Thermal Strengthening of Large Parts Made from High-Strength Sparingly Doped Steel in Air

Майсурадзе, М. В.; Yudin, Yu.V.; Лебедев, Д. И.

doi:10.3103/s0967091220050083

Cited by 6 publications

(1 citation statement)

References 15 publications

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“…The majority of the high strength steels for mining application possesses the great hardenability [1…3]. This is due to the fact, that the massive or long parts (for example, drilling tools, tubes, rods) are usually hardened using the air cooling to reduce the costs of the technological process and to eliminate the additional heat treatment equipment and materials (the large quenching tanks demand large amount of the quenching media) [4,5]. To increase the hardenability of the steel the alloying elements must be introduced to the steel composition, since almost all of them can fulfill this requirement [6…11].…”

Section: Introductionmentioning

confidence: 99%

Phase Transformations and Microstructure of the Alloyed Steels for Mining Application

Майсурадзе

Рыжков

Zhilyakov

2021

DDF

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The dilatometer study of the austenite transformations in steels with different chemical composition was conducted. The studied steels were classified as the air hardened steels of different alloying systems (Cr-Ni-Mo, Cr-Mn-Si-Mo and Cr-Mo-V) designed for the mining applications (rock drilling equipment, drilling instrument). The microstructure of the steels was investigated after continuous cooling at the rates of 0.1...30 °C/s from the austenitization temperature down to the ambient temperature. The CCT diagrams of the studied steels were plotted showing that the alloying with different set of elements can provide the desired hardenability and microstructure.

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Section: Introductionmentioning

confidence: 99%