Many simple forms of stainless steel cannot be hardened by heat treatment, even though they contain significant amounts of carbon. Regardless of temperature, these simple stainless steels have an austenite crystal structure, the same crystal structure that normal steel has when it is very hot. Carbon doesn't harden austenitic steels because
A. carbon forms iron carbide or "cementite" in austenitic steels.
B. carbon forms carbon dioxide in austenitic steels.
C. carbon is non-magnetic in austenitic steels.
D. carbon dissolves easily in austenitic steels.
Answer:D
Many simple forms of stainless steel cannot be hardened by heat treatment, even though they contain significant amounts of carbon. Regardless of temperature, these simple stainless steels have an austenite crystal structure, the same crystal structure that normal steel has when it is very hot. Carbon doesn't harden austenitic steels because
A. carbon forms iron carbide or "cementite" in austenitic steels. B. carbon forms carbon dioxide in austenitic steels. C. carbon is non-magnetic in austenitic steels. D. carbon dissolves easily in austenitic steels.