Session: 18-10 Metallurgy for the Non-Metallurgist

Paper Number: 81971

81971 - Metallurgy for the Non-Metallurgist 

Title: Metallurgy for the Non-Metallurgist

 

List of Authors:

Xiao Huang – Carleton University, Ottawa, Canada

Paul Lowden – Liburdi Turbine Services, Dundas, Canada

Doug Nagy – Liburdi Turbine Services, Dundas, Canada

 

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.                     Manufacturing -  Casting, forging, powder metallurgy and additive manufacturing; with examples from turbine component manufacture and repair.

iii.                   High Temperature Coatings -  with examples from airfoil coating materials formed by diffusion and thermal-spray overlay processes.

iv.                   Effects of Operation -   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 previousin-person attendance)

Presenting Author: Paul Lowden Liburdi Engineering Ltd

Presenting Author Biography: Paul is a Director of Operations at Liburdi Turbine Services. Paul received a B. Eng. in Metallurgical Engineering from McMaster University in 1981, an M. Eng. in Welding Engineering at the University of Toronto in 1996 and an MBA at Wilfrid Laurier University in 2005.<br/><br/>Paul has over 40 years experience in the fields of high temperature materials and turbine component repair.

Authors:

Paul Lowden Liburdi Engineering Ltd
Xiao Huang Carleton University
Doug Nagy Liburdi Turbine Services