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Steel with a 0.77% carbon and below 727°C exists as a 2-phase solution of Ferrite and Cementite. This Ferrite-Cementite solid solution is also known as:
选项：

A: Martensite
B: Pearlite
C: Goodnite
D: Cementite
E: Ferrite

发布时间：2024-04-23 21:18:56

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相关试题

1.Steel with a 0.77% carbon and below 727°C exists as a 2-phase solid solution of Ferrite and Cementite. This Ferrite-Cementite solid solution is also known as: 选项：A、Martensite B、Pearlite C、Dendrite D、Austenite E、Bainite
2.Steel with a 0.25% carbon and below 727°C exists as a solid solution that is a mix of Pearlite and of a form of iron known as: 选项： A、Ferrite B、Dendrite C、Martensite D、Austenite E、Bainite
3.The low temperature ledeburite structure in FERRO-CARBON alloys is a mechanical mixture composed of (). 选项： A、Ferrite and pearlite B、Ferrite and austenite C、Pearlite and cementite D、Ferrite and cementite
4.A two –phase mixture of ferrite and cementite is 选项： A:Austenite; B:Martensite; C:Ledeburite; D:Pearlite
5.A two –phase mixture of ferrite and cementite is 选项： A、Austenite B、Martensite C、Ledeburite D、Pearlite
6.Microstructures of plain carbon steels include ( ).选项： A:ferrite B:pearlite C:martensite D:ledeburite
7.In the pearlite transformation, the new phase sharply differ in their composition from the initial phase. For ferrite which has( ) percent carbon, and cementite which contains( ) percent carbon 选项： A、0.77 B、0 C、4.3 D、6.67
8.Pearlite is a two-phased, lamellar structure composed of alternating layers of (). 选项： A、ferrite and cementite B、austenite and cementite C、austenite and ferrite D、liquid and cementite
9.(计算题)For a 99.50wt% Fe–0.50 wt% C alloy at a temperature just below the eutectoid, determine the following:(a) The fractions of total ferrite and cementite phases (b) The fractions of the proeutectoid ferrite and pearlite (c) The fraction of eutectoid ferrite
10. Compute the mass fractions of ferrite and cementite in pearlite.
11.Among the basic structures of the iron-carbon alloys consisting of the basic phases, （）does not belong to the single phase structure. 选项： A、ferrite B、austenite C、pearlite D、cementite
12. A 0.25 percent C hypoeutectoid plain-carbon steel is slowly cooled from 950℃a temperature just slightly below 723℃.(a) Calculate the weight percent proeutectoid ferrite in the steel.(b) Calculate the weight percent eutectoid ferrite and weight percent eutectoidcementite in the steel.
13.A two –phase mixture of ferrite and cementite isA.AusteniteB.MartensiteC.LedeburiteD.Pearlite
14.Steel is an interstitial solid solution with impurity carbon atoms in iron crystal lattice选项： A:正确; B:错误
15.Steel is an interstitial solid solution with impurity carbon atoms in iron crystal lattice 选项： A、正确 B、错误
16.The form of iron-carbon phase can be divided into ( ). 选项： A:Ferrite; B:Austenite; C:Cementite; D:Graphite
17.The form of iron-carbon phase can be divided into ( ).选项： A:ferrite; B:austenite; C:cementite; D:graphite

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Steel with a 0.77% carbon and below 727°C exists as a 2-phase solution of Ferrite and Cementite. This Ferrite-Cementite solid solution is also known as: 选项： A: Martensite B: Pearlite C: Goodnite D: Cementite E: Ferrite

Steel with a 0.77% carbon and below 727°C exists as a 2-phase solution of Ferrite and Cementite. This Ferrite-Cementite solid solution is also known as:
选项：

A: Martensite
B: Pearlite
C: Goodnite
D: Cementite
E: Ferrite