The Paton Welding Journal, 2011, №04



2011 №04 (01)

2011 №04 (03)

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The Paton Welding Journal, 2011, #4, 5-13 pages  

EFFECT OF ALLOYING OF THE WELDS ON STRUCTURE AND PROPERTIES OF WELDED JOINTS ON STEEL 17Kh2M

L.I. MARKASHOVA, V.D. POZNYAKOV, T.A. ALEKSEENKO, E.N. BERDNIKOVA, S.L. ZHDANOV, O.S. KUSHNARYOVA and A.A. MAKSIMENKO

E.O. Paton Electric Welding Institute, NASU, Kiev, Ukraine
 
 
Abstract
Structural-phase state of metal of the welded joints on high-strength low-carbon steel 17Kh2M (w_6/5 = 20-23 °C/s) produced by using welding wires of different chemical compositions and structural types (Sv-08G2S, Sv-08Kh20N9G7T, Sv-10KhN2GSMFTYu) was investigated. Analytical estimation of differential contribution of each structural parameter to a change in the set of mechanical properties (strength, ductility) of the HAZ and weld metal, as well as of a character of distribution and localisation of strain, level of local internal stresses, intensity and size of the stress raisers, which are potential sources of cracks forming during the welding process, was carried out on the basis of experimental data.
 
 
Keywords: arc welding, high-strength steel, welded joints, weld and HAZ metal, type of weld alloying, structural-phase parameters, mechanical properties, localised strain, local internal stresses, crack resistance
 
 
Received:                ??.??.??
Published:               28.04.11
 
 
References
1. Paton, B.E., Medovar, B.I. (1962) On improvement of quality of steels and alloys for critical welded structures. Avtomatich. Svarka, 11, 1-7.
2. Hrivnak, I., Pitrunova, M., Zayats, Ya. (1983) Measurement and calculation of maximal hardness of near-weld zone of structural steel joints. In: Pap. of 2nd Symp. of CMEA on Application of Mathematical Methods in Study of Weldability (Sofia, 1983), Pt 2, 213-221.
3. Bessyo, K., Ito, Y. (1968) Weldability formula of high strength steels related to heat-affected zone cracking. IIW Doc. IX-576-68.
4. Shorshorov, M.Kh., Belov, V.V. (1972) Phase transformations and properties of steel in welding. Moscow: Nauka.
5. Makarov, E.L. (1981) Cold cracks in welding of alloy steels. Moscow: Mashinostroenie.
6. Gorynin, I.V. (1980) Weldable hull high-strength steels and their application. Kiev: Naukova Dumka.
7. Suzuki, H. (1967) About yield strength of polycrystalline metals and alloys. In: Structure and mechanical properties of metals. Moscow: Metallurgiya.
8. Ashby, I.F. (1972) On Orowan stress. In: Physics of strength and plasticity. Moscow: Metallurgiya.
9. Goldshtejn, M.I., Litvinov, V.S., Bronfin, B.M. (1986) Physics of metals of high-strength alloys. Moscow: Metallurgiya.
10. Conrad, H. (1973) Model of strain hardening for explanation of grain size effect on stress of flow of metals. In: Ultrafine grain in metals: Call. of pap. Ed. by L.K. Gordienko. Moscow: Metallurgiya.
11. Armstrong, R.V. (1973) Strength properties of metals with ultrafine grain. In: Ibid.
12. Petch, N.J. (1953) The cleavage strength of polycrystalline. J. Iron and Steel Inst., 173(1), 25-28.
13. Orowan, E. (1954) Dislocation in metals. New York: AIME.
14. Ashby, M.F. (1983) Mechanisms of deformation and fracture. Adv. Appl. Mech., 23, 118-177.
15. Kelly, A., Nickolson, R. (1966) Precipitation hardening. Moscow: Metallurgiya.
16. Ebelling, R., Ashby, M.F. (1966) Yielding and flow of two phase copper alloys. Phil. Mag., 13(7), 805-809.
17. Markashova, L.I., Grigorenko, T.A., Poznyakov, V.D. et al. (2009) Influence of thermal cycles of welding and external loading on structural-phase variations and properties of joints of 17Kh2M steel. The Paton Welding J., 7, 18-25.
18. Markashova, L.I., Grigorenko, G.M., Arsenyuk, V.V. et al. (2002) Criterion of estimation of mechanical properties of dissimilar material joints. In: Proc. of Int. Conf. on Mathematical Modeling and Information Technologies in Welding and Related Processes (16-20 Sept. 2002, Katsiveli, Crimea, Ukraine). Kiev: PWI, 107-113.
19. Markashova, L.I., Grigorenko, G.M., Arsenyuk, V.V. et al. (2004) Structural approach to evaluation of mechanical properties in HAZ of steel and alloy joints. In: Proc. of 2nd Int. Conf. on Mathematical Modeling and Information Technologies in Welding and Related Processes (13-17 Sept. 2004, Katsiveli, Crimea, Ukraine). Kiev: PWI, 174-179.
20. Markashova, L.I., Grigorenko, G.M., Poznyakov, V.D. et al. (2009) Structural factors determining the properties of strength, ductility and fracture of welded joints. In: Proc. of 4th Int. Conf. on Mathematical Modeling and Information Technologies in Welding and Related Processes (27-30 May 2008, Katsiveli, Crimea, Ukraine). Kiev: PWI, 87-94.
21. Markashova, L.I., Grigorenko, G.M., Poznyakov, V.D. et al. (2009) Structural criterion of evaluation of strength, ductility and crack resistance of metals, alloys, composite materials and their welded joints. In: Proc. of 4th Int. Conf. on Fracture Mechanics of Materials and Strength of Structures (June 2009, Lviv). Lviv: G.V. Karpenko FMI, 447-451.
22. Romaniv, O.N. (1979) Fracture toughness of structural steels. Moscow: Metallurgiya.
23. Koneva, N.A., Lychagin, D.V., Teplyakova, L.A. et al. (1986) Theoretical and experimental study of disclinations. Leningrad: LFTI.
24. Conrad, H. (1963) Effect of grain size on the lower yield and flow stress of iron and steel. Acta Met., 11, 75-77.

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Suggested Citation

L.I. MARKASHOVA, V.D. POZNYAKOV, T.A. ALEKSEENKO, E.N. BERDNIKOVA, S.L. ZHDANOV, O.S. KUSHNARYOVA and A.A. MAKSIMENKO (2011) EFFECT OF ALLOYING OF THE WELDS ON STRUCTURE AND PROPERTIES OF WELDED JOINTS ON STEEL 17Kh2M. The Paton Welding J., 04, 5-13.

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