The influence of hot-working conditions on the structure and mechanical properties of forged products of microalloyed steel

• Autorzy: Opiela M. , Grajcar A. , Gołombek K.
• Języki publikacji: EN

Abstrakty

EN

Purpose: Results of the effect of thermomechanical processing conditions on the microstructure, mechanical properties and crack resistance are included in the present work. Conditions of forging with the method of thermo-mechanical treatment were developed basing on the analysis of precipitation kinetics of MX interstitial phases in a solid solution, plastometric examinations and investigations of the kinetics of undercooled austenite phase transformations. Design/methodology/approach: Light microscopy and transmission electron microscopy techniques were used to reveal the microstructure of samples obtained as a result of the thermomechanical forging. Mechanical properties and hardness tests as well as resistance to cracking using Charpy V samples at room and lowered temperature were carried out. Findings: Applied thermo-mechanical treatment allows obtaining fine-grained microstructure of austenite during hot-working and production of forged parts, which acquire advantageous set of mechanical properties and guaranteed crack resistance after controlled cooling from finishing plastic deformation temperature and successive tempering. Forgings produced with the method of thermo-mechanical treatment, consecutively subjected to tempering in the temperature range from 550 to 650°C, reveal the values of YS_0.2

Słowa kluczowe

EN

microalloyed steel; thermomechanical treatment; forged elements; crack resistance

PL

stal mikrostopowa; obróbka termomechaniczna; elementy kute; odporność na pękanie

• Wydawca: International OCSCO World Press
• Czasopismo: Archives of Materials Science and Engineering
• Rocznik: 2013
• Tom: Vol. 59, nr 1
• Strony: 28--39
• Opis fizyczny: Bibliogr. 30 poz.

Twórcy

autor

Opiela M.

• Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Konarskiego 18a, 44-100 Gliwice, Poland

autor

Grajcar A.

• Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Konarskiego 18a, 44-100 Gliwice, Poland

autor

Gołombek K.

• Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Konarskiego 18a, 44-100 Gliwice, Poland

