TY - JOUR
T1 - An In Situ Synchrotron Dilatometry and Atomistic Study of Martensite and Carbide Formation during Partitioning and Tempering
AU - Plesiutschnig, Ernst
AU - Albu, Mihaela
AU - Canelo Yubero, David
AU - Razumovskiy, V.
AU - Stark, Andreas
AU - Schell, Norbert
AU - Kothleitner, Gerald
AU - Beal, Coline
AU - Sommitsch, Christof
AU - Hofer, Ferdinand
PY - 2021/7/2
Y1 - 2021/7/2
N2 - Precipitation hardened and tempered martensitic-ferritic steels (TMFSs) are used in many areas of our daily lives as tools, components in power generation industries, or in the oil and gas (O&G) industry for creep and corrosion resistance. In addition to the metallurgical and forging processes, the unique properties of the materials in service are determined by the quality heat treatment (HT). By performing a quenching and partitioning HT during an in situ high energy synchrotron radiation experiment in a dilatometer, the evolution of retained austenite, martensite laths, dislocations, and carbides was characterized in detail. Atomic-scale studies on a specimen with the same HT subjected to a laser scanning confocal microscope show how dislocations facilitate cloud formation around carbides. These clouds have a discrete build-up, and thermodynamic calculations and density functional theory explain their stability.
AB - Precipitation hardened and tempered martensitic-ferritic steels (TMFSs) are used in many areas of our daily lives as tools, components in power generation industries, or in the oil and gas (O&G) industry for creep and corrosion resistance. In addition to the metallurgical and forging processes, the unique properties of the materials in service are determined by the quality heat treatment (HT). By performing a quenching and partitioning HT during an in situ high energy synchrotron radiation experiment in a dilatometer, the evolution of retained austenite, martensite laths, dislocations, and carbides was characterized in detail. Atomic-scale studies on a specimen with the same HT subjected to a laser scanning confocal microscope show how dislocations facilitate cloud formation around carbides. These clouds have a discrete build-up, and thermodynamic calculations and density functional theory explain their stability.
KW - stainless steel; quenching and partitioning heat treatment; martensite; reconstructive ferrite; carbide formation; partitioning and tempering; high-resolution transmission electron microscopy; atomistic study; density functional theory; in-situ synchrotro
KW - Carbide formation
KW - In-situ synchrotron study
KW - High-resolution transmission electron microscopy
KW - Stainless steel
KW - Partitioning and tempering
KW - Density functional theory
KW - Reconstructive ferrite
KW - Atomistic study
KW - Martensite
KW - Quenching and partitioning heat treatment
UR - http://www.scopus.com/inward/record.url?scp=85110686436&partnerID=8YFLogxK
U2 - 10.3390/ma14143849
DO - 10.3390/ma14143849
M3 - Article
SN - 1996-1944
VL - 14
JO - Materials
JF - Materials
IS - 14
M1 - 3849
ER -