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Microstructure evolution in compositionally graded Ti(4–12 wt% Mo) prepared by laser directed energy deposition

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26316919%3A_____%2F23%3AN0000037" target="_blank" >RIV/26316919:_____/23:N0000037 - isvavai.cz</a>

  • Alternative codes found

    RIV/00216208:11320/23:10474588

  • Result on the web

    <a href="https://www.sciencedirect.com/science/article/pii/S2238785423002181" target="_blank" >https://www.sciencedirect.com/science/article/pii/S2238785423002181</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1016/j.jmrt.2023.01.215" target="_blank" >10.1016/j.jmrt.2023.01.215</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Microstructure evolution in compositionally graded Ti(4–12 wt% Mo) prepared by laser directed energy deposition

  • Original language description

    Compositionally graded Ti(4-12 wt% Mo) alloys were successfully prepared by laser directed energy deposition (L-DED) using two hoppers from Ti and Ti-15Mo master alloy powders. Detailed SEM, EDS and XRD analysis reveals the variation of the microstructure and consequently explains the evolution of the microhardness with the Mo concentration. High laser power is required to dissolve Ti-15Mo particles, to improve the homogeneity of the material at the scale of particle size, and to achieve a smooth linear gradient of the chemical composition. In the bottom part of the samples, the microstructure consists of elongated beta grains of the length of several mm containing big a-Ti laths. With increasing Mo concentration, the volume fraction of a phase decreases. Starting from the composition of about 9 wt% Mo the presence of u phase was detected. Microhardness values span over a wide range of 270-550 HV and are affected by phase composition. The highest values of microhardness are achieved at around 10 wt% of Mo. However, phase composition and microhardness depend also on the utilized laser power and position in the sample deter-mining the cooling rates. L-DED is capable of producing functionally graded materials (FGM) on the basis of metastable b-Ti alloys providing large variations of mechanical properties within a single sample/product. (c) 2023 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    20501 - Materials engineering

Result continuities

  • Project

    <a href="/en/project/GA21-14030S" target="_blank" >GA21-14030S: Compositionally graded complex concentrated alloys (CCA) prepared by additive manufacturing</a><br>

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Others

  • Publication year

    2023

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T

  • ISSN

    2238-7854

  • e-ISSN

    2214-0697

  • Volume of the periodical

    23

  • Issue of the periodical within the volume

    MAR-APR 2023

  • Country of publishing house

    NL - THE KINGDOM OF THE NETHERLANDS

  • Number of pages

    11

  • Pages from-to

    4527-4537

  • UT code for WoS article

    000964243700001

  • EID of the result in the Scopus database

    2-s2.0-85149740806