The Tempering Behavior of Carburized Steel

Tuesday, October 24, 2017: 2:20 PM
A210-212 (Greater Columbus Convention Center)
Ms. Jin Guo , Worcester Polytechnic Institute, Worcester, MA
Mr. Tianyi Zhou , Worcester Polytechnic Institute, Worcester, MA
Prof. Richard D Sisson , Worcester Polytechnic Institute, Worcester, MA
The tempering behavior of carburized steels has been experimentally investigated. A variety of steels (AISI 1018, AISI 5120 and AISI 8620) were carburized and quenched to form a 1mm hardened case. These steels were subsequently tempered at temperatures from 200°C to 600°C for times from 15 minutes to 16 hours. The carbon concentration and microhardness profiles were measured for each sample. The results are presented in terms of microhardness versus carbon concentration. The data was analyzed using the Holloman-Jaffe equation as a function of carbon concentration. These results are interpreted in terms of the Holloman-Jaffe constant and microstructural characterization. The results were used to enhance the microhardness prediction in CarbTool©.
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