Microstructure characterization of ultrafine grained Cu alloys processed by methods with cyclic scheme of deformation

• Autorzy: Rodak K.

Identyfikatory

DOI

10.15199/28.2018.2.1

Warianty tytułu

PL

Charakterystyka mikrostruktury ultradrobnoziarnistych stopów miedzi otrzymywanych metodami cyklicznej deformacji

• Języki publikacji: EN

Abstrakty

EN

COT (compression with oscillatory torsion) is a simple process that has the ability to deform bulk metallic samples. Performed investigations show that this method of deformation leads to grain refinement of Cu–Cr and Cu–Fe alloys. The grain size obtained via the dislocation subdivision mechanism associated with generation of non-equilibrum grain boundaries is in the UFG range. Large fraction of grain boundaries have low angles of misorientation. The limitation of the grain refinement and creation of low angles boundaries can be attributed to the extensive dynamic recovery. However, recrystallization process and deformation twinning plays a crucial role in grain refinement resulting in grain refinement to the nanoscale. The present overview shows that many structural elements accompanying formation UGF structure influence on understanding of the microstructure–properties relationship in these materials.

PL

Prezentowana praca ma na celu scharakteryzowanie zmian mikrostruktury zachodzących w stopach miedzi CuCr0,6 (C18200) i CuFe2 (C19400) podczas rozdrabniania ziarna z wykorzystaniem metod RCMR i COT. Stopy CuCr0,6 i CuFe2 należą do grupy stopów umacnianych wydzieleniowo. W związku z tym w pracy przedyskutowano również wpływ struktury wyjściowej (stan materiału po przesycaniu oraz starzeniu) na kształtowanie rozdrobnionej struktury. Przedstawione problemy mogą być pomocne w pokazaniu pełnego obrazu procesów strukturalnych towarzyszących kształtowaniu się ultradrobnoziarnistej struktury stopów miedzi podczas cyklicznego odkształcania SPD.

Słowa kluczowe

EN

severe plastic deformation; microstructure; mechanical properties; CuCr alloys; Cu-Fe alloys

PL

intensywne odkształcenie plastyczne; mikrostruktura; właściwości mechaniczne; stopy CuCr; stopy Cu-Fe

• Wydawca: Wydawnictwo SIGMA-NOT
• Czasopismo: Inżynieria Materiałowa
• Rocznik: 2018
• Tom: Vol. 39, nr 2
• Strony: 46--55
• Opis fizyczny: Bibliogr. 68 poz., fig.

Twórcy

autor

Rodak K.

• Silesian University of Technology, Faculty of Materials Engineering and Metallurgy, Institute of Materials Engineering, Katowice

Bibliografia

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Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).