Relationship between Structure and Crack Resistance of Welded Joints Made without Heating and Subsequent Heat Treatment

Issues » Volume 43, Issue 6

S. V. Artyomova$^{1}$, M. G. Efimenko$^{2}$

$^{1}$JSC ‘Turboatom’, 199 Moskovsky Ave., UA-61037 Kharkiv, Ukraine
$^{2}$National Technical University ‘Kharkiv Polytechnic Institute’, 2 Kyrpychova Str., UA-61002 Kharkiv, Ukraine

Received: 09.07.2020; final version - 03.03.2021. Download: PDF

To estimate the crack resistance of welded joints in the brittle-viscous transition region, performed by two variants of transverse hill welding differ in heat input, the impact strength in the certain temperature range and the nature of fracture during shock bending are studied, as well as the temperature of the transition to a brittle state and the structure of the welded joint zones are determined. As found, in the heat affected zone of a welded joint made with less heat input, a higher impact strength in the brittle-viscous transition region is achieved, which is due to the formation of a favourable granular bainite structure in this zone.

Key words: heat-resistant steel, impact strength, transverse hill welding, crack resistance, bainite.

URL: https://mfint.imp.kiev.ua/en/abstract/v43/i06/0769.html

DOI: https://doi.org/10.15407/mfint.43.06.0769

PACS: 62.20.F-, 62.20.mj, 62.20.mm, 62.20.mt, 64.70.kd, 81.20.Vj, 81.30.Kf

Citation: S. V. Artyomova and M. G. Efimenko, Relationship between Structure and Crack Resistance of Welded Joints Made without Heating and Subsequent Heat Treatment, Metallofiz. Noveishie Tekhnol., 43, No. 6: 769—779 (2021)

REFERENCES

R. A. Kozlov, Svarka Teploustoychivykh Staley [Welding of Heat-Resistant Steels] (Leningrad: Mashinostroenie: 1986) (in Russian).
S. Y. German, Elektrodugovaya Svarka Teploustoychivykh Staley Perlitnogo Klassa [Electric Arc Welding of Heat-Resistant Steels of Pearlite Class] (Moscow: Mashinostroenie: 1972) (in Russian).
A. E. Anoxov, F. A. Xromchenko, Y. V. Fedyna, Y. N. Vornovyczkyj, and A. S. Pozdnyakova, Svarochnoe Proizvodstvo, No. 3: 17 (1985) (in Russian).
S. S. D'yachenko and V. B. Rabuxyn, Fizicheskie Osnovy Prochnosti Metallov [Physical Foundations of the Strength of Metals] (Kharkiv: Vyshcha Shkola: 1982) (in Russian).
B. S. Kasatkyn, Struktura i Mikromekhanizm Khrupkogo Razrusheniya Staley [The Structure and Micromechanism of Brittle Fracture of Steel] (Kyiv: Tekhnika: 1964) (in Russian).
M. Kh. Shorshorov and V. V. Belov, Fazovye Prevrashcheniya i Izmeneniya Svoystv Staley pri Svarke [Phase Transformations and Changes in the Properties of Steel during Welding] (Kyiv: Nauka, 1972) (in Russian).
R. Cymmerman and K. Gyunter, Metallurgiya i Materialovedenie [Metallurgy and Materials Science] (Moscow: Metallurgiya, 1982) (in Russian).
A. P. Gulyaev, Metallovedenie [Metal Science] (Moscow: Metallurgiya: 1986) (in Russian).
Normy Rascheta na Prochnost' Oborudovaniya i Truboprovodov Atomnykh Energeticheskikh Ustanovok PNAE G-7-002-86 [Strength Calculation Standards for Equipment and Pipelines of Nuclear Power Plants PNAE G-7-002-86] (Moscow: 1986) (in Russian).
S. A. Saltikov, Stereometricheskaya Metallografiya [Stereometric Metallography] (Moscow: Metallurgiya: 1970) (in Russian).
S. N. Egorov, Opredelenie Vyazkosti Razrusheniya Rotornykh Staley po Rezul'tatam Priyemno-Sdatochnykh Ispytaniy Rotornykh Pokovok [Determination of the Fracture Toughness of Rotary Steels by the Results of the Acceptance Tests of Rotary Forgings] (Moscow: Energomash: 1984), p. 21 (in Russian).
Metally dlya Turbin i Teploobmennogo Oborudovaniya Atomnykh Elektrostantsiy. Rekomendatsii po Vyboru Metallov. Obshchie Tekhnicheskie Trebovaniya [Metals for Turbines and Heat Exchange Equipment of Nuclear Power Plants. Recommendations for the Selection of Metals. General Technical Requirements] (Leningrad: 1987), p. 107 (in Russian).
V. V. Svyshhenko, D. L. Cheprasov, and V. N. Shabalyn, Polzunovskiy Al'manakh, No. 3: 213 (2008) (in Russian).
S. S. Dyachenko and O. P. Fomyna, Metallovedenie i Termoobrabotka Metallov, No. 1: 5 (1970) (in Russian).
D. P. Cheprasov and Yu. A. Fylatov, Svarka i Diagnostika, No. 6: 14 (2014) (in Russian).
A. K. Czaryuk, Osobennosti Razvitiya Plasticheskoy Deformatsii v Protsessakh Formirovaniya Svarnogo Soedineniya [Features of the Development of Plastic Deformation in the Processes of Forming a Welded Joint] (Thesis of Disser. for PhD Tech. Sci.) (Kyiv: 1979) (in Russian).