Bibliografia

• [1] D. K. Matlock, G. Krauss, J. G. Speer, Microstructures and properties of direct-cooled microalloy forging steels, Journal of Materials Processing and Technology 117 (2001) 324-328.
• [2] T. Gladman, The physical metallurgy of microalloyed steels, The Institute of Materials, London, 1997.
• [3] J. Adamczyk, Manufacturing of mass-scale products from structural microalloyed steels in integrated production lines, Journal of Achievements in Materials and Manufacturing Engineering 20/1 (2007) 399-402.
• [4] P. Skubisz, H. Adrian, J. Sińczak, Controlled cooling of drop forged microalloyed-steel automotive crankshaft, Archives of Metallurgy and Materials 56/1 (2011) 93-107.
• [5] J. Adamczyk, M. Opiela, Engineering of forged products of microalloyed constructional steels, Journal of Achievements in Materials and Manufacturing Engineering 15/1-2 (2006) 153-158.
• [6] W. Ozgowicz, M. Opiela, A. Grajcar, E. Kalinowska-Ozgowicz, W. Krukiewicz, Metallurgical products of microalloy constructional steels, Journal of Achievements in Materials and Manufacturing Engineering 44/1 (2011) 7-34.
• [7] B. Eghbali, A. Abdollah-zadeh, Influence of deformation temperature on the ferrite grain refinement in a low carbon Nb-Ti microalloyed steel, Journal of Materials Processing and Technology 180 (2006) 44-48.
• [8] M. Cabibbo, A. Fabrizi, M. Merlin, G.L. Garagnani, Effect of thermo-mechanical treatment on the microstructure of micro-alloyed low-carbon steels, Journal of Materials Science & Technology 43 (2008) 6857-6865.
• [9] S.C. Hong, S.H. Lim, H.S. Hong, K.J. Lee, D.H. Shin, K.S. Lee, Effect of Nb on strain induced ferrite transformation in C-Mn steel, Materials Science and Engineering A 355/1-2 (2003) 241-248.
• [10] O. Kwon, A.J. DeArdo, Interactions between recrysta-llization and precipitation in hot-deformed microalloyed steels, Acta Metallurgica et Materialia 39/4 (1991) 529-538.
• [11] M. Maruyama, R. Uemori, M. Sugiyama, The role of niobium in the retardation of the early stage of austenite recovery in hot-deformed steels, Materials Science and Engineering A 250/1 (1998) 2-7.
• [12] S. Takaki, K. Kawasaki, Y. Kimura, Mechanical properties of ultra fine grained steels, Journal of Materials Processing and Technology 117/3 (2001) 359-363.
• [13] W.M. Rainforth, M.P. Black, R.L. Higginson, E.J. Palmiere, C.M. Sellars, Precipitation of NbC in a model austenitic steel, Acta Materialia 50/4 (2002) 735-747.
• [14] B. Dutta, E. Valdes, C.M. Sellars, Mechanism and kinetics of strain induced precipitation of Nb(C,N) in austenite, Acta Metallurgica et Materialia 40/4 (1992) 653-662.
• [15] R. Staśko, H. Adrian, A. Adrian, Effect of nitrogen and vanadium on austenite grain growth kinetics of a low alloy steel, Materials Characterization 56/4-5 (2006) 340-247.
• [16] E. Nes, N. Ryum, O. Hunderi, On the zener drag, Acta Metallurgica 33/1 (1985) 11-22.
• [17] M. MacKenzie, A.J. Craven, C.L. Collins, Nanoanalysis of very fine VN precipitates in steel, Scripta Materialia 54/1 (2006) 1-5.
• [18] J. Adamczyk, E. Kalinowska-Ozgowicz, W. Ozgowicz, R. Wusatowski, Interacation of carbonitrides V(C,N) undissolved in austenite on the structure and mechanical properties of microalloyed V-N steels, Journal of Materials Processing and Technology 54 (1995) 23-32.
• [19] M. Opiela, Thermo-mechanical treatment of the C-Mn steel with Nb, Ti, V and B microadditions, Archives of Materials Science and Engineering 28/6 (2007) 377-380.
• [20] R. Kuziak, T. Bołd, Y-W. Cheng, Microstructure control of ferrite-pearlite high strength low alloy steels utilizing microalloying additions, Journal of Materials Processing and Technology 53 (1995) 255-262.
• [21] J. Adamczyk, Development of the microalloyed constru-ctional steels, Journal of Achievements in Materials and Manufacturing Engineering 14/1-2 (2006) 9-20.
• [22] D. Jandowá, R. Divišová, L. Skálová, J. Drnek, Refinement of steel microstructure by free-forging, Journal of Achievements in Materials and Manufacturing Engineering 16/1-2 (2006) 17-24.
• [23] D. Rasouli, S. Khameneh, A. Akbarzadeh, G. Daneshi, Effect of cooling rate on the microstructure and mechanical properties of microalloyed forming steel, Journal of Materials Processing and Technology 206 (2008) 92-98.
• [24] T. Maguda, S. Pytel, I. Garcia, A. DeArdo, Fracture toughness of 0.1C-Mn-Mo-Nb steel after recrystallization controlled forming, Material Engineering 5 (2001) 601-606.
• [25] P. Skubisz, A. Łukaszek-Sołek, J. Bińczak, S. Bednarek, Drop forming of HSLA steel with application of thermomechanical treatment, Archives of Civil and Mechanical Engineering 8/4 (2008) 93-102.
• [26] A. Ghosh, S. Das, S. Chatterjee, B. Mishra, Influence of thermo-mechanical processing and different post-cooling techniques on structure and properties of an ultra low carbon Cu bearing HSLA forging, Materials Science and Engineering A348 (2003) 299-308.
• [27] M. Jahazi, B. Eghbali, The influence of hot forming conditions on the microstructure and mechanical properties of two microalloyed steels, Journal of Materials Processing and Technology 113 (2001) 594-598.
• [28] M. Opiela, Analysis of kinetics of precipitation of MX-type interstitial phases in microalloyed steels, Journal of Achievements in Materials and Manufacturing Engineering 47/1 (2011) 7-18.
• [29] M. Opiela, A. Grajcar, Hot deformation behavior and softening kinetics of Ti-V-B microalloyed steels, Archives of Civil and Mechanical Engineering 12/3 (2012) 327-333.
• [30] M. Opiela, W. Zalecki, A. Grajcar, Influence of plastic deformation on CCT-diagrams of new-developed microalloyed steel, Journal of Achievements in Materials and Manufacturing Engineering 51/2 (2012) 78-89.