Atlas of Isothermal Transformation Diagrams: 1953 Supplement |
Contents
Introduction | 5 |
CT Diagram for 4140 Steel | 12 |
Explanation of a Typical Page in the Atlas | 20 |
Copyright | |
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0.5 Inch Diam 1/16 INCH UNITS 1400 A HARDNESS-RC 1550°F Grain Size 200 Calculated Temperature 24 32 DISTANCE 32 40 DISTANCE 40 20 MARTENSITE 40 HARDNESS 20 400 I-T DIAGRAM 50 E-Q HARDENABILITY 60 40 HARDNESS 60 HARDNESS 40 A+ F Ae 3 Ae Ae₁ Austenite F Austenite M=Martensite austenite transformation Austenitized at 1550°F B-None Carburized composition continuous cooling cooling curve DAY I WEEK DIAGRAM I HOUR DISTANCE FROM QUENCHED E-Q HARDENABILITY 0.5 E-Q HARDENABILITY 80 END-1/16 INCH UNITS Estimated Temperature eutectoid Ferrite C=Carbide M=Martensite HARDENABILITY 0.5 Inch HARDENABILITY 80 40 HARDNESS-RC Ae HOUR I DAY I-T DIAGRAM 100 INCH UNITS 40 INCH UNITS HARDNESS INCH UNITS MARTENSITE ISOTHERMAL TRANSFORMATION DIAGRAM M+B+F+P 8 16 MARTENSITE 30 microstructure Ni-Cr-Mo Pearlite HARDNESS percent QUENCHED END 1/16 QUENCHED END-1/16 INCH RC C F RC TEMPERATURE SECONDS 100 SECONDS 60 subsidiary diagram TEMPERATURE 100 TEMPERATURE C F undissolved carbides WEEK 65