Material Properties of Ti6Al4V Parts Produced by Laser Metal Deposition

Yu, Jun; Rombouts, Marleen; Maes, Gert; Motmans, Filip

doi:10.1016/j.phpro.2012.10.056

Cited by 160 publications

(62 citation statements)

References 13 publications

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“…However, the formation of fine α morphologies in grains predominantly improved the hardness as the formation of α' martensite was lesser towards the top layer. The hardness measurements are in agreement with the hardness of Ti6Al4V parts produced by LMD for thick sections [36].…”

Section: Microhardness Of Lmd Specimensupporting

confidence: 84%

Microstructural and mechanical characterization of Ti6Al4V refurbished parts obtained by laser metal deposition

Raju

Duraiselvam

Petley

et al. 2015

Materials Science and Engineering: A

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Section: Microhardness Of Lmd Specimensupporting

confidence: 84%

Microstructural and mechanical characterization of Ti6Al4V refurbished parts obtained by laser metal deposition

Raju

Duraiselvam

Petley

et al. 2015

Materials Science and Engineering: A

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“…In order to avoid oxidation, the melt pool must be protected from the atmosphere. Thus, LMD is normally conducted in a process chamber filled with inert gas, or under local shielding by an inert gas stream [2].…”

Section: Introductionmentioning

confidence: 99%

Laser Metal Deposition of Ti6Al4V—A Brief Review

et al. 2020

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Laser metal deposition (LMD) is one of the most important laser additive manufacturing processes. It can be used to produce functional coatings, to repair damaged parts and to manufacture metal components. Ti6Al4V is one of the most commonly used titanium alloys, since it features a good balance of the mechanical properties of strength and ductility. The LMD of Ti6Al4V is attracting more and more attention from both science and engineering. The interest in processing Ti6Al4V with LMD in industry, especially in aerospace and medical branches, has been increasing in the last few years. In this paper, the state of the art for LMD of Ti6Al4V is reviewed. In the first part, the basics for Ti6Al4V, including, for example, the development history, the material properties, the applications, the crystal structure, the heat treatment and the mechanical properties, are introduced. In the second part, the main emphasis is on state of the art for LMD of Ti6Al4V. Initially, the process parameters of the current state of the art in the last years and their effects are summarized. After that, the typical microstructure after LMD is discussed. Then, the conducted heat treatment methods and the achievable mechanical properties are presented. In the end, some of the existing, current challenges are mentioned, and the possible research directions for the future are proposed.

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“…There are only a few studies that use the molten pool temperature as one of the influencing factors to analyze the microstructural evolution. Yu et al [20] decreased the heat accumulation effect in the LMD process by monitoring the pool size and temperature, and then varying the laser power in real-time to obtain a uniform Ti6Al4V component. The molten pool temperature should be a more reliable parameter to build the correlation of process-structure-property.…”

Section: Introductionmentioning

confidence: 99%

Influence of Effective Laser Energy on the Structure and Mechanical Properties of Laser Melting Deposited Ti6Al4V Alloy

Zhang

et al. 2020

Materials

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The laser energy density (ED) is often utilized in many additive manufacturing (AM) processes studies to help researchers to further investigate the process-structure-property correlations of Ti6Al4V alloys. However, the reliability of the ED is still questionable. In this work, a specific empirical calculation equation of the effective laser energy (Ee), which is a dimensionless parameter in laser melting deposition (LMD) processing, was proposed based on the molten pool temperature. The linear regression results and the coefficient of determination prove the feasibility of the Ee equation, which indicates that Ee can more accurately reflect the energy-temperature correlations than the commonly used laser energy density (ED) equation. Additionally, Ti6Al4V components were fabricated by the LMD process with different Ee to investigate the influence of Ee on their structure and mechanical properties. Experimental results show that the detrimental columnar prior β meso-structure can be circumvented and the uniform α + β laths micro-structure can be obtained in LMD Ti6Al4V by a judicious combination of the process parameter (P = 2000 W, V = 12 mm/s, and F = 10.5 g/min) and Ee (7.98 × 105) with excellent tensile strength (1006 ± 25 MPa) and elongation (14.9 ± 0.6%). Overall, the present work provides an empirical calculation equation to obtain a clearer understanding of the influence of different process parameters and indicates the possibility to fabricate the Ti6Al4V alloy with excellent mechanical properties by parameter optimization in the LMD process.

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Material Properties of Ti6Al4V Parts Produced by Laser Metal Deposition

Cited by 160 publications

References 13 publications

Microstructural and mechanical characterization of Ti6Al4V refurbished parts obtained by laser metal deposition

Microstructural and mechanical characterization of Ti6Al4V refurbished parts obtained by laser metal deposition

Laser Metal Deposition of Ti6Al4V—A Brief Review

Influence of Effective Laser Energy on the Structure and Mechanical Properties of Laser Melting Deposited Ti6Al4V Alloy

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