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Effect of intercritical annealing on the microstructure and mechanical properties of 0.1C-13Cr-3Ni martensitic stainless steel
ID
Burja, Jaka
(
Avtor
),
ID
Šuler, Blaž
(
Avtor
),
ID
Češnjaj, Marko
(
Avtor
),
ID
Nagode, Aleš
(
Avtor
)
PDF - Predstavitvena datoteka,
prenos
(12,23 MB)
MD5: EB85EA6A879EB7B7C56C17EA407A3554
URL - Izvorni URL, za dostop obiščite
https://www.mdpi.com/2075-4701/11/3/392
Galerija slik
Izvleček
Standard heat treatment of martensitic stainless steel consists of quenching and tempering. However, this results in high strength and hardness, while Charpy impact toughness shows lower values and a large deviation in its values. Therefore, a modified heat treatment of 0.1C-13Cr-3Ni martensitic stainless steel (PK993/1CH13N3) with intercritical annealing between Ac1 and Ac3 was introduced before tempering to study its effect on the microstructure and mechanical properties (yield strength, tensile strength, hardness and Charpy impact toughness). The temperatures of intercritical annealing were 740, 760, 780 and 800 °C. ThermoCalc was used for thermodynamic calculations. Microstructure characterization was performed on an optical and scanning electron microscope, while XRD was used for the determination of retained austenite. Results show that intercritical annealing improves impact toughness and lowers deviation of its values. This can be attributed to the dissolution of the thin carbide film along prior austenite grain boundaries and prevention of its re-occurrence during tempering. On the other hand, lower carbon concentration in martensite that was quenching from the intercritical region resulted in lower strength and hardness. Intercritical annealing refines the martensitic microstructure creating a lamellar morphology.
Jezik:
Angleški jezik
Ključne besede:
martensite
,
stainless steel
,
intercritical annealing
,
impact toughness
,
mechanical properties
Vrsta gradiva:
Članek v reviji
Tipologija:
1.01 - Izvirni znanstveni članek
Organizacija:
NTF - Naravoslovnotehniška fakulteta
Status publikacije:
Objavljeno
Različica publikacije:
Objavljena publikacija
Leto izida:
2021
Št. strani:
16 str.
Številčenje:
Vol. 11, iss. 3, art. 392
PID:
20.500.12556/RUL-135008
UDK:
620.1/.2
ISSN pri članku:
2075-4701
DOI:
10.3390/met11030392
COBISS.SI-ID:
53500163
Datum objave v RUL:
17.02.2022
Število ogledov:
1281
Število prenosov:
144
Metapodatki:
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Objavi na:
Gradivo je del revije
Naslov:
Metals
Skrajšan naslov:
Metals
Založnik:
MDPI AG
ISSN:
2075-4701
COBISS.SI-ID:
15976214
Licence
Licenca:
CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
Povezava:
http://creativecommons.org/licenses/by/4.0/deed.sl
Opis:
To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
Začetek licenciranja:
01.03.2021
Projekti
Financer:
ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:
P2-0050
Naslov:
Kovinski materiali in tehnologije
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