Process window for electron beam melting of Ti–42Nb wt.%; Journal of Materials Research and Technology; Vol. 25

Process window for electron beam melting of Ti–42Nb wt.%; Journal of Materials Research and Technology; Vol. 25

গ্রন্থ-পঞ্জীর বিবরন
Parent link:Journal of Materials Research and Technology.— .— Amsterdam: Elsevier Science Publishing Company Inc.
Vol. 25.— 2023.— P. 4457-4478
অন্যান্য লেখক: Grubova I. Yu. Irina Yurievna, Kozadayeva M. Maria, Volkova A. P. Anastasia Petrovna, Khrapov D. Dmitriy, Surmenev R. A. Roman Anatolievich, Коптюг А. В. Андрей Валентинович, Vladesku A. Alina, Tyurin A. I. Aleksandr Ivanovich, Surmeneva M. A. Maria Alexandrovna
সংক্ষিপ্ত:Title screen
Pre-alloyed β-phase Ti˗42Nb alloy was successfully produced for the first time by E-PBF. The study focuses on the determination of the processing parameter window by varying the beam current, beam speed, layer thickness, and line offset to achieve the defect-free manufacturing of new material with desired properties. Overall, 49 regimes were investigated. The Ti˗42Nb powder were characterized using the DSC/TG, XRD, and SEM/EDX analyses to evaluate its suitability for E-PBF manufacturing. The alloys with the best-built quality fall into the narrow zone between the line energies of 0.30 and 0.34 J/mm. The predicted optimal process parameters were I = 4 mA, v = 700–800 mm/s, h = 100 μm, U = 60 kV, and t = 100 μm. Detailed microstructural characterization was carried out to gain insights into the fundamental mechanisms that govern the behavior of the studied alloys. TEM identified the α'' martensitic phase nucleation occurred preferentially at the β grain boundaries. Un-melted ellipsoidal NbC (∼10 μm) particles were detected with no preferential segregation sites. EBSD revealed coarse microstructures and <001> fiber texture, as well as epitaxial grain growth of columnar grains of about 300 μm. The optimal regime demonstrated a texture composed of a high amount of low aspect ratio grains (50%), which yielded a microindentation hardness of 3.0 GPa and a low elastic modulus of 68 GPa. Hence, these results provide opportunities to design novel alloys to be of interest for biomedical applications. Moreover, this study extends the scope of AM by establishing the process parameter window that yields a material with favorable mechanical properties
Текстовый файл
AM_Agreement
ভাষা:ইংরেজি
প্রকাশিত: 2023
বিষয়গুলি:
Electron beam additive manufacturing
Biomaterials
Beta titanium alloy
Elastic propertiesMicrostructure
электронный ресурс
труды учёных ТПУ
অনলাইন ব্যবহার করুন:https://doi.org/10.1016/j.jmrt.2023.06.234
বিন্যাস: বৈদ্যুতিক গ্রন্থের অধ্যায়
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=684974

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