Mechanical properties of nanostructured 316LVM stainless steel annealed under pressure
PBN-AR
Instytucja
Instytut Wysokich Ciśnień Polskiej Akademii Nauk
Źródłowe zdarzenia ewaluacyjne
Informacje podstawowe
Główny język publikacji
EN
Czasopismo
Mechanics of Materials
ISSN
0167-6636
EISSN
Wydawca
Elsevier
Rok publikacji
2013
Numer zeszytu
Strony od-do
25-32
Numer tomu
67
Identyfikator DOI
Liczba arkuszy
1,2
Słowa kluczowe
EN
Severe plastic deformation (SPD)
Hydrostatic extrusion (HE)
Austenitic stainless steel
Nanostructure
Recrystallization
Streszczenia
Język
EN
Treść
In the reported work, the combination of severe plastic deformation (SPD) and annealing under high hydrostatic pressure was used to enhance the ductility whilst maintaining the high mechanical strength possessed by the nanostructured 316LVM stainless steel. The nanostructure was obtained by a multi-step hydrostatic extrusion process to a total true strain of 1.8. This process produced a microstructure consisting of nanotwins and shear bands. The extruded samples were annealed at 700 and 900 °C for 10 min under atmospheric or hydrostatic pressures of 2 or 6 GPa. The resulting microstructures were examined using TEM and FIB techniques. The microstructural observations and X-ray measurements were used to estimate the crystallite sizes. The mechanical properties were determined by microhardness and tensile tests. It was established that annealing under high pressure improved the ductility of the material whilst retaining its high ultimate tensile strength.
Inne
System-identifier
PX-5698c97c810641ecf91a88db
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