When piece of 0.2% carbon steel is heated above third critical point the steel is a solid solution of carbon in gamma iron and called

Related MCQs

• The solid solution carbon in alpha iron obtained on cooling of 0.2% carbon steel which have been heated above the third critical point is called
• In a 0.2% carbon steel which has been heated above the third critical temperature on cooling at the first critical point the austenite remaining in solution is transformed to new structure called
• The consitituent which has a powerful softening effect on cast iron and its presence in cast iron reduces the ability of the iron to retain carbon in chemical combination, is
• The process in which steel is heated 20? to 40?C below the lower critical temperature, held there for a prolonged period and then allowed to cool slowly in the furnace is known as
• The highest percentage of carbon that an iron carbon alloy can have is
• The process of heating iron base alloys to approzimately 40?C above the critical temperature range followed by cooling to below that range in still air at ordinary temperature is known as
• Gamma iron has
• Gamma iron exists at temperatures in the range
• In plain carbon steel as the percentage of carbon increases from 0.2% to 0.8% which of the following decreases?
• The percentage of carbon in low carbon steel is