Hydrostatic extrusion of Al coated titanium obtained by the magnetron technique

• Autorzy: Pachla W. , Kulczyk M. , Skiba J. , Przybysz S. , Czyżniewski A. , Betiuk M.
• Języki publikacji: EN

Abstrakty

EN

Purpose: The paper synthetically presents the ideas of hydrostatic extrusion of metals in order to obtain strong refinement of their structure. It seems that modification of extruded material and the surfaces of dies may be one of the methods for limiting these adverse phenomena. The paper describes the role of lubricating the Al layer during the titanium extrusion process. Design/methodology/approach: Studies concerning this technique are conducted at The Polish Academy of Sciences Institute of High Pressure Physics. Due to strong plastic deformations (SPD), the cumulative hydrostatic extrusion (HE) process must be used, i.e. the process of step-by-step extrusion with low deformation ratio for each step, the deformations created in each step accumulate and result in strong cumulative deformation. Findings: This is because the available working pressures of extrusion presses are limited, thus limiting the maximum deformation ratio available in a single extrusion pass. This limitation is additionally sharpened by higher strength of material deformed in cold state or at low temperatures. Research limitations/implications: Due to tribological conditions existing between the extruding tool (a die) and the flowing material, the die becomes worn quickly and the finishing quality (roughness) of the extruded material surface deteriorates. Practical implications: As a result, the extruding pressure increases which has a negative impact, the machine and tooling load becomes higher and the phenomenon of abrupt outflow of the material being extruded from the extruding tool occurs, causing poor tolerances of lateral dimensions of the product. Originality/value: The process of depositing Al coatings on cylindrical surfaces of titanium material being extruded using the PA PVD technique was presented in detail. Also, the paper describes examinations of Al coating properties and structure of Grade 3 titanium in subsequent steps of hydrostatic extrusion process.

Słowa kluczowe

EN

hydrostatic extrusion; Al coating; PVD; titanium; Grade 3; Calotest; spherical microsection; Vickers hardness; DSI method

PL

wyciskanie hydrostatyczne; powłoka aluminiowa; PVD; tytan; Kulotester; zgład sferyczny; twardość Vickersa; metoda DSI

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2015
• Tom: Vol. 68, nr 1
• Strony: 25--31
• Opis fizyczny: Bibiogr. 14 poz., rys., tab.

Twórcy

autor

Pachla W.

• IWC PAN Institute of High Pressure Physics - institute of the Polish Academy of Sciences, ul. Sokołowska 29/37, 01-142 Warszawa, Poland

autor

Kulczyk M.

• IWC PAN Institute of High Pressure Physics - institute of the Polish Academy of Sciences, ul. Sokołowska 29/37, 01-142 Warszawa, Poland

autor

Skiba J.

• IWC PAN Institute of High Pressure Physics - institute of the Polish Academy of Sciences, ul. Sokołowska 29/37, 01-142 Warszawa, Poland

autor

Przybysz S.

• IWC PAN Institute of High Pressure Physics - institute of the Polish Academy of Sciences, ul. Sokołowska 29/37, 01-142 Warszawa, Poland

autor

Czyżniewski A.

• Koszalin University of Technology, ul. Śniadeckich 2, 75-453 Koszalin, Poland

autor

Betiuk M.

• Institute of Precision Mechanics, ul. Duchnicka 3, 01-796 Warszawa, Poland

Bibliografia

• [1] K. Topolski, H. Garbacz, W. Pachla, K.J. Kurzydłowski, Hydrostatic extrusion of titanium –process parameters, Advances in Materials Science 7/4/14 (2007) 114-120.
• [2] W. Pachla, M. Kulczyk, M. Sus-Ryszkowska, A. Mazur, K.J. Kurzydlowski, Nanocrystalline titanium produced by hydrostatic extrusion, Journal of Materials Processing Technology 205/1-3 (2008) 173-182.
• [3] W. Pachla, M. Kulczyk, A. Swiderska-Sroda, M. Lewandowska, H. Garbacz, A. Mazur, K.J. Kurzydłowski, Nanostructuring of metals by hydrostatic extrusion, Proceedings of 9th International Conference on Metal Forming EMRS 2006, 535-538.
• [4] M. Kulczyk, W. Pachla, A. Mazur, M. Suś-Ryszkowska, N. Krasilnikov, K.J. Kurzydłowski, Producing bulk nanocrystalline materials by combined hydrostatic extrusion and equal channel angular pressing, Materials Science Poland 25/4 (2007) 991-999.
• [5] W. Pachla, M. Kulczyk, A. Mazur, M. Sus-Ryszkowska, UFG and nanocrystalline microstructures produced by hydrostatic extrusion of multifilament wires, International Journal of Materials Research 07/100 (2009) 984-990.
• [6] M. Lewandowska, A.Krawczyńska, M. Kulczyk, Structure and properties of nano-sized Eurofer 97steel obtained by hydrostatic extrusion, Journal of Nuclear Materials 386-388 (2009) 499-502.
• [7] M. Kulczyk, B. Zyśk, M. Lewandowska, K.J. Kurzydłowski, Grain refinement in CuCrZr by SPD processing, Physica Status Solidi A 207/05 (2010) 1136-1138.
• [8] M. Lewandowska, H. Dybiec, M. Kulczyk, J. Latuch, K.J. Kurzydłowski, Nano-refinement, nano-consolidation: different fabrication routes of nano-crystalline aluminium alloys, Materials Science Forum 667-669 (2011) 87-90.
• [9] W. Pachla, A. Mazur, J. Skiba, M. Kulczyk, S. Przybysz, Effect of hydrostatic extrusion with backpressure on mechanical properties of grey and nodular cast irons, Archives of Metallurgy and Materials 56/4 (2011) 945953.
• [10] M. Betiuk, K. Burdyński, S. Jończyk, A. Szczepaski, K. Niedwiedzki, „Wirotest” and “Kulotester” measuring and control devices for testing the properties of materials, Surface Engineering 2 (2008) 50-56 (in Polish).
• [11] M. Betiuk, Development of technology PA PVD-Arc - nanolayer coatings on tools, Surface Engineering 3 (2008) 16-22 (in Polih).
• [12] W. Pachla, M. Kulczyk, J. Skiba, S. Przybysz, M. Betiuk, J. Michalski, P. Wach, Surface modification of hydrostatic extrusion dies, Surface Engineering 3 (2012) 26 -32 (in Polish).
• [13] PN-EN ISO 14577-1: Metals – Instrumented indentation test for determining hardness and other properties of materials – Part 1: Research Method, PKN, Warsaw, 2005 (in Polish).
• [14] C. Heermant D. Dengel, Klassische Estimate material properties, Material Testing 38/9 (1996) 374-378 (in German).