Description
Estimated time: 7 hours
Language: English
Summary of the lecture
This course is based on Practical Guidelines for the Fabrication of Austenitic Stainless Steels (Second Edition, 2020), published by the International Molybdenum Association (IMOA) .
It provides practical, experience-based guidance for engineers, fabricators, inspectors, and end users involved in the specification, processing, fabrication, welding, and finishing of austenitic stainless steel products. The publication explains the fundamental metallurgical principles governing austenitic stainless steels, including phase constitution, alloying effects, and the formation of detrimental secondary phases, and relates these principles directly to fabrication behavior and in-service performance .
The course focuses on fabrication-related topics such as hot and cold forming, cutting, machining, heat treatment, welding, mechanical joining, surface finishing, and post-fabrication cleanup. Drawing on established standards and industry practice, the course supports informed fabrication and handling decisions that reduce fabrication-related defects and ensure reliable performance of austenitic stainless steels in both standard and demanding applications.
What you will learn:
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- Understand the fundamental metallurgy of austenitic stainless steels, including crystal structure, phase constituents, alloying effects, and the influence of composition and thermal history on mechanical properties and corrosion resistance.
- Explain the role of key alloying elements—such as chromium, nickel, molybdenum, nitrogen, carbon, and stabilizing elements—in controlling austenite stability, strength, work hardening behavior, and resistance to corrosion and sensitization.
- Identify and describe detrimental secondary phases (such as chromium carbides, sigma, chi, and other intermetallic phases), including the temperature ranges and kinetic conditions under which they form, and their impact on toughness and corrosion performance.
- Evaluate the effects of fabrication processes—including hot, warm, and cold forming; cutting; machining; and heat treatment—on microstructure, strength, ductility, and surface condition.
- Apply recommended welding, brazing, and soldering practices to control heat input, minimize distortion, avoid sensitization and intermetallic precipitation, and maintain corrosion resistance and mechanical integrity in welded components.
- Assess the influence of surface condition, contamination, and post-fabrication cleanup on corrosion resistance, and select appropriate cleaning, pickling, passivation, or electropolishing methods to restore and protect fabricated surfaces.
- Interpret relevant material specifications, mechanical property data, and fabrication guidelines to support sound material selection, fabrication planning, and quality control for austenitic stainless steel components in industrial service.
Course includes
- 1 Lesson
- Steel Applications
