Hot Corrosion of Ti–Re Alloys Fabricated by Selective Laser Melting

Majchrowicz, Kamil; Pakieła, Zbigniew; Moszczyńska, Dorota; Kurzynowski, Tomasz; Chlebus, Edward

doi:10.1007/s11085-017-9825-2

Cited by 13 publications

(7 citation statements)

References 46 publications

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“…The investigations related to the corrosion of AM-prepared Ti alloys reviewed in this work are summarized in Table 6. [68][69]84,[113][114][115][116][117][118][119][120][121][122][123][124][125][126][127][128][129][130][131][132] The work performed by Dai, et al, 84,113 analyzes the corrosion characteristics of Ti6Al4V alloys produced by SLM in different chloride-containing media. The authors evaluated the corrosion of SLM Ti6Al4V by altering exposed planes to different electrolytes 84 and by post-build heat treatments.…”

Section: Titanium Alloysmentioning

confidence: 99%

“…The SLM Ti-TiB composite was compared to commercially pure Ti for corrosion performance in Hank's solution by Chen, et al 129 The presence of TiB phase facilitated the oxide layer deposition on the SLM Ti-TiB surface, which reduced the average i corr from 0.75 μA/cm 2 to 0.22 μA/cm 2 and increased the E pit from 0.70 V SCE to 1.23 V SCE . Hot corrosion of SLM Ti-Re was investigated by Majchrowicz, et al, 130 as function of rhenium (Re) content in a 75% Na 2 SO 4 /25% NaCl salt mix. Corrosion of SLM Ti-Re did not follow any trends with the increase of Re content.…”

Section: Titanium Alloysmentioning

confidence: 99%

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Corrosion of Additively Manufactured Alloys: A Review

et al. 2018

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Additive manufacturing (AM), often termed 3D printing, has recently emerged as a mainstream means of producing metallic components from a variety of metallic alloys. The numerous benefits of AM include net shape manufacturing, efficient use of material, suitability to low volume production runs, and the ability to explore alloy compositions not previously accessible to conventional casting. The process of AM, which is nominally performed using laser (or electron) based local melting, has a definitive role in the resultant alloy microstructure. Herein, the corrosion of alloys prepared by AM using laser and electronbased methods, relating the corrosion performance to the microstructural features influenced by AM processing, are reviewed. Such features include unique porosity, grain structures, dislocation networks, residual stress, solute segregation, and surface roughness. Correlations between reported results and deficiencies in present understanding are highlighted.

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Section: Titanium Alloysmentioning

confidence: 99%

Section: Titanium Alloysmentioning

confidence: 99%

Corrosion of Additively Manufactured Alloys: A Review

et al. 2018

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“…Besides, Re is a β-isomorphous element with a hexagonal close-packed (HCP) lattice structure, which is known for improving the mechanical strength, recrystallization temperature and corrosion resistance of Ti alloys [86,102]. Chlebus et al [86] showed that 1.5 at% Re addition brings a significant strengthening effect to an LPBF-built Ti-Re alloy.…”

Section: Other Lam-based (α + β)-Ti Alloysmentioning

confidence: 99%

“…However, Re addition deteriorates the fatigue crack propagation resistance of CP-Ti due to the reduced ductility [103]. Majchrowicz et al [102] investigated the hot corrosion behaviour of LPBF Ti-xRe (x = 0, 2, 4 and 6 wt%) alloys in a mixed Na 2 SO 4 and NaCl salts at 600 • C. They reported that complete Re particle dissolution is essential to enhance the hot corrosion resistance of LPBF Ti-Re alloy.…”

Section: Other Lam-based (α + β)-Ti Alloysmentioning

confidence: 99%

Recent innovations in laser additive manufacturing of titanium alloys

Su,

Jiang,

Teng

et al. 2024

Int. J. Extrem. Manuf.

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Titanium (Ti) alloys are widely used in frontier fields like aerospace and biomedical engineering. Laser additive manufacturing (LAM), as an innovative technology, is the key driver for the development of Ti alloys. Despite the significant advancements in LAM of Ti alloys, there remain challenges that need further research and development efforts. To recap the potential of LAM high-performance Ti alloy, this article systematically reviews LAM Ti alloys with up-to-date information on process, materials, and properties. Several feasible solutions to advance LAM Ti alloys were reviewed, including intelligent process parameters optimization, LAM process innovation with auxiliary fields and novel Ti alloys customization for LAM. The auxiliary energy fields (e.g., thermal, acoustic, mechanical deformation and magnetic fields) that can be applied during LAM Ti alloys affect the melt pool dynamics and solidification behaviour, altering microstructures and mechanical performances. Different kinds of novel Ti alloys customized for LAM, like peritectic α-Ti, eutectoid (α+β)-Ti, hybrid (α+β)-Ti, isomorphous β-Ti and eutectic β-Ti alloys are reviewed in detail. Furthermore, machine learning in accelerating the LAM process optimization and new materials development is also outlooked. The review summarizes the material properties and performance envelops and benchmarks the research achievements in LAM of Ti alloys. In addition, the perspectives and further trends in LAM of Ti alloys are also highlighted.

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“…The presence of this alcohol is interesting due to the statement of a theoretical study that rhenium can electrooxidize methanol by the bifunctional mechanism (32), without experimental comparisons. Rhenium is resistant to seawater corrosion and this metal has slow corrosion reaction in hydrogen and inert atmospheres at elevated temperatures (33). In addition, soluble oxide increased the corrosion resistance in the mild steel A537 (14).…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Study of Metallic Rhenium in Methanol Acidic Aqueous Solutions

Orozco¹,

Rivera²

2022

ECS Trans.

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Cyclic voltammograms were performed in a window potential from -0.4 to 1.6 V, in solutions of a) H2SO4 0.5M, b) CH3OH 2 M + 0.5 M, c) HCl 0.145 M, d) CH3OH 2 M + HCl 0.145 M. In the sweeps towards anodic direction a soluble oxide is formed at potential superior to 1 V, which is electrodeposited in the sweeps towards cathodic direction. The electrodeposited surface is formed by Re(I) and Re(0) and anodic peaks (0.47 V and 0.71 V vs SHE) correspond to the formation of higher oxidation states (Re(I)→Re(II)→Re(VI)). Methanol affects the structure of anodic peaks separately of the presence of ions chlorides or sulfates. In both acids the soluble oxide is formed and also this specie is produced in sulfuric acid solutions with methanol. Contrariwise, in hydrochloric acid solutions with methanol the perrhenate is the predominant specie. We suggest new hydrogen bonding structures in this solution. Furthermore, we propose a new bonding structure when methanol is dissolve in sulfuric acid or hydrochloric acid solutions. This specie produces bands at 317 nm or 321 nm in the UV-visible spectra of soluble oxide. The high corrosion of metallic rhenium impedes its use as an anode for methanol electrooxidation

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Hot Corrosion of Ti–Re Alloys Fabricated by Selective Laser Melting

Cited by 13 publications

References 46 publications

Corrosion of Additively Manufactured Alloys: A Review

Corrosion of Additively Manufactured Alloys: A Review

Recent innovations in laser additive manufacturing of titanium alloys

Electrochemical Study of Metallic Rhenium in Methanol Acidic Aqueous Solutions

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