Carbon steel carburized

Kohlungs-mittel, n. carbonizing (or carburizing) agent. -Stahl, m. cementation steel. 

Figure 6 illustrates a more complicated situation. The sample was a plain iron-carbon steel—an iron foil carburized to about 5 atomic % carbon and then quenched. One sees a rather complex pattern. There is a large central peak from some untransformed high temperature face-centered phase of iron containing carbon in solid solution, retained austenite. There is a strong six-line pattern coming from martensite, a distorted body-centered solid solution of carbon in iron. We also see a... 

Pack and go carburizing creaie a diffused caiboii case. Base metals arc low -carbon steels and low -carbon alloy steels. Process temperature range is XIS-9.KO C H500 2000 F>. 

Carbides Steel, nitriding Steel, carburizing Steel, water-hardening Steel, oil-hardening Steel, air-hardening Nickel, cobalt alloy Steel, prehardened 44 Rc Beryllium, copper Steel, prehardened 28 Rc Aluminum bronze Steel, low alloy 6t carbon Kirksite (zinc alloy) Aluminum, alloy Brass... 

Low-carbon steel can be hardened in order to improve the wear resistance by carburizing. Steel is carburized by exposing it to gas, liquid, or solid, which provides a high carbon concentration at the surface. Given the percentage carbon versus depth graphs for various times at 930°C, how can the diffusion coefficient be estimated from the graphs ... 

Cao Y, Ernst, E, and Michal, G. M. 2003. Colossal carbon supersaturation in austenitic stainless steels carburized at low temperature. Acta Materialia 51 4171-4181. 

Carbon steels, wrought carburized, quenched tempered 77 (531) 46 (317)... 

Case hardening, for example, carburizing, caibonitriding for low-carbon steels... 

Case hardening, that is, carburizing or carbonitriding, of low-carbon steels to give high hardness and wear resistance... 

Fig. 6. (a) The effect of sub2ero cooling on the hardness gradient in a carburized and quenched 3312 steel where (e) is oil quenched from 925 to 20°C and ( ) is cooled to -195°C. The initial quench to 20°C does not convert all of the austenite to martensite because the high carbon content in the surface region lowers the temperature below 20°C. Subsequent cooling to -195°C converts most of the retained austenite to martensite, raising the hardness, (b) The... 

In ancient India, a steel called wootz was made by placing very pure kon ore and wood or other carbonaceous material in a tightly sealed pot or cmcible heated to high temperature for a considerable time. Some of the carbon in the cmcible reduced the kon ore to metallic kon, which absorbed any excess carbon. The resulting kon—carbon alloy was an excellent grade of steel. In a similar way, pieces of low carbon wrought kon were placed in a pot along with a form of carbon and melted to make a fine steel. A variation of this method, in which bars that had been carburized by the cementation process were melted in a sealed pot to make steel of the best quaUty, became known as the cmcible process. 

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