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Transformation Induced Plasticity "TRIP" Steel
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=== TRIP Steel Composition === [[File:TRIPSteel Grainstructure.JPG|thumb|Fig 2: Diagram of the grain structure for a typical TRIP steel]] [[File:TRIPSteel SEMmicrograph.JPG|thumb|Fig 3: SEM micrograph showing the typical grain structure of a TRIP steel<ref name="[3]">A. Mark, "Microstructural Effects on the Stability of Retained Austenite in Transformation Induced Plasticity Steels", Ph.D. Thesis, Queen's University, 2007.</ref>]] Trip steels are hypoeutectoid iron carbon alloys which typically contain 0.1 – 0.4 % carbon by weight. TRIP steels also contain alloying elements which prevent the precipitation of the high carbon cementite{{W|cementite}} phase which is present in typical steels at room temperature. This raises the carbon concentration of the austenite phase, which becomes stable at room temperature. Silicon and Aluminium are the two most common elements used to stabilize the austenite phase at room temperature.<ref name="[4]">S. Chatterjee & Al., "Delta TRIP steel", Materials Science and Technology, Vol 23 No 7,819-827, 2007.</ref> Other alloying elements such as titanium, niobium, vanadium…ect. can also be added to improve the strength of the alloy.
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