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University study material for Applied Metallurgy in the Mechanical Engineering degree programme at Politecnico di Milano. The document covers: APPLIED METALLURGY (AM) Prof. Fabrizio D’Errico The 11 exam topics for essay question (Part B) Author: Guido Pacciani AY: 2022-2023   %JTDVTTUIFQIFOPNFOBPGEBNBHFJONFUBMMJDNBUFSJBMTSFMBUFEUPUIFQIFOPNFOPOPGCSJUUMFOFTT 

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University study material for Applied Metallurgy in the Mechanical Engineering degree programme at Politecnico di Milano. The document covers: APPLIED METALLURGY (AM) Prof. Fabrizio D’Errico The 11 exam topics for essay question (Part B) Author: Guido Pacciani AY: 2022-2023   %JTDVTTUIFQIFOPNFOBPGEBNBHFJONFUBMMJDNBUFSJBMTSFMBUFEUPUIFQIFOPNFOPOPGCSJUUMFOFTT 

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APPLIED METALLURGY (AM) Prof. Fabrizio D’Errico The 11 exam topics for essay question (Part B) Author: Guido Pacciani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iscuss the phenomena of damage in metallic materials related to the phenomenon of: brittleness. Þ What is and how does a brittle fracture occur? In metal component, fracture is strongly correlated to the presence of dislocation and their capability to move. Generally, a fracture can be classified as brittle or ductile. The brittle fracture manifests itself with no grossi plastic deformation, through a rapid succession of atomic bonds breaking within the crystal lattice, usually without warning. The sudden detachment of the slipping planes and the absence of the elongated grains are typical elements that permit to ascertainii the brittle fracture. “Cleavage” is the most typical way in which a brittle fracture occurs. In this manner, the fracture of a crystal happens due to the propagation of a…

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