Which microconstituent contributes the highest strength in steels Bainite Marten

Question

Which microconstituent contributes the highest strength in steels Bainite Martensite Pearlite In general, which cooling agent is chosen for producing martensite in the iron carbon system water or oil air cooling in furnace The material you choose for an application should have a ductile-to-brittle transition temperature at tire service temperature above the service temperature below the service temperature One of the reasons that the mechanical properties of ceramics are usually measured through 3-point tests instead of tensile tests as in metallic materials is ceramics are usually lighter than metals ceramics are difficult to machine and handle using grips etc. ceramics usually have higher Young's moduli than metals Which stress - strain curve characterizes a ceramic material? Curve 1 Curve

Explanation / Answer

26) b. martensite

27) b.air

28) a.at the service temperature

29) c. ceranics usually have higher young's modulie than metals

30) b. curve 2

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