Engineering Materials Points of arrest for iron correspond to Stages at which properties do not change with increase in temperature There is nothing like points of arrest Stages at which allotropic forms change Stages at which further heating does not increase temperature for some time Stages at which properties do not change with increase in temperature There is nothing like points of arrest Stages at which allotropic forms change Stages at which further heating does not increase temperature for some time ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Dow metal contains 90% magnesium and 9% aluminium with some copper 90% aluminium and 90% copper 92.5% aluminium and, 4% copper, 2% nickel and 1.5% Mg 94% aluminium, 4% copper and 0.5% Mn, Mg, Si and Fe 90% magnesium and 9% aluminium with some copper 90% aluminium and 90% copper 92.5% aluminium and, 4% copper, 2% nickel and 1.5% Mg 94% aluminium, 4% copper and 0.5% Mn, Mg, Si and Fe ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The lower critical temperature Depends upon the rate of heating Increases as the carbon content in steel increases Decreases as the carbon content in steel increases Is same for all steels Depends upon the rate of heating Increases as the carbon content in steel increases Decreases as the carbon content in steel increases Is same for all steels ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The heat treatment process used for softening hardened steel is Carburising Tempering Normalizing Annealing Carburising Tempering Normalizing Annealing ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The lower critical point for all steels is 700°C 600°C 913°C 723°C 700°C 600°C 913°C 723°C ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Hardness of upper bainite (acicular structure) is about RC 80 RC 48 RC 65 RC 57 RC 80 RC 48 RC 65 RC 57 ANSWER DOWNLOAD EXAMIANS APP
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