Results 251 to 260 of about 7,970 (297)

Carbon partitioning during quenching and partitioning heat treatment accompanied by carbide precipitation

Acta Materialia, 2015
Abstract Carbon partitioning from martensite into austenite in the quenching and partitioning (Q&P) process has been suggested to be controlled by the constrained carbon equilibrium (CCE) criterion. It defines an approach for predicting the carbon concentration in austenite under the condition that competing reactions such as carbide formation and ...
Goro Miyamoto, D Raabe, Yuki Toji
exaly   +3 more sources

Unambiguous carbon partitioning from martensite to austenite in Fe–C–Ni alloys during quenching and partitioning [PDF]

Scripta Materialia, 2013
International audienceThe mechanism of carbon enrichment in retained austenite during the quenching and partitioning (Q&P) process is still controversial.
Mohamed Goune, O Bouaziz, S Allain
exaly   +2 more sources

On the role of Manganese Partitioning in Metastable Austenite by Quenching and Partitioning Treatment

steel research international, 2023
With the aim to study the role of “frozen” concentration gradient of manganese (Mn) element in stability of retained austenite (RA) with multiple‐stage martensite transformation, a series of intercritical annealing (IA) temperatures is conducted before quenching and partitioning (Q&P) treatment.
Ri-Ming Wu, Yi Xu, Kui-Cen Li, Wei Li
openaire   +1 more source

Quenching and Partitioning of Plate Steels: Partitioning Design Methodology

Metallurgical and Materials Transactions A, 2019
Quenching and partitioning (Q&P), a new heat treatment concept to develop high-strength martensitic microstructures with retained austenite (RA), has been implemented industrially to make sheet products. This process is also of interest for thicker plate products, to employ transformation-induced plasticity to enhance toughness and/or wear resistance ...
R. A. Stewart, J. G. Speer, B. G. Thomas, E. De Moor, A. J. Clarke   +4 more
openaire   +1 more source

Comparison of the Impact Wear Performances of Quenching and Partitioning and Quenching and Tempering Steels

steel research international, 2021
A low‐carbon, high‐strength steel is treated by different quenching and partitioning (QP) and quenching and tempering (QT) routes in a salt bath furnace, and its wear performance is evaluated by impact abrasive wear tests. It is observed as compared with the traditional QT steel; the QP steel manifests better wear performance at the quenching ...
Zhirui Wei, Xiaolong Gan, Man Liu, Junyu Tian, Zhenye Chen, Guang Xu   +5 more
openaire   +1 more source

Study of heat treatment parameters and kinetics of quenching and partitioning cycles [PDF]

Materials Science and Technology, 2015
Cold rolled sheets of a low carbon quenching and partitioning (Q&P) steel grade were subjected to heat treatment cycles, which were designed by dilatometric experiments and optimised with respect to the quenching temperature, partitioning temperature and
R Petrov
exaly   +2 more sources

Quenching and Partitioning: Science and Technology

2013
A lecture given by John Speer, at the Adventures in the Physical Metallurgy of Steels (APMS) conference held in Cambridge University. The quench and partitioning process involves partial transformation to martensite, followed by an increase in temperature to permit the excess carbon to partition into the residual austenite.
Speer, John, Matlock, David, Moor, Emmanuel De, Edmonds, David   +3 more
openaire   +1 more source

Carbon and strain partitioning in a quenched and partitioned steel containing ferrite

Acta Materialia, 2019
Abstract We applied a hot rolling direct quenching and partitioning (HDQ&P) process to a low-C low-Si Al-added steel and obtained a Q&P steel containing 40 vol % of ferrite. Microstructure characterization was performed by means of SEM, EBSD, TEM and XRD.
Xiaodong Tan, Dirk Ponge, Wenjun Lu, Yunbo Xu, Xiaolong Yang, Xi Rao, Di Wu, Dierk Raabe   +7 more
openaire   +2 more sources

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2020
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openaire   +2 more sources