Question No:-1

__________ is a change in the microstructure of certain carbon steels and 0.5 Mo steels after long term operation in the 800º F to 1100º F range.   1. Graphitization   2. Softening   3. Temper Embrittlement   4. Creep  View Answer Answer:-1. Graphitization

Question No:-2

What structure is 304 stainless steel?   1. Martensitic   2. Austenitic   3. Duplex   4. Ferritic  View Answer Answer:-2. Austenitic

Question No:-3

_________ is the result of cyclic stress caused by variations in temperature.   1. Creep   2. Thermal Fatigue   3. Cyclic Cracking   4. Stress Corrosion Cracking  View Answer Answer:-2. Thermal Fatigue

Question No:-4

General or localized corrosion of carbon steels and other metals caused by dissolved salts, gases, organic compounds or microbiological activities is called ________.   1. Flue Gas Corrosion   2. Atmospheric Corrosion   3. Cooling Water Corrosion   4. None of the Above   5. All of the Above  View Answer Answer:-3. Cooling Water Corrosion

Question No:-5

What structure is 410 stainless steel?   1. Martensitic   2. Austenitic   3. Duplex   4. Ferritic  View Answer Answer:-1. Martensitic