Engineering Materials Hardness of lower bainite (tempered martensite) is about RC 80 RC 48 RC 65 RC 57 RC 80 RC 48 RC 65 RC 57 ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The purpose of heat treatment is to Any one of these Relieve the stresses set up in the material after hot or cold working Modify the structure of the material Change grain size Any one of these Relieve the stresses set up in the material after hot or cold working Modify the structure of the material Change grain size ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials In process annealing, the hypo eutectoid steel is Heated from 30°C to 50°C above the upper critical temperature and then cooled in still air Heated from 30°C to 50°C above the upper critical temperature and then cooled suddenly in a suitable cooling medium Heated below or closes to the lower critical temperature and then cooled slowly Heated from 30°C to 50°C above the upper critical temperature and then cooled slowly in the furnace Heated from 30°C to 50°C above the upper critical temperature and then cooled in still air Heated from 30°C to 50°C above the upper critical temperature and then cooled suddenly in a suitable cooling medium Heated below or closes to the lower critical temperature and then cooled slowly Heated from 30°C to 50°C above the upper critical temperature and then cooled slowly in the furnace ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Tungsten in steel Gives ductility, toughness, tensile strength and anti-corrosion properties Refines grain size and produces less tendency to carburisation, improves corrosion and heat resistant properties Improves cutting ability and reduces hardenability Improves wear resistance, cutting ability and toughness Gives ductility, toughness, tensile strength and anti-corrosion properties Refines grain size and produces less tendency to carburisation, improves corrosion and heat resistant properties Improves cutting ability and reduces hardenability Improves wear resistance, cutting ability and toughness ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials In low carbon steels, ________ raises the yield point and improves the resistance to atmospheric corrosion. Sulphur Phosphorus Manganese Silicon Sulphur Phosphorus Manganese Silicon ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Cobalt in steel Improves wear resistance, cutting ability and toughness Gives ductility, toughness, tensile strength and anti corrosion property Refines grain size and produces less tendency to carburisation, improve corrosion and heat resistant proper ties Improves cutting ability and reduce hardenability Improves wear resistance, cutting ability and toughness Gives ductility, toughness, tensile strength and anti corrosion property Refines grain size and produces less tendency to carburisation, improve corrosion and heat resistant proper ties Improves cutting ability and reduce hardenability ANSWER DOWNLOAD EXAMIANS APP
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