WELDENG 7123
Transcript Abbreviation:
Adv Braze Met
Course Description:
Graduate level physical-chemical concepts of brazeability and solderability of metals, ceramics, and glasses and focuses on wetting by liquid filler metals, interfacial reactions, phase compositions of joint metal, hetero-diffusion, liquid embrittlement, as well as strength and reliability of brazed and soldered joints manufactured in aerospace, electronic, optical, mining, and other industries.
Course Levels:
Graduate (5000-8000 level)
Designation:
Elective
General Education Course:
(N/A)
Cross-Listings:
(N/A)
Credit Hours (Minimum if “Range”selected):
3.00
Max Credit Hours:
3.00
Select if Repeatable:
Off
Maximum Repeatable Credits:
(N/A)
Total Completions Allowed:
(N/A)
Allow Multiple Enrollments in Term:
No
Course Length:
14 weeks (autumn or spring)
Off Campus:
Never
Campus Location:
Columbus
Instruction Modes:
In Person (75-100% campus; 0-24% online)
Prerequisites and Co-requisites:
Prereq: 4023 or 7023, and Grad standing; or permission of instructor.
Electronically Enforced:
No
Exclusions:
(N/A)
Course Goals / Objectives:
Provide a basic understanding of the theory of wetting of solid metals and ceramics, including of physical-chemistry of liquid-solid interface and interfacial reactions in brazing and soldering.
Provide a basic understanding of phase formation in brazed joints and at the interface: solid solutions, eutectics, and intermetallcs. Hume-Rothery rules and designing of brazing alloys.
Review of diffusion in brazing and soldering: theory, kinetics, effect on microstructure and mechanical properties of brazed joints. Diffusion exchange between solid and liquid metals. Matano diagram. TLP process.
Basic understanding of erosion and dissolution of base metals in the liquid filler metals. Liquid embrittlement of base metals during brazing.
Evaluation of strength and reliability of brazed joints by margins of safety approach and mechanical testing. Hot strength, creep resistance, and fatigue of brazed joints.
Review of advanced soldering: methods and materials. Reliability of soldered joints.
Review of brazing of refractory metals, ceramics in aerospace applications, as well as glasses and glass-ceramics in optical and electronic applications.
Provide a basic overview of new advanced materials for brazing: flux-cored aluminum filler metals, composite filler metals, high-entropy alloys, amorphous foils, and others.
Give students experience in mechanical testing of brazed or soldered joints and analyze mode of failure.
Allow students to conduct detailed review of technical papers and provide a review to the class.
Check if concurrence sought:
No
Contact Hours:
| Topic | LEC | REC out-of-class | REC in-class | Weekly LAB out-of-class | Weekly LAB in-class |
|---|---|---|---|---|---|
| Theory of wetting of solid metals. Physical-chemistry of liquid-solid interface. Interfacial reactions in brazing and soldering. | 3.0 | 0.0 | 0 | 0.0 | 0 |
| Reactive wetting of ceramics by liquid metals and interfacial reactions. | 1.5 | 0.0 | 0 | 0.0 | 0 |
| Formation of solid solutions, eutectics, and intermetallcs in the joint metals. Hume-Rothery rules and designing of brazing alloys. | 1.5 | 0.0 | 0 | 0.0 | 0 |
| Practical case studies of reactive and non-reactive wetting in brazing and soldering. | 1.0 | 0.0 | 0 | 0.0 | 0 |
| Brazing of superhard materials: silicon carbide, aluminum nitride, diamonds, and boron nitrides. | 2.0 | 0.0 | 0 | 0.0 | 0 |
| Diffusion in brazing and soldering: theory, kinetics, effect on microstructure and mechanical properties of brazed joints. Matano diagram. | 3.0 | 0.0 | 0 | 0.0 | 0 |
| TLP process (diffusion brazing). Solidification of joint metal above solidus of the filler metal. | 1.5 | 0.0 | 0 | 0.0 | 0 |
| Diffusion brazing of titanium and nickel superalloys. Practical case studies. | 1.5 | 0.0 | 0 | 0.0 | 0 |
| Erosion and dissolution of base metals in the liquid filler metals. Liquid embrittlement of base metals during brazing. | 2.0 | 0.0 | 0 | 0.0 | 0 |
| Strength of brazed and soldered joints: a model of multilayer composite material, 3D-stresses, failure criteria to analyze brazed or soldered joints. | 3.0 | 0.0 | 0 | 0.0 | 0 |
| Field tests against FEM modeling. Express test and standard mechanical test of shear strength. | 0.0 | 0.0 | 0 | 3.0 | 0 |
| Evaluation of joint's reliability by margins of safety approach. Classification of defects in brazed or soldered joints. Ductile or brittle modes of mechanical behavior of brazed joints. | 3.0 | 0.0 | 0 | 0.0 | 0 |
| Hot strength, creep resistance, and fatigue of brazed and soldered joints. Fracture surface types. | 3.0 | 0.0 | 0 | 0.0 | 0 |
| Brazing and soldering of dissimilar materials. Practical case studies. | 3.0 | 0.0 | 0 | 0.0 | 0 |
| Advanced soldering: methods and materials. Reliability of soldered joints. Practical case studies. | 3.0 | 0.0 | 0 | 0.0 | 0 |
| Brazing of refractory materials: Mo, Ta, Nb metals, carbon composites, and ceramics. Practical case studies. | 3.0 | 0.0 | 0 | 0.0 | 0 |
| Brazing of glasses and glass-ceramics in optical and electronic applications. Practical case studies. | 1.0 | 0.0 | 0 | 0.0 | 0 |
| New advanced materials for brazing: flux-cored aluminum filler metals, composite filler metals, high-entropy alloys, amorphous foils, and others. | 2.0 | 0.0 | 0 | 0.0 | 0 |
| Total | 38 | 0 | 0 | 3 | 0 |
Grading Plan:
Letter Grade
Course Components:
Lecture
Grade Roster Component:
Lecture
Credit by Exam (EM):
No
Grades Breakdown:
| Aspect | Percent |
|---|---|
| Midterm | 30% |
| Lab work report | 40% |
| Final Exam | 30% |
Representative Textbooks and Other Course Materials:
| Title | Author | Year |
|---|---|---|
| Brazing Handbook, 6th Ed., 2020, AWS, Miami, FL | AWS | |
| Soldering Handbook, 3rd Ed., 1999, AWS, Miami, FL | Paul T. Vianco | |
| Principles of Brazing & Soldering, ASM International, 1993 | Humpston G., Jacobson D. | |
| Wettability at High Temperatures, Pergamon, London, 1999 | Eustathopoulus N., Nicholas M. G., Drevet B. |
ABET-CAC Criterion 3 Outcomes:
(N/A)
ABET-ETAC Criterion 3 Outcomes:
(N/A)
ABET-EAC Criterion 3 Outcomes:
(N/A)
Embedded Literacies Info: