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Benefits of Intercritical Annealing in Quenching and Partitioning Steel
Metallurgical and Materials Transactions A, 2018Compared to the quenching and partitioning (Q&P) steel produced by full austenization annealing, the Q&P steel produced by the intercritical annealing shows a similar ultimate tensile stress but a larger tensile ductility. This property is attributable to the higher volume fraction and the better mechanical stability of the retained austenite after the
X. Wang, L. Liu, R. D. Liu, M. X. Huang
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Morphology and crystallography of austenite formed during intercritical annealing
Metal Science, 1984AbstractThe formation of austenite during intercritical annealing of ferrite–spheroidized cementite and ferrite–pearlite microstructures in low carbon steels has been investigated. It has been established that austenite which nucleates at a ferrite grain boundary does so with a Kurdjumov–Sachs crystallographic orientation relationship with one or both ...
U. R. Lenel, R. W. K. Honeycombe
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Thermodynamic Characterization in Intercritical Annealing Process for Dual-Phases Steels
Advanced Materials Research, 2012The theoretical prediction of chemical composition, the range of main elements and austenite alteration affected by intercritical annealing temperature were conducted by thermodynamic calculations, which agree with the experimental results. When fixing carbon content at 0.1% and calculating temperature at 1000K, to achieve α+γ phases without cementite ...
Fang Fang +3 more
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Microstructural characterization and impact toughness of intercritically annealed PM steels
Materials Science and Engineering: A, 2005Abstract In this study, atomized iron powder (Ancorsteel 1000) was mixed with 0.3 and 0.5 wt.% graphite powder. After sintering at 1120 °C, coarse and fine ferrite and martensite (dual phase) microstructures were produced through intercritical annealing heat treatment at different temperatures.
Tekeli, SÜLEYMAN, Gural, AHMET
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2023
This study systematically investigates the microstructural characteristics of Dual-Phase (DP) steels as a function of varied intercritical annealing conditions. The influence of specific intercritical annealing temperatures, holding times, and subsequent cooling rates on the formation, morphology, and distribution of ferrite and martensite phases in DP
Dr. Vasudendra H K, Dr. Alistair Finch
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This study systematically investigates the microstructural characteristics of Dual-Phase (DP) steels as a function of varied intercritical annealing conditions. The influence of specific intercritical annealing temperatures, holding times, and subsequent cooling rates on the formation, morphology, and distribution of ferrite and martensite phases in DP
Dr. Vasudendra H K, Dr. Alistair Finch
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Effect of Annealing Temperature on Martensite Start Temperature in Intercritical Region
2015In dual-phase steels, partial austenization may result in different volume amount of austenite depending on intercritical annealing temperature between Ac1 and Ac3 temperatures. The annealing temperature is also responsible of chemical composition and grain size of austenite. This study deals with the effect of intercritical annealing temperature on Ms
ERİŞİR, ERSOY, BİLİR, OĞUZ GÜRKAN
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Microstructure and mechanical properties of medium manganese steel in intercritical annealing
Materials Science and Technology, 2023A new type of cold-rolled medium manganese steel was investigated. The test steel was treated by Q&P process. With the increase in annealing temperature, the grain size gradually increases, the carbides dissolve progressively and the fine lath grains transform into massive or equiaxed grains.
Yan Feng +5 more
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Formation of Austenite During Intercritical Annealing of Dual-Phase Steels
Metallurgical Transactions A, 1981The formation of austenite during intercritical annealing at temperatures between 740 and 900 °C was studied in a series of 1.5 pct manganese steels containing 0.06 to 0.20 pct carbon and with a ferrite-pearlite starting microstructure, typical of most dual-phase steels.
G. R. Speich +2 more
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Development of textures during rapid intercritical annealing of deep drawing steels
Materials Science and Technology, 1989Abstract It is still possible to optimise the newly developed continuous annealing process for sheet steel production with respect to the properties of the product. In the present contribution, the development of the texture under continuous annealing conditions (very rapid heating, short annealing time, and high annealing temperatures of intercritical
F. Emren, U.V. Schlippenbach, K. Lücke
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Formation of austenite from a ferrite-pearlite microstructure during intercritical annealing
Journal of Materials Science, 1985The formation of austenite from a coarse grained ferrite-pearlite microstructure during intercritical annealing was studied. According to the variation of the microhardness values in ferrite and austenite with intercritical annealing time, austenite formation was classified into four stages: (a) austenite growth into pearlite at a slower rate than the ...
Woo Chang Jeong, Chong Hee Kim
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