A novel proposal to manipulate the properties of titanium parts by laser surface alloying

Fogagnolo, João Batista; Rodrigues, Adilson Vitor; Lima, Milton Sérgio Fernandes de; Amigó, V.; Caram, Rubens

doi:10.1016/j.scriptamat.2012.11.016

Cited by 27 publications

(18 citation statements)

References 15 publications

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“…However, the application of titanium alloys in friction environment is limited owing to their low hardness and poor wear resistance [3]. In recent decades, laser surface modification techniques have been widely studied to improve the wear performance of titanium alloys, such as laser irradiation [4], laser alloying [5,6], selective laser melting [7], and laser cladding [8].…”

Section: Introductionmentioning

confidence: 99%

Microstructure and property of composite coatings on titanium alloy deposited by laser cladding with Co42+TiN mixed powders

Weng

Chen

et al. 2016

Journal of Alloys and Compounds

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Section: Introductionmentioning

confidence: 99%

Microstructure and property of composite coatings on titanium alloy deposited by laser cladding with Co42+TiN mixed powders

Weng

Chen

et al. 2016

Journal of Alloys and Compounds

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“…With optimum laser processing parameters, a reliable coating that is free of cracks and pores can be produced on the matrix. LSA can rapidly provide a thick and crack-free layer in all instances with metallurgical bonds at the interface between the alloyed layer and the substrate [23]. In LSA, external alloying elements in the form of powder (metal, alloy, ceramic, cermet or intermetallic) are introduced into the surface of a substrate as pre-placed material or injected directly into the melt pool created on the substrate by a high power laser beam.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Studies on the Corrosion Behaviour of Laser Alloyed Zn-Sn Coatings on UNS G10150 Steel in 1M HCl Solution

Fatoba

Popoola

Fedotova

et al. 2015

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Surface deterioration by corrosion is one of the complications associated with ageing facilities and components especially under some service environments. This study was designed to investigate the enhancement in the corrosion and hardness properties of UNS G10150 steel laser alloyed with three different premixed compositions of Zn-Sn binary powders using a 4.4 KW continuous wave (CW) Rofin Sinar Nd:YAG laser processing system. The steel alloyed samples were cut to corrosion coupons, immersed in hydrochloric acid (1M HCl) solution at 30 • C using an electrochemical technique and investigated for their corrosion behaviour. The morphologies and microstructures of the developed coatings and uncoated samples were characterized by an Optic Nikon Optical microscope (OPM) and a scanning electron microscope (SEM/EDS). Moreover, a X-ray diffractometer (XRD) was used to identify the phases present. An improvement of 2.5-times the hardness of the steel substrate was achieved in O. S. Fatoba fatobaolawale@yahoo.com; FatobaOS@tut.ac.za A. P. I. Popoola popoolaapi@tut.ac.za T. Fedotova FedotovaT@tut.ac.za A 1 (0.8) which may be attributed to the fine microstructure, dislocations and the high degree of saturation of solid solution brought by the high scanning speed. At a scanning speed of 0.8 m/min, sample A 1 exhibited the highest polarization resistance R p (3163000 .cm 2 ), lowest corrosion current density i corr (7.95X10 −8 A/cm 2 ), with a lowest corrosion rate Cr (0.000924 mm/year) in 1M HCl solution. The polarization resistance R p (3163000 .cm 2 ) is 392,281-times the polarization of the UNS G10150 steel substrate with a 99.9994 % reduction in the corrosion rate.

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“…Thus, LSM will reduce even more the Young Modulus mismatch between cortical bone and implant. An effective reduction from 82 to 72.5 GPa can be achieved if PM is combined with LSM and this result is promising in comparison to other works done with laser cladding …”

Section: Resultsmentioning

confidence: 57%

Effects of Laser Surface Melting on Ti–30Nb–2Sn Sintered Alloy

et al. 2016

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Laser surface melting (LSM) is used to simultaneously melt a thin layer and quench Ti30Nb-2Sn substrate produced by powder metallurgy route. Results show LSM is useful to eliminate non-desirable open porosity and to reduce even more the Young Modulus. The best microstructure is achieved below the melting pool where high peak temperature combined with high cooling rate during laser processing is present. LSM retains beta titanium without traces of martensite or grain boundary alpha due to oxygen contamination.

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A novel proposal to manipulate the properties of titanium parts by laser surface alloying

Cited by 27 publications

References 15 publications

Microstructure and property of composite coatings on titanium alloy deposited by laser cladding with Co42+TiN mixed powders

Microstructure and property of composite coatings on titanium alloy deposited by laser cladding with Co42+TiN mixed powders

Electrochemical Studies on the Corrosion Behaviour of Laser Alloyed Zn-Sn Coatings on UNS G10150 Steel in 1M HCl Solution

Effects of Laser Surface Melting on Ti–30Nb–2Sn Sintered Alloy

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