ENTC 207 Reading Notes Chapter 13 correct answers rated A+ 2023

ENTC 207 Reading Notes Chapter 13a major contribution to the understanding of metal alloys - correct answer application of the equilibrium phase diagram What is a phase - correct answer homogenous component of a metal alloy what is an equilibrium phase diagram - correct answer graph showing phase relationships that occur in a metal alloy as it slowly cool from the molten state Equilibrium is said to exist when - correct answer enough tie is allowed for the occurrence of everything that wants to occur Two main types of sold solutions - correct answer interstitial and substitutional element you add to another element to make an alloy - correct answer solute How can the added element make an alloy - correct answer interstitial or substitutional type of graph when two phases are present - correct answer binary is there such thing as a pure metal - correct answer no tiny treelike structures formed on grains - correct answer dendrites elements with close atomic diameters tend to show solid solubility - correct answer true what is the mush range - correct answer when it is both solid and liquid what is a eutectic metal - correct answer easy melting alloy that has a single melting point composition of iron and carbon that coincides with the transformation from one type of solid to another type of solid - correct answer eutectoid point resulting structure of a eutectoid composition - correct answer pearlite What are inter metallic compounds - correct answer two metals that chemically combine to form a chemical compound with a definite ratio of one element to the other compound that forms in most steels - correct answer Fe3C aka iron carbide diagrams for alloys containing three major elements - correct answer ternary diagrams for alloys containing four major elements - correct answer quaternary what is a tie line/isotherm - correct answer a horizontal line going from a temperature to a point on the phase diagram what are phase relationship calculation - correct answer lever law calculations lever law calculations are an aid to the metallurgist in predicting - correct answer microstructures a steel is an alloy of carbon and iron when - correct answer carbon is within .06% and 2% What is ferrite - correct answer low carbon content BCC iron with carbon in solid solution What are the characteristics of ferrite - correct answer soft, ductile, magnetic What is austenite - correct answer high carbon content FCC iron with carbon in solid solution