Development of Mechanical Properties of Stainless Steel 316LN-IG after Cryo-Plastic Deformation

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26316919%3A_____%2F23%3AN0000052" target="_blank" >RIV/26316919:_____/23:N0000052 - isvavai.cz</a>
Alternative codes found
RIV/26722445:_____/23:N0000038
Result on the web
<a href="https://www.mdpi.com/1996-1944/16/19/6473" target="_blank" >https://www.mdpi.com/1996-1944/16/19/6473</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3390/ma16196473" target="_blank" >10.3390/ma16196473</a>

Result language
angličtina
Original language name
Development of Mechanical Properties of Stainless Steel 316LN-IG after Cryo-Plastic Deformation
Original language description
The article deals with increasing the mechanical properties of stainless steel 316 Ln-IG, which is intended for work in cryogenic temperatures (liquid nitrogen and liquid helium), such as conductor conduits for the ITER magnet system. The strength and plastic properties were increased by a combination of cold and cryo-rolling and heat treatment. The mechanical properties of rolled material were investigated at 293 K, 77 K, and 4.2 K. The work-hardening rate of the steel increased continuously with a lowering of the temperature. The maximum yield strength and ultimate tensile strength were achieved by the cryo-rolling process with a total thickness deformation of 50%. The material properties tested at ambient temperature were 0.2YS = 1050 MPa, UTS = 1200 MPa, and at 4.2 K, the values were 0.2YS = 1804 MPa and UTS = 2081 MPa. Two types of long-term heat treatment were applied after experimental rolling (823 K and 1093 K for 10 h). The highest precipitation hardening of steel was achieved at a temperature of 823 K after 50% deformation. The resulting grain size decreased from the initial 216 mu m (before the rolling process) to 70 mu m after ambient rolling and 72 mu m after cryo-rolling.
Czech name
—
Czech description
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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

Project
<a href="/en/project/LM2023041" target="_blank" >LM2023041: Czech International Centre of Research Reactors</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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