ME 462: Welding Metallurgy

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ME 462 - Welding Metallurgy

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Catalog Description

462 Welding Metallurgy. (Crosslisted with MS&E 462.) Irr; 3cr. Metallurgical principles applied to welding; mechanisms of strengthening, phase equilibria, and microstructure of the weld zone. Modern processes including laser and electron beam welding. P:MS&E 370 or ME 313 and MS&E 350 or cons inst.

Course Prerequisite(s)

MS&E 351 (or 350)

Prerequisite knowledge and/or skills

introductory level materials science

Textbook(s) and/or other required material

Welding Metallurgy, S. Kou, 2nd edition

Course objectives

understand the chemical, physical and metallurgical principles of fusion welding processes
understand weld defects such as loss of strength, embrittlement, cracking, porosity, inclusions and solute segregation, and how to prevent them by selecting the proper welding processes, procedure and materials

Topics covered

Basic welding processes (gas, arc, laser-beam and electron-beam welding)
Heat and fluid flow during welding
Chemical reactions
Residual stresses and distortions
Weld metal solidification (grain structure, subgrain structure, microsegregation, macrosegregation, porosity, inclusions and cracking)
Partially melted zone (liquidation and cracking)
Heat-affected zone (loss of strength, embrittlement and cracking in work-hardened materials, precipitation-hardening materials, transformation-hardening materials and corrosion-resistant materials)

Class/laboratory schedule

9:30 - 10:45 am Tuesday and Thursday
offered every other year

Contribution of course to meeting the professional component

This course contributes primarily to the students' knowledge of engineering topics, and does provide design experience.

The following statement indicates which of the following considerations are included in this course: economic, environmental, ethical, political, societal, health and safety, manufacturability, sustainability.

manufacturability health and safety

Relationship of course to undergraduate degree program objectives and outcomes

This course primarily serves students in the department. The information below describes how the course contributes to the undergraduate program objectives.

ability to apply knowledge of chemistry (chemical reactions), physics (arcs, lasers, electron beams) and engineering (heat transfer, fluid flow, mass transfer, and mechanics) to welding [ABET:3a] ability to design a welding process to meet the requirements of a joint [ABET:3c] ability to identify weld defects and avoid them by choosing the proper welding methods and procedure [ABET:3e] ability to use modern welding techniques, such as friction stir welding and laser-arc hybrid welding [ABET: 3k] understanding professional and ethical responsibilities related to welding, e.g., how defective welds can cause disasters and how welding fume can cause health problems [ABET: 3f] understanding the impact of welding, e.g., how welding affects transpotation in areas such as aircrafts, ships, cars, trains and bridgres [ABET: 3h] understanding the need for continuing education in welding as welding technology advances constantly [ABET: 3i] knowledge of contemporary issues in welding, e.g., the development of new welding processes [ABET: 3j]

Assessment of student progress toward course objectives

Two mid-term exams on the processes, and chemical, physical and engineering principles of welding
Final exam on identifying various weld defects, explaining their causes, and recommending remedies

Person(s) who prepared this description

Sindo Kou

Copyright 2007 The Board of Regents of the University of Wisconsin System
Date last modified: 04-Aug-2007
Content by: deptinfo@me.engr.wisc.edu
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