Low-temperature precipitation strengthening of maraging steel 1.2709 produced by powder bed fusion
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23210%2F24%3A43971839" target="_blank" >RIV/49777513:23210/24:43971839 - isvavai.cz</a>
Alternative codes found
RIV/49777513:23640/24:43971839
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0264127524003125?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0264127524003125?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.matdes.2024.112938" target="_blank" >10.1016/j.matdes.2024.112938</a>
Alternative languages
Result language
angličtina
Original language name
Low-temperature precipitation strengthening of maraging steel 1.2709 produced by powder bed fusion
Original language description
Research into precipitation hardening in additively manufactured (AM) maraging steel is mainly conducted on the material after several hours of holding at the peak hardening temperatures of 450-500 °C. Lower temperatures are expected to have little to no effect on mechanical properties even after very long holds at these temperatures. This article, however, demonstrates that new precipitates grow and cause a noticeable hardening effect in solution-annealed AM maraging steel after only a 6-hour hold at a temperature of 350 °C. High-resolution scanning and transmission electron microscopy (HRSEM, HRTEM) was used to identify the new precipitates. Very fine coherent microdomains containing mainly nickel and molybdenum layers were found. Particles of a new phase, Al0.5CNi3Ti0.5, were also detected. Additionally, various precipitates were also found in both the as-built and the AM solution-annealed maraging steel samples. Precipitates such as Ni3Ti, Al0.3Ni0.35Ti0.35 and Al2O5Ti, were also observed in the as-built condition. After subsequent solution annealing at 820 °C additional Ni3Mo particles and another type of Ti-rich particles, Ni4Ti3, were further found in the AM steel microstructure. The additional new phases which precipitated during the final hardening at 350 °C caused an 18% (200 MPa) increase in strength.
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
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Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Materials & Design
ISSN
0264-1275
e-ISSN
1873-4197
Volume of the periodical
241
Issue of the periodical within the volume
May 2024
Country of publishing house
GB - UNITED KINGDOM
Number of pages
14
Pages from-to
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UT code for WoS article
001230650300001
EID of the result in the Scopus database
2-s2.0-85190247752