Influence of heat treatment on the formation of ultrafine-grained structure of Al–Li alloys processed by SPD

• Autorzy: Rodak K. , Urbańczyk-Gucwa A. , Jabłońska M. , Pawlicki J. , Mizera J.

Identyfikatory

DOI

10.1016/j.acme.2017.06.007

• Języki publikacji: EN

Abstrakty

EN

In this study, binary Al–2.3wt%Li alloy, ternary Al–2.2wt%Li–0.1wt%Zr alloy and quaternary Al–2.2wt%Li–0.1wt%Zr–1.2wt%Cu alloy in the solution treated condition and additionally in aging condition were severely plastically deformed by rolling with cyclic movement of rolls (RCMR) method to produce ultrafine grained structure. Scanning transmission electron microscopy (STEM), scanning electron microscopy with EBSD detector (SEM/EBSD) were used for microstructural characterization and hardness test for a preliminary assessment of mechanical properties. The results shows, that the combination of aging treatments with RCMR deformation can effectively increase the hardness of Al–Li alloys. Second particles hinders the annihilation of dislocations in Al matrix during deformation leading to an increase of dislocation density. Significant amount of nanometric second particles in refined structure to ultrafine scale especially in Al–2.2wt%Li–0.1wt%Zr–1.2wt%Cu alloy effectively prevents the formation of high angle boundaries.

Słowa kluczowe

EN

Al-Li alloys; severe plastic deformation; grain refinement; microstructure; EBSD

PL

stopy Al-Li; odkształcenie plastyczne; mikrostruktura

• Wydawca: Springer ; Wrocław University of Science and Technology
• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2018
• Tom: Vol. 18, no. 1
• Strony: 331--337
• Opis fizyczny: Bibliogr. 16 poz., rys., wykr.

Twórcy

autor

Rodak K.

• Institute of Materials Science, Silesian University of Technology, Krasińskiego 8, 40-019 Katowice, Poland

autor

Urbańczyk-Gucwa A.

• Institute of Materials Science, Silesian University of Technology, Krasińskiego 8, 40-019 Katowice, Poland

autor

Jabłońska M.

• Institute of Materials Science, Silesian University of Technology, Krasińskiego 8, 40-019 Katowice, Poland

autor

Pawlicki J.

• Chair of Automotive Vehicle Construction, Silesian University of Technology, Krasińskiego 8, 40-019 Katowice, Poland

autor

Mizera J.

• Materials Science and Engineering Faculty, Warsaw University of Technology, Woloska 141, 02-507 Warsaw, Poland

Bibliografia

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Uwagi

PL

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