65093 - Metallurgy for the Non-Metallurgist 

Title: Metallurgy for the Non-Metallurgist

List of Authors:

Xiao Huang – Carleton University, Ottawa, Canada

Ashok Koul – Life Prediction Technologies, Ottawa, Canada

Paul Lowden – Liburdi Turbine Services, Dundas, Canada

Doug Nagy – Liburdi Turbine Services, Dundas, Canada

Jacqueline Wahl – Canon Muskegon Corporation, Muskegon, Michigan

Description:

Gas turbine design and performance is constrained by the properties of the materials from which the hot section components have been manufactured.  This tutorial covers three main areas of metallurgical and materials engineering activity; alloy design, manufacturing processes and material service behaviour.  Application examples will be drawn from throughout the gas turbine industry. 

i.                 Alloy Design and Basic Metallurgical Concepts  - A review of basic metallurgical principles; alloys, phases, microstructure, strengthening mechanisms and  environmental resistance with a specific focus on superalloys

ii.                Metallurgical Processing I:  Casting, forging, powder metallurgy and additive manufacturing; with examples from turbine component manufacture and repair.

iii.               Metallurgical Processing II:  Coating; with examples from airfoil coating materials formed by diffusion and thermal-spray overlay processes.

iv.               Metallurgical Investigation:  Service behaviour, damage mechanisms and metallurgical analysis of turbine components

Key Learning Objectives:

The tutorial is targeted to non-metallurgists whose exposure to metallurgy and materials may have been limited to a general introductory undergraduate metallurgy course.  Attendees should come away with:

i.                 An understanding of how superalloys develop their unique properties

ii.                Familiarity with the processes used to manufacture turbine hot section components

iii.               Basic understanding of the types of high temperature coatings, their function and how they are applied

iv.               An appreciation for how turbine hot section materials may degrade due to operation in a turbine

Preferred Session Slot: 3 hours

Expected Audience Size:  50 (based on previous in-person attendance)