Metallurgy of Steel Heat Treating is a 0.5 CEU course that teaches about common heat treating processes and how they are used to modify the microstructure of steels to obtain specific mechanical properties. Students will learn about the metallurgy of steel, the effects of heat treating temperature and cooling rate on microstructure and properties, and the effects of the interaction between heat treating process parameters and steel composition on steel microstructure and strength.
the Metallurgy of Steel Heat Treating course is divided into eight modules. There is a quiz after each module. The modules are:
- Metallurgy of Steel
- Steel Phase Diagram
- Phase Transformations in Steel
- Annealing and Normalizing
- Through Hardening
- Case Hardening
- Surface Hardening
The course is 0.5 CEUs and takes about 5 hours to complete. Modules are 15 to 40 minutes long. Learners will have 3 months to complete the course. The course will not be accessible to a learner after 3 months.
The Metallurgy of Steel Heat Treating course is suited to design engineers, manufacturing engineers, quality engineers and sourcing specialists
Learners should either take our Principles of Metallurgy course or have basic knowledge of the following topics: solid solution, substitution, interstitial, diffusion, effects of process temperature and time on diffusion and metallurgical changes, metallurgical phase, grain, grain boundary, precipitates and precipitation, tensile testing, and hardness testing.
Course Pass Requirements (all requirements must be satisfied to receive a certificate)
- Complete the course within three (3) months of the registration date.
- Complete all the course quizzes.
- Achieve a score of at least 70% for each quiz within the course.
- Complete an end-of-course survey.
At the end of the Metallurgy of Steel Heat Treating course students will be able to do the following:
- Describe the common metallurgical phases and microstructures found in steels
- Explain how the iron-carbon phase diagram and time-temperature-transformation diagrams are used to predict the phases present in a steel based on a heat treating thermal cycle.
- Describe the thermal cycles and significant process variables for annealing, normalizing, through hardening, tempering, case hardening, and surface hardening processes.
- Relate the interactions between heat treating temperature, heat treating time, cooling rate, and composition on a steel’s microstructure and properties.
- Explain the effects of heating temperature and time steel microstructure and properties.
- Explain the effects of cooling rate on steel microstructure and properties.
- Explain the difference between maximum hardness and hardenability.
- Describe two factors that influence steel hardenability.
- Explain common problems encountered with through hardening, case hardening, and surface hardening processes and how to prevent these problems.
- Describe the effects of case hardening process parameters on case depth, microstructure, and hardness of case hardened steel
- Describe the effects of the process parameters on the hardened layer thickness and microstructure for flame hardening and induction hardening.
- Explain two ways to measure case depth