidence: 99%

Directional solidification and microstructural development of Al2O3/GdAlO3 eutectic ceramic in situ composite under rapid growth conditions

Zhang

et al. 2011

Journal of Alloys and Compounds

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“…Depending on the wear environment and specific usage, a wide variety of ceramic particles can be selected as the reinforcements to be incorporated into the metal matrix, such as carbides, nitrides, oxides, and borides [1][2][3]. In recent years, novel processing routes have evolved, where the reinforcement can be grown in situ in the metal matrix utilizing either the exothermic nature of reactions or the crystallization during solidification [4,5].…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Tribological Behavior of Laser in Situ Synthesized TiC-Reinforced Fe-Based Composite Coatings

Du¹,

Wang

Zou

2011

Tribol Lett

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Fe-based composite coatings reinforced with TiC particles were prepared by laser surface engineering from precursor of ferrotitanium and graphite. Microstructure of the composite coatings was comprised of dendritic TiC dispersed in a ferrite matrix. In situ dendritic TiC was formed by mechanism of precipitating from the liquid Fe-Ti-C alloy system. Composite coatings showed a substantial increase in microhardness in comparison to that of the substrate. Dry sliding wear tests performed at room temperature revealed that the in situ composite coating possessed a considerably reduced wear volume loss owing to the presence of in situ synthesized TiC. A relatively smooth surface was observed for in situ TiC/Fe composite coating due to its high resistance to ploughing and adhesion, which is caused by the uniformly dispersed TiC reinforcement with high volume fraction.

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“…For instance, laser engineered net shaping (LENS) has been employed to fabricate selflubricating wear resistant metal matrix coatings and owing to their industrial worth is now patented. 24 In addition, the material systems that comprises of the solid lubricants have considerable value and are being patented. load is showed in Fig.…”

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confidence: 99%

Mechanical and tribological performance of a hybrid MMC coating deposited on Al–17Si piston alloy by laser composite surfacing technique

et al. 2018

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Laser composite surfacing (LCS) is a photon driven manufacturing technology that can be utilized for depositing hybrid metal matrix composite coatings (HMMC) on softer Ti/Al/Mg alloys to enhance their tribo-mechanical properties. LCS offers the advantages of higher directionality, localized microstructural refinement and higher metallurgical bonding between coating and substrate. The current research presents the tribo-mechanical evaluation and characterization of solid lubricant based Ni-WC coatings deposited by LCS on Al-Si piston alloy by varying the concentration of graphite between 5-to-15-weight percentage. The tribological behavior of LCS samples was investigated using a ball-on-plate tribometer.Results indicate that the surface hardness, wear rate and friction coefficient of the Al-Si hypereutectic piston alloy were improved after LCS of graphite based HMMC coatings. The maximum surface hardness of 781H v was acquired for the Ni-WC coating containing 5 wt% graphite. The friction coefficient of Al-Si under dry sliding conditions was reduced from 0.47 to 0.21. The reduction in the friction coefficient was attributed to the formation of a shearable transfer layer, which prevented delamination and reduced adhesion, abrasion and fatigue cracking.

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Microstructural evolution in laser deposited nickel–titanium–carbon in situ metal matrix composites

Cited by 59 publications

References 16 publications

Directional solidification and microstructural development of Al2O3/GdAlO3 eutectic ceramic in situ composite under rapid growth conditions

Directional solidification and microstructural development of Al2O3/GdAlO3 eutectic ceramic in situ composite under rapid growth conditions

Microstructure and Tribological Behavior of Laser in Situ Synthesized TiC-Reinforced Fe-Based Composite Coatings

Mechanical and tribological performance of a hybrid MMC coating deposited on Al–17Si piston alloy by laser composite surfacing technique

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