Influence of the heat treatment on the mechanical properties and structure of TWIP steel in wires

• Autorzy: Bajor T. , Muskalski Z. , Wiewiórowska S. , Pilarczyk J. W.
• Języki publikacji: EN

Abstrakty

EN

Purpose: The aim of this paper is to determine influence of the drawing process of TWIP steel wires on their mechanical properties and the structure changes. Design/methodology/approach: The heat treatment of steel containing 29.4% manganese and little amount of carbon (0.0049 % C) allows to obtain TWIP effect, and the austenitic structure for this type of steel was realized. In order to investigate the structure changes, the optical microscopy was used. Mechanical properties were determined by the compression test and drawing process. Findings: The analyses of changes of mechanical properties and the structure after particular drawings stages was carried out. At the total draft of 93.4 % the value of drawing stress was 1060MPa, however further deformations of the wire brought relation Rm/R0.2 to be above 1.6. Research limitations/implications: Continuation of the investigations with the use of transmission electron microscopy makes it possible to identify all phases that appear in this steel. Practical implications: Drawn products characterized by high strength properties together with good plasticity might be used for production of connecting elements because they can absorb large quantity of energy. Originality/value: For the first time there were obtained so high hardening level as well as so high plasticity in the drawing process.

Słowa kluczowe

EN

metallic alloys; drawing process; austenitic steel; TWIP effect

PL

stopy metaliczne; proces ciągnienia; efekt TWIP

• Wydawca: International OCSCO World Press
• Czasopismo: Archives of Materials Science and Engineering
• Rocznik: 2007
• Tom: Vol. 28, nr 6
• Strony: 337--340
• Opis fizyczny: Bibliogr. 18 poz., il., wykr.

Twórcy

autor

Bajor T.

autor

Muskalski Z.

autor

Wiewiórowska S.

autor

Pilarczyk J. W.

• Faculty of Materials Processing Technology and Applied Physics, Częstochowa University of Technology, Al. Armii Krajowej 19, 42-200 Częstochowa, Poland,

Bibliografia

• [1] J. Adamczyk, A. Grajcar, Effect of heat treatment conditions on the structure and mechanical properties of DP-type steel, Proceedings of the 14th Scientific International Conference „Achievements in Mechanical and Materials Engineering” AMME’2006, Gliwice-Wisła, 2006, 305-308.
• [2] A. Grajcar, Determination of the tability of retained austenite in TRIP-aided bainitic steel, Journal of Achievements in Materials and Manufacturing Engineering 20 (2007) 111-114.
• [3] J. Lis, A. K. Lis, C. Kolan, Processing and properties of C-Mn steel with dual phase microstructure, Proceedings of the 13th Scientific International Conference „Achievements in Mechanical and Materials Engineering” AMME’2005, Gliwice-Wisła, 2005, 395-398.
• [4] J. W. Christian, S. Mahajan, Deformation Twinning, Prognosis in Material Science 39 (1995) 1-157.
• [5] S. Allain, J. P. Chateau, O. Bouaziz, M. Legros, X. Garat, Characterization of the mechanical twinning microstructure in a high manganese content austenitic steel, Proceedings of the International Conference On TRIP Aided High Strength Ferrous Alloys, Ghent,(2002) 75-78.
• [6] S. Allain, J. P. Chateau, O. Bouaziz, Constitutive model of the TWIP effect in a polycrystalline high manganese content austenitic steel, Proceedings of the International Conference On TRIP Aided High Strength Ferrous Alloys, Ghent,(2002) 51-54.
• [7] S. Allain, J. P. Chateau, O. Bouaziz, S. Migot, N. Guelton, Correlations between the calculated stacking fault energy and the plasticity mechanisms in Fe-Mn-C alloys, Materials Science and Engineering A 387-389 (2004) 158-162.
• [8] S. Allain, J. P. Chateau, O. Bouaziz, A physical model of the twinning-induced plasticity effect in a high manganese austenitic steel, Materials Science and Engineering A 387-389 (2004) 143-147.
• [9] S. Vercammen, B. Blanpain, B. C. De Cooman, P. Wollants, Cold rolling behaviour of an austenitic Fe-30Mn-3Al-3Si TWIP-steel: the importance of deformation twinning, Acta Materialia 52 (2004) 2005-2012.
• [10] S. Vercammen, B. C. De Cooman, N. Akdut, B. Blanpain, P. Wollants, Microstructural evolution and crystallographic texture formation of cold rolled austenitic Fe-30Mn-3Al-3Si TWIP-steel, Proceedings of the International Conference On TRIP-Aided High Strength Ferrous Alloys, Ghent (2002) 55-60.
• [11] S. Vercammen, B. C. De Cooman, N. Akdut, B. Blanpain, P. Wollants, Microstructural evolution and crystallographic texture formation of cold rolled austenitic Fe-30Mn-3Al-3Si TWIP-steel, Steel Research International 74 (2003) 370-375.
• [12] U. Brux, G. Frommeyer, O. Grassel, L. W. Meyer, A. Weise, Development and characterization of high strength impact resistant Fe-Mn-(Al-,Si) TRIP/TWIP steels, International Conference On TRIP Aided High Strength Ferrous Alloys, Ghent (2002) 91-96.
• [13] G. Frommeyer, E. J. Drewes, B. Engl, Physical and mechanical properties of iron-aluminium-(Mn, Si) lightweight steels, La Revue de Metallurgie 10 (2000), 1245-1253.
• [14] T. Bajor, M. S. Szczerba, The influence of plastic strain on twinning stress in Cu-8 at.% single crystals, Proceedings of the 10th Jubilee Conference FORMING 2003, Poland-Podlesice k/Kroczyc (2003) 7-12 (in Polish).
• [15] T. Bajor, M. S. Szczerba, The influence of plastic strain on twinning stress in Cu-8 at.% single crystals, Archives of Civil and Mechanical Engineering IV (2004) 19-26.
• [16] J. P. Hirth, J. Lothe, The Theory of dislocations, II edition, published by John Wiley, New York, 1982.
• [17] Z. Muskalski, Z. Stradomski, J. W. Pilarczyk, M. Suliga, J. Herian, The influence of drawing process on mechanical properties TWIP steel, Metallurgist-News Metallurgist 2 (2005) 107-109.
• [18] Z. Muskalski, Z. Stradomski, J. W. Pilarczyk, M. Suliga: The analysis of the possibility of wire drawing TWIP steel, Work collection 12th of Scientific-Technical International Conference „Mechanical engineering and technical environment XXI century”, National Technological University of Donieck, Sewastopol, 2005, 167-170.