Microstructure and properties of CuNi2Si1 alloy processed by continuous RCS method

• Autorzy: Stobrawa J. , Rdzawski Z. , Głuchowski W. , Malec W.
• Języki publikacji: EN

Abstrakty

EN

Purpose: Precipitation strengthened copper constitutes a group of functional and structural materials used where combination of high electrical conductivity with high strength is required. A growing trend to use new copper-based functional materials is recently observed world-wide. Within this group of materials particular attention is drawn to those with ultrafine grain size of a copper matrix. Design/methodology/approach: This study was aimed to investigate mechanical properties and microstructure in strips of age hardenable CuNi2Si alloy processed by continuous repetitive corrugation and straightening (CRCS). Tests were performed with quenched (900°C/1hour/water) or annealed (650°C /1 hour) 0.8 mm thick strips using original die set construction (toothed rolls and plain rolls set) installed in tensile testing machine. The changes of mechanical properties (HV, ultimate tensile strength, 0.2 yield strength) as well as microstructure evolution versus number of deformation cycles were investigated. The microstructure was investigated by optical and electron microscopy (TEM and SEM equipped with EBSD). Findings: The obtained strengthening effects and observed microstructure changes have been discussed basing on the existing theories related to strengthening of ultra fine grained copper based materials. Practical implications: The CRCS process effectively reduced the grain size of CuNi2Si1 alloy strips especially for annealed material, demonstrating the CRCS as a promising new method for producing ultra fine grained metallic strips. Originality/value: The paper contributes to the mechanical properties of precipitation strengthened ultra fine grained copper - chromium alloy strips obtained by original RCS method and to the microstructure evolution.

Słowa kluczowe

EN

severe plastic deformation; ultra fine grained material; mechanical properties; electron microscopy; metallography

PL

odkształcenie plastyczne zrywające; materiał ultradrobnoziarnisty; właściwości mechaniczne; mikroskopia elektronowa; metalografia

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2009
• Tom: Vol. 37, nr 2
• Strony: 466--479
• Opis fizyczny: Bibliogr. 22 poz., rys., tabl.

Twórcy

autor

Stobrawa J.

autor

Rdzawski Z.

autor

Głuchowski W.

autor

Malec W.

• Non-Ferrous Metals Institute, ul. Sowińskiego 5, 44-100 Gliwice, Poland,

Bibliografia

• [1] M. Greger, R. Kocich, L. Cizek, L. A. Dobrzański, M. Widomska, B. Kuretova, A. Silbernagel, The structure and properties of chosen metals after ECAP, Journal of Achievements in Materials and Manufacturing Engineering 18 (2006) 103-106.
• [2] J. Stobrawa, Z. Rdzawski, Deformation behaviour of dispersion hardened nanocrystalline copper, Journal of Achievements in Materials and Manufacturing Engineering 17 (2006) 153-156.
• [3] J. Stobrawa, Z. Rdzawski, W. Głuchowski, Structure and properties of dispersion hardened submicron grained copper, Journal of Achievements in Materials and Manufacturing Engineering 20 (2007) 195-198.
• [4] J. Stobrawa, Z. Rdzawski, Dispersion – strengthened nanocrystalline copper, Journal of Achievements in Materials and Manufacturing Engineering 24/2 (2007) 35-42.
• [5] J. P. Stobrawa, Z. M. Rdzawski, Microstructure and properties of nanocrystalline copper – yttria microcomposite, Journal of Achievements in Materials and Manufacturing Engineering 24/2 (2007) 83-86.
• [6] J. P. Stobrawa, Z. M. Rdzawski, Thermal stability of functional properties in dispersion and precipitation hardened selected copper alloys, Archives of Materials Science and Engineering 30/1 (2008) 17-20.
• [7] J. P. Stobrawa, Z. M. Rdzawski, Formation of a stable nanostructure n the copper-based materials, Proceedings of the 11th International Scientific Conference “Contemporary Achievements in Mechanics, Manufacturing and Materials Science” CAM3S’2005, Gliwice - Zakopane, 2005, 909-914.
• [8] M. Greger, R. Kocich, L. Cizek, Grain refining of Cu and Ni-Ti shape memory alloys by ECAP process, Journal of Achievements in Materials and Manufacturing Engineering 20 (2007) 247-250.
• [9] L. Cizek, M. Greger, L. A. Dobrzański, I. Juricka, R. Kocich, L. Pawlica, T. Tański, Structure and properties of alloys of the Mg-Al-Zn system, Journal of Achievements in Materials and Manufacturing Engineering 32/2 (2009) 179-187.
• [10] S. Rusz, K. Malanik, Refining of structure of the alloy AlMn1Cu with use of multiple severe plastic deformation, Journal of Achievements in Materials and Manufacturing Engineering 27/2 (2008) 167-170.
• [11] S. Rusz, K. Malanik, J. Dutkiewicz, L. Cizek, I. Skotnicova, J. Hluchnik, Influence of change of direction of deformation at ECAP technology on achieved UFG In AlMn1Cu alloy, Journal of Achievements in Materials and Manufacturing Engineering 35/1 (2009) 21-28.
• [12] Il Heon Son, Young Gwan Jin, Jeong Ho Lee, Young-Taek Im, Load predictions for non-isothermal ECAE by finite element analyses, International Journal of Computational Materials Science and Surface Engineering 1/2 (2007) 242-258.
• [13] 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.
• [14] Y. H. Zhao, X. Z. Liao, Y. T. Zhu, Z. Horita, T. G. Langdon, Influence of stacking fault energy on nanostructure formation under high pressure torsion, Materials Science and Engineering A 410-411 (2005) 188-193.
• [15] X. Sauvage, R. Pippan, Nanoscaled structure of a Cu-Fe composite processed by high-pressure torsion, Materials Science and Engineering A 410-411 (2005) 345-347.
• [16] Y. H. Zhao, Y. T. Zhu, X. Z. Liao, Z. Horita, T. G. Langdon, Influence of stacking fault energy on the minimum grain size achieved in severe plastic deformation torsion, Materials Science and Engineering A 463 (2007) 22-26.
• [17] K. Rodak, Severely deformed Cu by using compression with oscillatory torsion method, Journal of Achievements in Materials and Manufacturing Engineering 20 (2007) 179-182.
• [18] Y. T. Zhu, H. Jiang, T. C. Love, A new route to bulk nanostructured materials, Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science 32/6 (2001) 1559-1562.
• [19] J. Y. Huang, Y. T. Zhu, H. Jiang, T. C. Love, Microstructure and dislocation configuration in nanostructured Cu processed by repetitive corrugation and straightening, Acta Materialia 49 (2001) 1497-1505.
• [20] J. Huang, Y. T. Zhu, D. J. Alexander, X. Liao, T. C. Love, R. J. Asaro, Development of repetitive corrugation and straightening, Materials Science and Engineering A 371 (2004) 35-39.
• [21] A. Mishra, V. Richard, F. Gregori, R. J. Asaro, M. A. Meyers, Microstructural evolution in copper processed by severe plastic deformation, Materials Science and Engineering A 410-411 (2005) 290-298.
• [22] A. Mishra, B.K. Kad, F. Gregori, M.A. Meyers, Microstructural evolution in copper subjected to severe plastic deformation: Experiments and analysis, Acta Materialia 55 (2007) 13-28.