In-situ formation of Ti-Mo biomaterials by selective laser melting of Ti/Mo and Ti/Mo2C powder mixtures: A comparative study on microstructure, mechanical and wear performance, and thermal mechanisms

Shi, Qimin; Yang, Shoufeng; Sun, Yi; Gu, Yifei; Mercelis, Ben; Zhong, Shengping; Meerbeek, Bart Van; Politis, Constantinus

doi:10.1016/j.jmst.2021.09.017

Cited by 19 publications

(15 citation statements)

References 57 publications

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“…On increasing Mo content to 10%, only beta grains are observed (Figure 3c) which indicates that 10% Mo stabilized the β phase consistent with earlier studies reporting that 10 wt% Mo is sufficient to stabilize the β phase to room temperature. [ 25–27 ] Unlike other studies employing blended elemental AM approaches to prepare Ti–Mo alloys, [ 17 ] there was no remnant elemental Mo detected in the microstructure and the LENS processing facilitated complete melting of the feed powders.…”

Section: Resultsmentioning

confidence: 99%

“…Until now, attempts to fabricate Ti-Mo alloys using additive manufacturing have generally employed selective laser melting (SLM) of either prealloyed powders or blended elemental powders. [16][17][18][19] Recently, cost-effective approaches employing blended elemental powders utilizing methods such as ball milling, simple powder blending, and satellite mixing have been used for AM of Ti-based materials with promising results. [20][21][22] The current work also aims to study the AM of Ti-xMo alloys with 5 and 10 wt% Mo using a low-cost elemental powder blending approach in conjunction with laser engineered net shaping (LENS).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Laser Additive Manufacturing of Low‐Cost Ti–Mo Alloys: Microstructural Evolution, Phase Analysis, and Mechanical Properties

et al. 2022

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Design and fabrication of low‐cost biomedical Ti alloys has recently received considerable attention. Herein, additive manufacturing employing laser engineered net shaping (LENS) is used to fabricate low‐cost Ti–5wt%Mo and Ti–10wt%Mo alloys from mixed elemental powders, and the resulting features are studied and compared with those of LENS‐produced commercially pure Ti (CP‐Ti). Optimization of the processing parameters shows that, on increasing Mo, densification is slightly reduced. Phase analysis and microstructural investigations on the Ti–Mo alloys show strong dependency on the level of Mo additions. CP‐Ti sample exhibits an α phase microstructure with mainly coarse and some fine plate‐like features, whereas addition of 5% Mo results in a mixture of acicular α′ distributed within β phase grains. Addition of 10% Mo stabilizes the β phase, while minor peaks indicating the presence of some ω phase are detected by X‐ray phase analysis. Mechanical characterization reveals that Ti–10%Mo has the lowest elastic modulus due to its dominant β phase structure as well as the highest microhardness and yield strength due to solid‐solution strengthening effects from Mo and the presence of the nanoscale ω phase. However, the presence of the ω phase and the slightly lower densification also reduce the deformation strain in comparison to the Ti–5%Mo and CP‐Ti.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Laser Additive Manufacturing of Low‐Cost Ti–Mo Alloys: Microstructural Evolution, Phase Analysis, and Mechanical Properties

et al. 2022

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“…Moreover, the elastic modulus of the Ti-6Al-4V/10Mo alloy is only 73 GPa, which is significantly lower than that of Ti-6Al-4V alloy (∼110 GPa). Shi et al [120] prepared an LPBF Ti-7.5Mo-2.4TiC composite by adding Mo 2 C particles into pure Ti. Compared with the Ti-7.5Mo alloy, a higher content of β phase was obtained, and undissolved Mo particles were avoided in the Ti-7.5Mo-2.4TiC composite.…”

Section: Isomorphous 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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“…[23,24] In acidic media, due to the hydrogen absorption effect of GNP and GO, the rate of hydrogen reduction reaction can be alleviated, thereby effectively reducing the current density and improving the corrosion resistance of composite materials. [25] Molybdenum is a type of β stabilizers that have extremely high solubility in titanium alloys [26][27][28] and have a significant impact on the microstructure of titanium alloys. Increasing the Mo content in the matrix is beneficial for improving the room temperature plasticity of titanium matrix composites.…”

Section: Doi: 101002/adem202301994mentioning

confidence: 99%

“…Molybdenum is a type of β stabilizers that have extremely high solubility in titanium alloys [ 26–28 ] and have a significant impact on the microstructure of titanium alloys. Increasing the Mo content in the matrix is beneficial for improving the room temperature plasticity of titanium matrix composites.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Performance Study of Titanium‐Based Nanocomposites in Selective Laser Melting: Microstructure Regulation and Optimization of Mechanical Properties

Shi,

Wu,

et al. 2024

Adv Eng Mater

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This study focuses on exploring the application of selective laser melting (SLM) technology in the preparation of titanium‐based nanocomposite materials. By introducing 0.5 wt% graphene oxide (GO) and 7.0% nanomolybdenum (Mo) powder, an attempt is made to improve the microstructure and mechanical properties of titanium alloy materials. The experimental results indicate that the microstructure of the titanium‐based nanocomposite material undergoes significant crystal refinement and phase transition behavior, suggesting a positive role of introducing nanoreinforcing phases in crystal structure regulation. Simultaneously, the introduction of GO significantly improves the thermal conductivity of the material, contributing to more uniform energy transfer and temperature distribution, thereby optimizing the process control of laser melting. In terms of mechanical performance, through microhardness and tensile performance tests, the microhardness of TC4–0.5GO–7Mo increases by ≈30.8% compared with pure TC4. This strengthening effect is primarily attributed to the uniform distribution of GO and Mo powder in the matrix, effectively hindering lattice slip and dislocation movement, enhancing the hardness and tensile properties of the material. Through a comprehensive analysis of microstructure and mechanical properties, not only the mapping relationship between the microstructure and mechanical properties of titanium‐based nanocomposite materials is clarified but also the strengthening mechanism is revealed.

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In-situ formation of Ti-Mo biomaterials by selective laser melting of Ti/Mo and Ti/Mo2C powder mixtures: A comparative study on microstructure, mechanical and wear performance, and thermal mechanisms

Cited by 19 publications

References 57 publications

Laser Additive Manufacturing of Low‐Cost Ti–Mo Alloys: Microstructural Evolution, Phase Analysis, and Mechanical Properties

Laser Additive Manufacturing of Low‐Cost Ti–Mo Alloys: Microstructural Evolution, Phase Analysis, and Mechanical Properties

Recent innovations in laser additive manufacturing of titanium alloys

Preparation and Performance Study of Titanium‐Based Nanocomposites in Selective Laser Melting: Microstructure Regulation and Optimization of Mechanical Properties

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