What is the region between liquidus and solidus lines?Ī) Two-phase region where liquid and solid coexistĬlarification: The intermediate region between liquidus and solidus lines is the two-phase region where liquid and solid coexists. What is the equation for liquid mass fraction of this given phase diagram?Ĭlarification: C α is composition of solid, C L is composition of liquid, C 0 is composition of alloy.ġ0. the tie line must be utilized in conjunction with a procedure that is often called the lever rule.ĩ. According to the given figure, which of the following is used to determine the amount of each phase in a mixture?Ĭlarification: For two phase system lever rule helps i.e. Calculate the % of liquid and solid at 1300☌.Ĭlarification: The tie line at 1300ﹾC intersects solidus at 58% Ni and liquidus at 45% Ni.Īpply the lever rule to get the liquid fraction You should therefore spend some time reviewing this material. A 53% Ni Cu-Ni alloy is cooled from the liquid state to 1300☌. Ternary Phase Diagrams In our discussion of ternary phase diagrams, we will first review and then expanding on material covered last semester in Earth Materials on binary and ternary phase diagrams. It takes the help of a tie-line at a given temperature.ħ. What is used for the determination of Phase amounts?Ī) Tie line and Temperature–Composition PointĬlarification: Lever rule is used to determine the relative amount of each phase in a mixture. And the given phase diagram denotes the Cu-Ni phase diagram.Ħ. What is the α region in the given phase diagram?Ĭlarification: α-region is a substitutional solid solution of two components A and B. What is the XY line in the given phase diagram?Ĭlarification: To find the composition of the individual phases in the two phase region, a line (XY) is drawn and its intercepts on the liquidus and solidus lines. This kind of system is known as _Ĭlarification: Isomorphous phase diagram is the phase diagram in which the two components are soluble in each other over an entire range of composition in both solid and liquid phases.Ĥ. It can be noted that the two substances are soluble in each other in the entire range of compositions in both liquid and solid state. At the temperature just below this line crystal of solid solution start forming.ģ. The line above which the alloy is liquid is called _Ĭlarification: The liquidus line is the line above which the alloy is liquid. How many components are present in binary phase system?Ĭlarification: In binary phase system there will be only two components.Ģ. Materials Science Mcqs on “Binary Phase Diagrams”.ġ.
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