Structure, phase composition and strengthening mechanism of austenitic steel exposed to ultrasonic treatment by pins

V. A. Klimenov, Yu F. Ivanov, O. B. Perevalova, Yu B. Torgunakov, A. I. Skugarev, S. P. Andriets

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Using TEM and optical metallography analysis, a 18Cr-10Ni 12Kh18N10T austenitic steel has been investigated. It was established that after ultrasound treatment of steel a liquation heterogeneity decreasing and dynamic recrystallization in surface layers took place. An average size of grains and number of twinned grain boundaries decrease in this case. A general type grain boundaries are predominate in grain boundary ensemble. Polymorph transformation with formation of ε-martensite crystals occurs in austenitic grains with the size of 3 μm or more. Carbide phase precipitations size, especially Cr23C6, is decreased. Amplitude of curvature-torsion of austenitic crystalline lattice and value of scalar dislocation density are increased. As a result. microhardness of steel surface layers is increased.

Original languageEnglish
Pages (from-to)90-97
Number of pages8
JournalFizika i Khimiya Obrabotki Materialov
Issue number1
Publication statusPublished - 2001

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Austenitic steel
Phase composition
Grain boundaries
Ultrasonics
Steel
Dynamic recrystallization
Metallography
Polymorphism
Dislocations (crystals)
Martensite
Crystal lattices
Torsional stress
Microhardness
Carbides
Crystalline materials
Transmission electron microscopy
Crystals
austenitic steel

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Klimenov, V. A., Ivanov, Y. F., Perevalova, O. B., Torgunakov, Y. B., Skugarev, A. I., & Andriets, S. P. (2001). Structure, phase composition and strengthening mechanism of austenitic steel exposed to ultrasonic treatment by pins. Fizika i Khimiya Obrabotki Materialov, (1), 90-97.

Structure, phase composition and strengthening mechanism of austenitic steel exposed to ultrasonic treatment by pins. / Klimenov, V. A.; Ivanov, Yu F.; Perevalova, O. B.; Torgunakov, Yu B.; Skugarev, A. I.; Andriets, S. P.

In: Fizika i Khimiya Obrabotki Materialov, No. 1, 2001, p. 90-97.

Research output: Contribution to journalArticle

Klimenov, V. A. ; Ivanov, Yu F. ; Perevalova, O. B. ; Torgunakov, Yu B. ; Skugarev, A. I. ; Andriets, S. P. / Structure, phase composition and strengthening mechanism of austenitic steel exposed to ultrasonic treatment by pins. In: Fizika i Khimiya Obrabotki Materialov. 2001 ; No. 1. pp. 90-97.
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AU - Skugarev, A. I.

AU - Andriets, S. P.

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