Structure and Properties of a High-Chromium Steel of Martensitic Class after Heat Treatment

Abstract The paper presents the results of studies on the development of manufacturing technologies to cast hearth plates operating in chamber furnaces for heat treatment. Castings made from the heat-resistant G-X40CrNiSi27-4 steel were poured in hand-made green sand molds. The following operations were performed: computer simulation to predict the distribution of internal defects in castings produced by the above mentioned technology with risers bare and coated with exothermic and insulating sleeves, analysis of each variant of the technology, and manufacture of experimental castings. As a result of the conducted studies and analysis it was found that the use of risers with exothermic sleeves does not affect to a significant degree the quality of the produced castings of hearth plates, but it significantly improves the metal yield.

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Surface structure and properties of high-chromium steel irradiated with a submillisecond pulsed electron beam

Journal of Physics Conference Series ◽

10.1088/1742-6596/1115/3/032064 ◽

2018 ◽

Vol 1115 ◽

pp. 032064

Author(s):

M S Vorobyov ◽

Yu F Ivanov ◽

Yu H Akhmadeev ◽

P V Moskvin ◽

E A Petrikova ◽

...

Keyword(s):

Electron Beam ◽

Surface Structure ◽

Chromium Steel ◽

Structure And Properties ◽

High Chromium ◽

Pulsed Electron Beam

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Influence of Heat Treatment on the Microstructure of a High Chromium Steel Used for the Manufacture of Rolling Rolls

Materials Science Forum ◽

10.4028/www.scientific.net/msf.638-642.3099 ◽

2010 ◽

Vol 638-642 ◽

pp. 3099-3104 ◽

Cited By ~ 2

Author(s):

Ines Fernández Pariente ◽

J.Manuel Artimez ◽

F.Javier Belzunce ◽

Cristina Rodríguez

Keyword(s):

Heat Treatment ◽

Wear Resistance ◽

High Hardness ◽

Chromium Steel ◽

High Chromium ◽

Austenite Content ◽

Treatment Optimisation ◽

Maintenance Time

The aim of this work was the study of the heat treatment optimisation of high chrome steels used for the manufacture of rolling rolls in order to obtain a final product with a high hardness and wear resistance and taking into account the very large dimensions typical of these products. The effect of modifying the maintenance temperature and time during the different phases of the heat treatment on the microstructure and hardness of this product was evaluated. The necessity of adjusting the temperature and maintenance time of the quenching heat treatment in order to obtain a martensitic/bainitic matrix with a low austenite content followed by two tempering treatments was demonstrated as the best way to obtain the optimal properties of the product for this particular application.

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Observation of Furnace-Induction Quenched Microstructure in High Carbon High Chromium Steel

Materials Science Forum ◽

10.4028/www.scientific.net/msf.904.36 ◽

2017 ◽

Vol 904 ◽

pp. 36-39 ◽

Cited By ~ 1

Author(s):

Koshiro Mizobe ◽

Kohei Egawa ◽

Katsuyuki Kida

Keyword(s):

Heat Treatment ◽

Induction Heating ◽

Mass Production ◽

Treatment Method ◽

Chromium Steel ◽

The Other ◽

Material Structure ◽

High Carbon ◽

High Chromium ◽

Heat Treatment Method

There are two major heating methods used in industrial situations. One is furnace heating which is popular for mass production as it hardens the steel uniformly. The other is induction heating which is energy saving but hardens the steel unevenly. We developed a combined heat treatment method, furnace-induction heating (FIH), and observed the material structure using picral and nital etching.

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On the Application of Magnetoacoustic Emission for a Nondestructive Assessment of the Post Welding Heat Treatment of High Chromium Steel Weld Seams

Journal of Nondestructive Evaluation ◽

10.1007/s10921-021-00770-0 ◽

2021 ◽

Vol 40 (2) ◽

Author(s):

L. Piotrowski ◽

M. Chmielewski ◽

G. Golański ◽

K. Wojsyk

Keyword(s):

Heat Treatment ◽

Annealing Time ◽

Signal Intensity ◽

Chromium Steel ◽

Post Weld Heat Treatment ◽

Steel Weld ◽

High Chromium ◽

Magnetoacoustic Emission ◽

Heat Treated ◽

Weld Seams

AbstractThe paper analyses the possibility of post weld heat treatment (PWHT) quality assessment with the help of magnetoacoustic emission (MAE) signal measurements. Two welded superheater tubes, made of high chromium VM12 steel, were analysed—as welded and heat treated one. The analysed sample in the as welded state exhibited significantly higher hardness, accompanied by a big difference in the MAE signal intensity (of order of about 50%). In order to explain that, the influence of tempering on the MAE signal intensity is demonstrated for the very similar X20CrMoV12.1 steel. It is shown that the observed increase of the MAE intensity as a function of annealing time is directly correlated with the change in hardness. The as described dependence allows to propose a method based on the MAE signal measurements as a new tool for the PWHT assessment.

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