Microstructural and texture evolution during thermo-hydrogen processing of Ti6Al4V alloys produced by electron beam melting

Doğu, Merve Nur; Esen, Ziya; Davut, Kemal; Tan, Evren; Gümüş, Berkay; Dericioğlu, Arcan F.

doi:10.1016/j.matchar.2020.110549

Cited by 18 publications

(5 citation statements)

References 64 publications

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“…Since controlling texture using the LPBF has proven difficult thus far in these allotropic alloys, some studies have resorted to the use of post processing treatments such as annealing and solution heat treatments to control the extent of variant selection or texture development. [ 85,86 ] The application of these post processing treatments gives the diffusion process enough time and usually results in a randomized crystallographic texture. [ 85,86 ] This is because additively manufactured components exhibit a different recovery and recrystallization behavior compared to the conventionally processed counterparts.…”

Section: Texture Control Via Phase Transformationmentioning

confidence: 99%

“…[ 85,86 ] The application of these post processing treatments gives the diffusion process enough time and usually results in a randomized crystallographic texture. [ 85,86 ] This is because additively manufactured components exhibit a different recovery and recrystallization behavior compared to the conventionally processed counterparts. [ 86 ] For instance, the recrystallization kinetics in LPBFed‐AISI 316 L is sluggish and reported to only commence at higher temperature (>1100

\circ

C).…”

Section: Texture Control Via Phase Transformationmentioning

confidence: 99%

See 1 more Smart Citation

Controlled Crystallographic Texture Orientation in Structural Materials Using the Laser Powder Bed Fusion Process—A Review

Cobbinah,

Matsunaga,

Yamabe-Mitarai

2023

Adv Eng Mater

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Advantages of the laser powder bed fusion (LPBF) process over conventional processing methods include microstructural control capability and complex geometry parts fabrication. For most alloys, the microstructure‐property relationship typically guides the LPBF process toward achieving application‐specific properties. Nonetheless, the LPBF process produces a high degree of anisotropy, primarily from the epitaxial preferred grain growth mechanisms during solidification and the consequent highly textured microstructures produced. The crystallographic texture‐controlled build concept through the LPBF process is a material design and processing approach gaining a lot of interest because of the promising unique and superior properties offered by the anisotropy accompanying the LPBF process. The numerous attempts at intentional texture‐controlled building or parts fabrication from structural materials using the LPBF process warrant an up‐to‐date review. Thus, this review presents solidification mechanisms that influence texture evolution during the LPBF process such as the melting mode, melt pool shape, influence of thermal gradient, and solidification rate. Furthermore, this review delves into the influence of LPBF process parameters on texture, accompanying microstructural evolution, and the intentional control of texture effects on properties such as mechanical, corrosion, and oxidation resistance.This article is protected by copyright. All rights reserved.

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Section: Texture Control Via Phase Transformationmentioning

confidence: 99%

\circ

C).…”

Section: Texture Control Via Phase Transformationmentioning

confidence: 99%

Controlled Crystallographic Texture Orientation in Structural Materials Using the Laser Powder Bed Fusion Process—A Review

Cobbinah,

Matsunaga,

Yamabe-Mitarai

2023

Adv Eng Mater

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“…Ti6Al4V alloy, the most extensively used titanium alloy, is commonly used for the aerospace, biomedical, chemical and automobile industries thanks to its outstanding properties such as high strength-to-weight ratio, excellent biocompatibility, good corrosion resistance, heat treatability and a good balance between mechanical properties and workability [ 1 , 35 , 36 ]. It is produced using the L-PBF technique as well as the conventional techniques.…”

Section: Solidification Microstructure Evolution Within Pbf-lbmentioning

confidence: 99%

“…Metal additive manufacturing (AM) processes build parts layer-by-layer. They provide numerous advantages over conventional manufacturing processes, such as the production of intricate geometries in a single step, along with design freedom, near-zero material waste and cost-efficiency compared to conventional manufacturing techniques [ 1 , 2 ]. One industry that is making increasing use of metal AM is the aerospace industry [ 2 – 5 ] where revenues are expected to be US$430 billion by the year 2025 [ 3 ].…”

Section: Introductionmentioning

confidence: 99%

Digitisation of metal AM for part microstructure and property control

et al. 2022

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Metal additive manufacturing, which uses a layer-by-layer approach to fabricate parts, has many potential advantages over conventional techniques, including the ability to produced complex geometries, fast new design part production, personalised production, have lower cost and produce less material waste. While these advantages make AM an attractive option for industry, determining process parameters which result in specific properties, such as the level of porosity and tensile strength, can be a long and costly endeavour. In this review, the state-of-the-art in the control of part properties in AM is examined, including the effect of microstructure on part properties. The simulation of microstructure formation via numerical simulation and machine learning is examined which can provide process quality control and has the potential to aid in rapid process optimisation via closed loop control. In-situ monitoring of the AM process, is also discussed as a route to enable first time right production in the AM process, along with the hybrid approach of AM fabrication with post-processing steps such as shock peening, heat treatment and rolling. At the end of the paper, an outlook is presented with a view towards potential avenues for further research required in the field of metal AM.

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“…One of the most developed methods of FGM manufacturing is additive manufacturing and physical deposition methods, which allows the fabrication of three-dimensional and twodimensional FGMs [2]. Recently, the issues surrounding the improvement of the physical and mechanical properties of FGMs, including the radiation and hydrogen resistance, have been widely investigated [3][4][5][6][7][8]. The nanoscale multilayer metal systems that are obtained by physical deposition methods are also being actively studied.…”

Section: Introductionmentioning

confidence: 99%

Effect of Proton Irradiation on Zr/Nb Nanoscale Multilayer Structure and Properties

Laptev

Krotkevich

Ломыгин

et al. 2023

Metals

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The effect of proton irradiation on the structure, phase composition, defect state and nanohardness of Zr/Nb nanoscale multilayer coatings was investigated. Preservation of the Zr/Nb layered structure with 50 and 100 nm thick layers, was observed after irradiation with protons at 1720 keV energy and 3.4 × 1015, 8.6 × 1015 and 3.4 × 1016 ions/cm2 fluences, and the interfaces remained incoherent. In the Zr/Nb nanoscale multilayer coatings with individual layer thicknesses of 10 and 25 nm, there were insignificant fluctuations in interplanar distance, which were influenced by changes in irradiation fluence, and the interfaces were partially destroyed and became semicoherent. Changing irradiation fluence in the investigated ranges led to a decrease in the nanohardness of the Zr/Nb nanoscale multilayer coatings with individual layer thicknesses of 10–50 nm. Variable-energy positron Doppler broadening analysis revealed that these changes are primarily caused by peculiarities of the localization and accumulation of the embedded ions and do not cause a significant increase in the S-parameters of Zr/Nb nanoscale multilayer coatings with a layer thickness less than 100 nm.

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Microstructural and texture evolution during thermo-hydrogen processing of Ti6Al4V alloys produced by electron beam melting

Cited by 18 publications

References 64 publications

Controlled Crystallographic Texture Orientation in Structural Materials Using the Laser Powder Bed Fusion Process—A Review

Controlled Crystallographic Texture Orientation in Structural Materials Using the Laser Powder Bed Fusion Process—A Review

Digitisation of metal AM for part microstructure and property control

Effect of Proton Irradiation on Zr/Nb Nanoscale Multilayer Structure and Properties

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