Search Results - "Lima, Milton Sérgio Fernandes"
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Corrosion Susceptibility and Functionally Graded Properties of Ti-35Nb-4Sn Alloy Processed by Laser Remelting
Published in Materials research (São Carlos, São Paulo, Brazil) (01-01-2020)“…The effect of laser remelting on the corrosion susceptibility and mechanical properties of Ti-35Nb-4Sn (mass%) alloy is investigated across the remelted track…”
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Surface Modification of Ti6Al4V Alloy by Pulsed Lasers: Microstructure and Hydrophobic Behavior
Published in Materials research (São Carlos, São Paulo, Brazil) (01-01-2017)“…In many aerospace applications, it is important to produce hydro-repellent surfaces because water and ice accumulation could lead to malfunctioning of the part…”
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Characterization of Phase Transformations and Microstructural Changes in an API 5CT L80 Steel Grade During Ni Alloy Laser Cladding
Published in Materials research (São Carlos, São Paulo, Brazil) (01-01-2018)“…The superficial coatings in micro-alloyed steel pipes has been a pointed way to decrease the corrosion problems in oil and gas industry. However, little…”
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Effect of laser welding heat input on fatigue crack growth and CTOD fracture toughness of HSLA steel joints
Published in Journal of materials research and technology (01-03-2021)“…High strength low alloy steels are employed in structural elements and, despite presenting good weldability, the welded joint is always a critical issue and…”
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Microstructural analyses and wear behavior of the cemented carbide tools after laser surface treatment and PVD coating
Published in Applied surface science (01-10-2013)“…•We propose a laser microtexturing technique to enhance lifetime of cemented carbide tools.•It is studied a macroscopic phenomenon – machinability of metals –…”
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Heat treatment effects on the hardness and wear behavior of laser-welded AISI40 martensitic steel plates
Published in International journal of advanced manufacturing technology (01-05-2021)“…The use of laser beams for joining materials has grown along with the need to weld more challenging materials such as martensitic steels. In this work, an AISI…”
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Phase Separation and Development of the Microstructure for Stainless Steel to Copper Alloy Weld Joints Using a Fiber Laser
Published in Journal of aerospace technology and management (01-01-2019)“…Stainless steel and copper alloys joints are often applied in aerospace, marine and power industries where both high thermal and electrical conductivity (Cu)…”
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A crack propagation study on T-joints of AA6013-T4 aluminum alloy welded by an Yb:fiber laser
Published in International journal of advanced manufacturing technology (01-09-2017)“…A fundamental aspect of the replacement of the riveted to welded aluminum aircraft fuselage sections is the fatigue behavior. In this work, a fiber laser was…”
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Microstructure and mechanical behavior of laser additive manufactured AISI 316 stainless steel stringers
Published in Materials in engineering (01-03-2014)“…•We produce large aspect ratio stainless steel structures with very good tensile properties.•The flexural tests proved that the cladded layers had very good…”
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10
Assessment of the Fatigue Behavior of Ti-6Al-4V ELI Alloy with Surface Treated by Nd:YAG Laser Irradiation
Published in Materials research (São Carlos, São Paulo, Brazil) (01-01-2019)“…The effect of a surface treatment by Nd:YAG laser irradiation on the fatigue behavior of Ti-6Al-4V ELI was studied. Axial fatigue tests were performed to…”
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11
Laser texturing of substrate of coated tools — Performance during machining and in adhesion tests
Published in Surface & coatings technology (25-08-2015)“…In machining, a laser beam with a high density of energy can be used to promote nano- or microstructural surface changes of the substrate of the tools with the…”
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12
A Comparative Study of the Heat Input During Laser Welding of Aeronautical Aluminum Alloy AA6013-T4
Published in Journal of aerospace technology and management (01-01-2018)“…ABSTRACT The heat input is the amount of energy supplied per unit length of the welded workpiece. In this study, the effect of two different heat inputs in…”
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13
Occurrence of defects in laser beam welded Al-Cu-Li sheets with t-joint configuration
Published in Journal of aerospace technology and management (2012)“…In the aerospace industry, laser beam welding has been considered as one of the most promising routes among the new manufacturing processes. Substitution of…”
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Mechanical and Corrosion Properties of a Duplex Steel Welded using Micro-Arc or Laser
Published in Materials research (São Carlos, São Paulo, Brazil) (01-08-2015)“…Duplex stainless steels have been extensively used in parts that are subject to corrosive environments and that have high mechanical strength requirements…”
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15
Pulsed laser damage threshold evaluation of a carbon fiber composite skin and its effects on internal substrates
Published in Optics and laser technology (01-11-2021)“…•Carbon fiber reinforced plastics (CFRP) could be laser drilled using fiber lasers.•The CFRP threshold damage energy for a pulsed beam is 0.8 J.•A focused beam…”
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Laser beam welding of DP980 dual phase steel at high temperatures
Published in Optics and laser technology (01-04-2020)“…•It is proposed a new technique for laser welding of dual phase steels.•Keyhole welded DP980 steels presents a ferritic-austenitic microstructure.•The…”
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Laser Beam Welding of CubeSat 1U Structure Parts Obtained by Powder Bed Fusion
Published in Metals (Basel ) (01-11-2022)“…This study contributes to a possible methodology for manufacturing CubeSats using additive manufacturing and laser beam welding. Titanium connectors were…”
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Effect of laser welding on microstructure and mechanical behaviour of dual phase 600 steel sheets
Published in Heliyon (01-12-2021)“…Dual Phase steels are one of the most used advanced high-strength materials in the industry, due to its combination of a ductile ferritic matrix and disperse…”
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A Comparative Study of Abbreviated Heat Treatments for SAE 4130 Steel After Laser Welding
Published in Materials research (São Carlos, São Paulo, Brazil) (01-01-2020)“…It was verified that SAE 4130 steel plates crack when laser beam welded at room temperature (RT). To overcome this problem, this work proposes a high…”
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Phase transformations in an AISI 410S stainless steel observed in directional and laser-induced cooling regimes
Published in Materials research (São Carlos, São Paulo, Brazil) (01-01-2012)“…The applications of the chromium ferritic stainless steel AISI 410S have been considerably increased in the last years in many technical fields as chemical…”
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