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
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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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