Application of quenching–partitioning–tempering process and modification to a newly designed ultrahigh carbon steel

Liu, S.G.; Dong, Song; Yang, Fan; Li, L.; Hu, Bin; Xiao, Feng; Chen, Qing; Liu, H.S.

doi:10.1016/j.matdes.2013.10.094

Cited by 41 publications

(8 citation statements)

References 32 publications

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“…A quenching-partitioning-tempering (Q-P-T) process has been proposed to modify the Q&P technology of steels by Rong et al, [16][17][18][19] and this can further raise the strength of these steels by precipitation strengthening while maintaining adequate ductility. Wang et al 20 and Liu et al 21 reported that the impact abrasive wear resistances of medium carbon (0.2 wt%) 20 and ultrahigh carbon (1.43 wt%) 21 Q-P-T martensitic steels were always superior to that of a quenching-tempering steel, due to the workhardening of the matrix and deformation transformation strengthening of the retained austenite during abrasion.…”

Section: Introductionmentioning

confidence: 99%

Effect of retained austenite on wear resistance of nanostructured dual phase steels

Hodgson

2016

Materials Science and Technology

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Nanostructured super bainitic and quenching–partitioning (Q&P) martensitic steels with a significant amount of retained austenite obtained by low temperature bainitic transformation and Q&P respectively were studied to explore the effect of retained austenite on stirring wear resistance. The results suggest that the Q&P martensitic steel significantly enhanced the hardness of the worn surface (from 674 to 762 HV1) and increased the thickness of the deformed layer (∼3.3 μm), compared to the nanostructured bainitic steel. The underlying reason is that the Q&P martensitic steel has a higher stability of retained austenite thereby providing a superior transformation induced plasticity effect to increase surface hardness and reduce wear rate during the wear process.

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Section: Introductionmentioning

confidence: 99%

Effect of retained austenite on wear resistance of nanostructured dual phase steels

Hodgson

2016

Materials Science and Technology

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“…All these heat treatments provide some austenite stabilizing elements an opportunity to segregate into austenite grains, enhancing the austenite stability and retaining some or all austenite grains formed at high temperature at room temperature without decomposition. For instance, carbon is enriched into untransformed austenite during the partitioning process in Si-Mn TRIP-assisted, dual phase steels and even low alloy steel [1,[14][15][16][17][18][19], and carbon and nickel segregate into reversed austenite during larmellarization of 9Ni cryogenic steel [4,5]. In the modest tempering heat treatment, carbon enrichment in austenite was observed clearly by atom probe tomography (APT) and correlative transmission electron microscopy (TEM) in a welldesigned model steel [7,9,20].…”

Section: Introductionmentioning

confidence: 99%

Investigation of the evolution of retained austenite in Fe–13%Cr–4%Ni martensitic stainless steel during intercritical tempering

Zhang

Wang

et al. 2015

Materials & Design

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“…The hypoeutectic of cast iron has crystallization characteristics including the first branched austenitic branches, then the M 7 C 3 crystalline branch, these crystals are between the branches and form the cubic of crystal. As the size of crystal's cubic is increased, the crystallization of the crystalline heat increased, coursing the carbide of particles in the boundary area, which affected the toughness and abrasion resistance of high chromium cast iron [8]. Therefore, to improve the lifespan of the hypoeutectic and eutectic white of high cast iron, people often find ways to reduce the size of the crystal, smoothing the carbide elements in the cubic of crystal.…”

Section: Introductionmentioning

confidence: 99%

Effect of Rare Earth on M7C3 Eutectic Carbide in 13% Chromium Alloy Cast Iron

Quyen

Tuấn²,

Dong³

et al. 2019

Int. J. Adv. Sci. Eng. Inf. Technol.

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The crystallization process of hypoeutectic white cast iron consists of the first secreted austenite branch after the reaction of the austenite -carbide crystal is formed, and the phase crystal fills in the middle of the austenite branches. If the austenite branches are small and smooth, the crystals carbide are fine. The cast iron with 13% chromium which has 3 -3.2% carbon, have the carbide crystalline as M 7 C 3 . The elements in rare earth have a strong affinity for oxygen and sulfur to produce rare earth oxides. These rare earth oxides can create heterogeneous germ center for austenite phases and smooth down these phases. The effect of rare earth on the M 7 C 3 and crystals of 13% chrome white iron has been elucidated. Along with the increase of rare earth content, the microstructure of M 7 C 3 with fine finely graded, more uniformly distributed, dispersed throughout the sample surface. When the carbide is fine and dispersion, will contribute to improving the properties of cast iron especially the impact strength as well as the abrasion resistance of the alloy. The research results show that in the presence of rare earth, rare earth elements created with oxygen and form La 2 O 3 and Ce2O3 as the nucleation for the solidification process and create the small fineness of phases. The orientation of the crystal structure of these oxides is similar to the crystal structure orientation of Fe-γ phase. Finding and proving the oxides of rare earth has crystal structure with phase γ which will be small smooth exogenous minds that the microstructure has a smooth, small size.

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Application of quenching–partitioning–tempering process and modification to a newly designed ultrahigh carbon steel

Cited by 41 publications

References 32 publications

Effect of retained austenite on wear resistance of nanostructured dual phase steels

Effect of retained austenite on wear resistance of nanostructured dual phase steels

Investigation of the evolution of retained austenite in Fe–13%Cr–4%Ni martensitic stainless steel during intercritical tempering

Effect of Rare Earth on M7C3 Eutectic Carbide in 13% Chromium Alloy Cast Iron

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