Corrosion and Materials Free Sample Questions

Covers failure mechanisms such as brittle fracture and creep, uniform and localized corrosion, high-temperature corrosion, environment-assisted cracking, and strong-acid corrosion.

12 free sample questions65 in the full practice test

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API-571 Sample Questions

  1. Question 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. A.GraphitizationB.SofteningC.Temper EmbrittlementD.Creep

    Answer and explanation

    Correct answer: A

  2. Question 2

    What structure is 304 stainless steel? A.MartensiticB.AusteniticC.DuplexD.Ferritic

    Answer and explanation

    Correct answer: B

  3. Question 3

    _________ is the result of cyclic stress caused by variations in temperature. A.CreepB.Thermal FatigueC.Cyclic CrackingD.Stress Corrosion Cracking

    Answer and explanation

    Correct answer: B

  4. Question 4

    General or localized corrosion of carbon steels and other metals caused by dissolved salts, gases, organic compounds or microbiological activities is called ________. A.Flue Gas CorrosionB.Atmospheric CorrosionC.Cooling Water CorrosionD.None of the AboveE.All of the Above

    Answer and explanation

    Correct answer: C

  5. Question 5

    What structure is 410 stainless steel? A.MartensiticB.AusteniticC.DuplexD.Ferritic

    Answer and explanation

    Correct answer: A

  6. Question 6

    The sudden rapid fracture under stress (residual or applied) where the material exhibits little or no evidence of ductility or plastic deformation is called _________. A.885º F EmbrittlementB.Temper EmbrittlementC.Stress Corrosion CrackingD.Brittle Fracture

    Answer and explanation

    Correct answer: D