Effect of Heat Treatment on Creep Deformation and Fracture Properties for a Coarse-Grained Inconel 718 Manufactured by 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%3AN0000023" target="_blank" >RIV/26316919:_____/23:N0000023 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11320/23:10474189
Result on the web
<a href="https://www.mdpi.com/1996-1944/16/4/1377" target="_blank" >https://www.mdpi.com/1996-1944/16/4/1377</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3390/ma16041377" target="_blank" >10.3390/ma16041377</a>
Alternative languages
Result language
angličtina
Original language name
Effect of Heat Treatment on Creep Deformation and Fracture Properties for a Coarse-Grained Inconel 718 Manufactured by Directed Energy Deposition
Original language description
The creep properties of a laser-directed energy deposition (L-DED) technique manufactured Inconel 718 (IN718) was investigated at 650 degrees C/700 MPa. Microstructure and creep properties of L-DED IN718 samples were tailored by various post heat treatments involving homogenization heat treatment with temperature ranging from 1080 to 1180 degrees C + double aging and hot isostatic pressing (HIP). Microstructural changes and their influence on the creep behavior and fracture mechanism were observed and discussed. The results show that L-DED sample heat treated by a simple double aging exhibits a 49% increase in creep lifetime t(r) and a comparable creep elongation e(f) when compared to the wrought material, due to the reserved coarse dislocation cell substructure from the L-DED process. The loss of dislocation cell structure and the coarsening of grains at higher temperature of heat treatments contributes to a shorter t(r,) epsilon(f), but faster epsilon(min) (minimum creep rate). The present work demonstrates that a simultaneous improvement of creep strength and creep elongation can be achieved in the case of a coarse-grained L-DED IN718 by a double aging treatment which can preserve both the strengthening precipitates and an appropriate size of dislocation cells.
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
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
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
MATERIALS
ISSN
1996-1944
e-ISSN
1996-1944
Volume of the periodical
16
Issue of the periodical within the volume
4
Country of publishing house
CH - SWITZERLAND
Number of pages
12
Pages from-to
nestránkováno
UT code for WoS article
000940704100001
EID of the result in the Scopus database
2-s2.0-85149204370