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一、镇空:(20分) 1.ak;σ-1 2.体心立方;面心立方3.晶核的形成和晶核的长大 4.温度;成分5.Ac_3+(30-80℃) 6.等温冷却;连续冷却7.扩散 8.蒸汽膜阶段;沸腾阶段;对流阶段9.右 10.石墨;碳化物(渗碳体)11.耐火材料;保温材料;炉用金属材料二、判断正误:(10分) 1.(×) 2.(×) 3.(○) 4.(○) 5.(×)6.(×) 7.(○) 8.(○) 9.(×) 10.(○)三、解词:(每题2分,共10分)1.同素异构转变:金属在固态下晶格随温度而改变的现象。
First, the town empty: (20 points) 1.ak; σ-1 2. Body-centered cubic; face-centered cubic 3. The formation of nuclei and the growth of the nuclei 4. Temperature; Composition 5.Ac_3 + (30-80 ℃ ) 6. Isothermal Cooling; Continuous Cooling 7. Diffusion 8. Steam Membrane Phase; Boiling Phase; Convection Phase 9. Right 10. Graphite; Carbide (Cementite) 11. Refractory; Insulation Materials; Furnace Metal Materials II. (10 points) 1. (×) 2. (×) 3. (○) 4. (○) 5. (×) 6. (×) 7. (○) 8. (○) 9. ( ×) 10. (○) Third, the solution: (2 points for each question, a total of 10 points) 1. Allotropic transformation: metal in the solid state lattice with the temperature change phenomenon.