METE466 POWDER METALLURGY
| Course Code: | 5700466 |
| METU Credit (Theoretical-Laboratory hours/week): | 3 (3.00 - 0.00) |
| ECTS Credit: | 5.0 |
| Department: | Metallurgical and Materials Engineering |
| Language of Instruction: | English |
| Level of Study: | Undergraduate |
| Course Coordinator: | Prof.Dr. ALİ KALKANLI |
| Offered Semester: | Fall Semesters. |
Course Objectives
To understand the benefit of powder metallurgy, the unique applications of PM technique, to learn powder production techniques and specific case studies which require special premixed and prealloyed powders. To study the principles of all powder characterization techniques and powder size ranges for each technique. Tailoring powders for compaction, Sintering and sinter atmosphere conditions containing phase equilibria principles. Powder production techniques and relationship between powder size shape and production techniques. To study physical metallurgical fundamentals to understand sintering mechanisms and diffusion events to increase density during sintering.
Course Content
Principles of the P/M process. Powder characterization, properties of metal powders and their testing. Methods of metal powder production. Precompaction powder handling. Compaction processes. Densification mechanisms. Sintering theory. Liquid phase and activated sintering. Sintering atmospheres and furnaces. Full density processing. Finishing operations. Compact characterization.
Course Learning Outcomes
Correlate the processing techniques and powder shapes and particle size distribution;
Characterize the metal and ceramic powders, perform screen analysis, measure mean particle size and draw log-log or semi log particle size distributions; Propose a suitable metal powder production technique for a particular P/M problem;
Measure the flow, apparent and tap densities, predict the shape and interparticle friction for an unknown powder sample;
Prepare powder mixtures containing lubricants and perform green compaction, measure compaction ratios for a particular geometry;
Chose the correct atmosphere, temperature and furnaces for sintering, identify the sintering stages, measure the sintered densities;
Propose correct processing conditions and alloy specifications for pore elimination and densification;
Calculate the chamber size of an atomizer, solidification time and cooling rate of a droplet, optimum rotation speed of a mixer or ball mill, average or transmitted pressure during compaction, ejection pressure, fractional porosity as a function of applied pressure, stress associated with curvature difference during sintering, grain size of a P/M material after sintering;
Explain creep mechanisms and ways to achieve full density by HIP and hot pressing, basic principles of liquid phase and activated sintering.
Program Outcomes Matrix
| Contribution | |||||
| # | Program Outcomes | No | Yes | ||
| 1 | An ability to identify, formulate, and solve complex engineering problems by applying principles of engineering, science, and mathematics | ✔ | |||
| 2 | An ability to apply engineering design to produce solutions that meet specified needs with consideration of public health, safety, and welfare, as well as global, cultural, social, environmental, and economic factors | ✔ | |||
| 3 | An ability to communicate effectively with a range of audiences | ✔ | |||
| 4 | An ability to recognize ethical and professional responsibilities in engineering situations and make informed judgments, which must consider the impact of engineering solutions in global, economic, environmental, and societal contexts | ✔ | |||
| 5 | An ability to function effectively on a team whose members together provide leadership, create a collaborative and inclusive environment, establish goals, plan tasks, and meet objectives | ✔ | |||
| 6 | An ability to develop and conduct appropriate experimentation, analyze and interpret data, and use engineering judgment to draw conclusions | ✔ | |||
| 7 | An ability to acquire and apply new knowledge as needed, using appropriate learning strategies | ✔ | |||
| 8 | Knowledge of the scientific and engineering principles underlying the four major elements of the field; structure, properties, processing and performance related to material systems | ✔ | |||
| 9 | An ability to apply and integrate knowledge from each of the four major elements of the field to solve materials and/or process selection and design problems | ✔ | |||