a) A 10g ball bearing sphere is made of a steel containing 2.0 wt% C. Suppose the ball is austenitized and slowly cooled to 1200°C, then to 600°C. Refer Figure 1. i) What is the weight of austenite present? ii) What is the weight of liquid present? iii) What is the total weight of ferrite present? iv) What is the total weight of cementite present? Composition (at% C) 10 15 20 25 1600 1538°C -1493°C 1400 1200 1000 Temperature (°C) 800 600 400 1394°C 0 (Fe) y. Austenite 912°C 0.76 0.022 a, Ferrite 1 y+L 2 2.14 1147°C L 4.30 y + Fe3C a + Fe3C 3 Composition (wt% C) 727°C Cementite (Fe3C) 5 6 2500 2000 1500 1000 6.70 Temperature (°F)

a) A 10g ball bearing sphere is made of a steel containing 2.0 wt% C. Suppose the ball is austenitized and slowly cooled to 1200°C, then to 600°C. Refer Figure 1. i) What is the weight of austenite present? ii) What is the weight of liquid present? iii) What is the total weight of ferrite present? iv) What is the total weight of cementite present? Composition (at% C) 10 15 20 25 1600 1538°C -1493°C 1400 1200 1000 Temperature (°C) 800 600 400 1394°C 0 (Fe) y. Austenite 912°C 0.76 0.022 a, Ferrite 1 y+L 2 2.14 1147°C L 4.30 y + Fe3C a + Fe3C 3 Composition (wt% C) 727°C Cementite (Fe3C) 5 6 2500 2000 1500 1000 6.70 Temperature (°F)

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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