- The microstructure for AISI 1080 carbon steel after heat 760°C then For AISI 1080 carbon steel, heat to 760°C after suitable holding time, cool rapidly to 650°C, hold for 90s, then quench to room temperature. A. 50% martensite 50% perlite B.100% pearlite C. 50% bainite 50% pearlite D. 100% bainite -The microstructure for AISI 1080 carbon steel after heat to 760°C then rapidly cool to 600°C, hold for 4 s, rapidly cool to 450°C, hold for 100 s, then quench to room temperature. A. 50% pearlite, 25% bainite, and 25% martensite B. 50% pearlite 50% bainite C. 25% pearlite, 25% bainite, and 50% martensite D. 50% pearlite, 50% martensite - The microstructure for AISI 1080 carbon steel after heat to 760°C then cool rapidly to 400°C, hold for 15 s, then quench to room temperature A. 100% martensite B. 100% bainite C. 50% bainite 50% martensite D. 25%bainite 75% martensite

- The microstructure for AISI 1080 carbon steel after heat 760°C then For AISI 1080 carbon steel, heat to 760°C after suitable holding time, cool rapidly to 650°C, hold for 90s, then quench to room temperature. A. 50% martensite 50% perlite B.100% pearlite C. 50% bainite 50% pearlite D. 100% bainite -The microstructure for AISI 1080 carbon steel after heat to 760°C then rapidly cool to 600°C, hold for 4 s, rapidly cool to 450°C, hold for 100 s, then quench to room temperature. A. 50% pearlite, 25% bainite, and 25% martensite B. 50% pearlite 50% bainite C. 25% pearlite, 25% bainite, and 50% martensite D. 50% pearlite, 50% martensite - The microstructure for AISI 1080 carbon steel after heat to 760°C then cool rapidly to 400°C, hold for 15 s, then quench to room temperature A. 100% martensite B. 100% bainite C. 50% bainite 50% martensite D. 25%bainite 75% martensite

Precision Machining Technology (MindTap Course List)

2nd Edition

ISBN:9781285444543

Author:Peter J. Hoffman, Eric S. Hopewell, Brian Janes

Publisher:Peter J. Hoffman, Eric S. Hopewell, Brian Janes

Chapter2: Measurement, Materials, And Safety

Section2.7: Heat Treatment Of Metals

Problem 4RQ: What type of hardening operation that leaves the inner core in a softer condition is sometimes...

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