Introduction to basic metallurgy concepts and how they affect the material properties from time of manufacturing through to welding fabrication. We will discuss crystal structures, grain size, effects of welding and how these change the mechanical properties of our engineering alloys. By understanding fundamental physical metallurgy concepts we will evaluate scenarios of how and why we use preheat, PWHT, or place limitations on heat input. Our emphasis on this course will be carbon and low-alloy steels but provide the basis for future courses in stainless and non-ferrous alloys.
Ben A Pletcher, Ph.D, P.E., Bechtel Global Corporation - Welding and Applied Technology Center