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VCE
Thermal fatigue cracks propagate ________ to the stress and are usually dagger shaped, transgranular and oxide-filled.
A. Axial
B. Diagonal
C. Transverse
D. Angular
Stress relief and stabilization heat treatment of 300 Series SS for maximizing chloride SCC and PASCC resistance can cause ____________ problems, especially in thicker sections.
A. Thermal fatigue
B. Reheat cracking
C. Hydrogen
D. HIC
Corrosion protection in the boiler is accomplished by laying down and continuously maintaining a layer of _____.
A. Manganese
B. Magnetite
C. Carbon monoxide
D. Carbonate