4. The figure below is shown the isothermal transformation diagram of 1080 steel. Please match the cooling paths (a), (b

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4 The Figure Below Is Shown The Isothermal Transformation Diagram Of 1080 Steel Please Match The Cooling Paths A B 1 (49.8 KiB) Viewed 41 times

4. The figure below is shown the isothermal transformation diagram of 1080 steel. Please match the cooling paths (a), (b), (c), (d), (e), (f), and (g) with the following microstructure in the table that obtained after each case of the heat treatment (15 points). (a) (b) (c) (d) Temperature (°C) , 700 600 500 400 300 M, 200 Mgo I (a) All lower bainite All martensite. All fine pearlite. Approximately 50% lower bainite and 50% martensite. All coarse pearlite. Approximately 50% fine pearlite and 50% martensite. All upper bainite. 1 10 10² 10³ Time (s) (b) 104 105