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In the present study, a large-area stir zone (SZ) was fabricated in AA2014 alloy using multi-pass friction stir processing (FSP) with pin overlapping. The microstructure evolution, crystallographic texture, precipitation phenomenon, and tensile behavior were studied and reported. The microstructure of the large-area SZ consists of equiaxed fine grains with a high density of high angle boundaries caused by dynamic recovery (DRV) and continuous-dynamic recrystallization (C-DRX), and the grain refining has been uniform in each overlapping pass (the grain size within 4-7 μm range). The material flow around the pin caused by the stirring action of the tool contributed to the creation of a strong Brass-{110}<112>and A-{110}<111>components in the first pass of SZ. Unlike first pass SZ, the second to fifth-pass SZ presents Copper-{112}<111>and Cube- {001}<100>components due to an increase of heat input by the shoulder to participate multiple times on each overlapping SZ. The hardness and strength of the FSP sample were found to be lowered relative to a base metal. Simultaneously, the SZ ductility increased after FSP by 155% due to the material softening and dissolution of Al2Cu precipitates in the SZ. Kocks-Mecking plots of the BM and FSP samples witnessed the Stage-III of work-hardening behavior. The fine-grain structure and precipitation phenomenon in the FSP sample resulted in better corrosion resistance than the base metal.
Czasopismo
Rocznik
Tom
Strony
art. no. e43, 2023
Opis fizyczny
Bibliogr. 39 poz., rys., tab., wykr.
Twórcy
- Anil Neerukonda Institute of Technology and Sciences, Visakhapatnam 531162, India
autor
- National Institute of Technology, Warangal 506004, India
autor
- National Institute of Technology, Trichy 620015, India
autor
- Indian Institute of Technology, Bombay 400076, India
autor
- Indian Institute of Technology, Bombay 400076, India
Bibliografia
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Uwagi
PL
Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023)
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-c7c14fc6-d71d-4628-8543-02a1ed65d0b4