Influence of cold working on microstructure and properties of annealing CuTi4 alloy

• Autorzy: Konieczny J. , Rdzawski Z.
• Języki publikacji: EN

Abstrakty

EN

Purpose: The aim of this study was to investigate the effect of cold plastic deformation of the supersaturation on the structure and properties of the CuTi4 alloy after aging. Design/methodology/approach: CuTi4 alloy of supersaturation temperature of 900°C after heating for 1 hour. After solutioning alloy was processed in two ways: first aged in the temperature range 450-600°C and the second stage rolling reduction with Z=50%, and then aged in the temperature range 450-600°C. Findings: The results confirmed that the temperature within the range 500-600°C, the hardness increases with increasing aging time until reaching the maximum, but then with increasing aging time the hardness decreases. By using methods of electron microscopy (SEM, EDS, EBSD, TEM) after aging at 550°C after 1 minute of modulated microstructure was observed - characteristic for the spinodal transformation and lamellar, formed by nucleation and growth. Research limitations/implications: A widely used method for increasing the strength properties of metal alloys, in addition to cold plastic deformation, is the strengthening of new phases separated particles during aging. The effect of cold rolling operation between solutioning and aging on microstructure and properties of alloyed copper CuTi4. Further examination also included the effect of time and aging temperature. Practical implications: On the basis of conductivity, the influence of cold plastic deformation and subsequent aging on the hardness and electrical conductivity of the alloy CuTi4. It was found that with increasing aging time and with increasing aging temperature increases electrical conductivity of the alloy. On the basis of X-rays can be concluded that in alloyed copper containing 4% Ti and precipitation hardening metastable phase β’-Cu4Ti is separated, which occurs both in the previously deformed and undeformed cold worked alloy.

Słowa kluczowe

EN

metallic alloys; electron microscopy; heat treatment; cold deformation; CuTi4 alloy

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2012
• Tom: Vol. 55, nr 2
• Strony: 331--338
• Opis fizyczny: Bibliogr. 45 poz., rys.

Twórcy

autor

Konieczny J.

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

autor

Rdzawski Z.

• Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Konarskiego 18a, 44-100 Gliwice, Poland
• Institute of Non-Ferrous Metals, ul. Sowińskiego 5, 44-100 Gliwice, Poland

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