475 °C Embrittlement
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475 °C Embrittlement
Duplex stainless steel, Duplex stainless steels are a family of alloys with a two-phase microstructure consisting of both Austenite, austenitic (Face centered cubic, face-centred cubic) and Allotropes of iron#Alpha iron (α-Fe), ferritic (Body centered cubic, body-centred cubic) phases. They offer excellent mechanical properties, corrosion resistance, and toughness compared to other types of stainless steel. However, duplex stainless steel can be susceptible to a phenomenon known as embrittlement or duplex stainless steel age hardening, which is a type of aging process that causes loss of Plasticity (physics), plasticity in duplex stainless steel when it is heated in the range of . At this temperature range, Spinodal decomposition, spontaneous phase separation of the ferrite phase into iron-rich and chromium-rich nanophases occurs, with no change in the mechanical properties of the austenite phase. This type of embrittlement is due to precipitation hardening, which makes the mater ...
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Electron Backscatter Diffraction
Electron backscatter diffraction (EBSD) is a scanning electron microscopy (SEM) technique used to study the Crystallography, crystallographic structure of materials. EBSD is carried out in a scanning electron microscope equipped with an EBSD detector comprising at least a Phosphorescence, phosphorescent screen, a compact lens and a low-light Charge-coupled device, camera. In the microscope an incident beam of electrons hits a tilted sample. As backscattered electrons leave the sample, they interact with the atoms and are both elastically Electron diffraction, diffracted and lose energy, leaving the sample at various scattering angles before reaching the phosphor screen forming Kikuchi lines (physics), Kikuchi patterns (EBSPs). The EBSD spatial resolution depends on many factors, including the nature of the material under study and the sample preparation. They can be indexed to provide information about the material's grain Crystal structure, structure, grain Electron crystallogr ...
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