ESM 450: Phase and Mechanical Properties Laboratory

Instructor: Prof.S.Sampath
Room 105 Old Engineering, Tel 2-9512
Sanjay.Sampath@sunysb.edu

TA: Brian Choi, bchoi@ic.sunysb.edu

A systems approach will be undertaken towards understanding the fundamental of
phase and mechanical properties of materials and its implications on
engineering design and applications: We will use the advanced gas turbine
engine as the main test bed for this laboratory class. Components for advanced
gas turbines provide a rich platform for this laboratory course and will allow
the student to explore fields of metallurgy and ceramics within the context of
an engineering system.

Specific lab classes planned are as follows:
1. Class I: Exploration of Advanced Gas Turbine: A web based study and
      identification of design requirements and materials requirements
2. Class II: continuation of the web study to bring down the principal
      components and relevant materials that are currently being utilized.

Section II: Breakdown into subgroups and the following laboratory experiments will be conducted:

• Using metallographic techniques to identify phases
• Using X-ray diffraction techniques to identify phases
• Using DTA and TGA to observe Phase Transformations
• Using Dilatometry to examine volume change during phase transformations
• Using scanning electron microscopy to identify phases and phase transitions
• Examining mechanical properties of metallic alloys within the context of phases:
  • Tensile behavior of materials
  • Work hardening and precipitation hardening examples
  • Indentation stress strain relationships
• Examining mechanical properties of ceramic materials within the context of phases:
  • Indentation approach to measuring elastic properties
  • Dilatometric methods for examining phase change discontinuities

Section III:
Group projects to use laboratory techniques in design
and development of gas turbine materials.
Specific Laboratory Modules:

1. Identification of phase transformations in ferrous alloys using DTA/TGA techniques
   
2. Examining implications of phase transformations in ferrous alloys on mechanical properties of coatings:
   
3. Microstructural observations of phase transformations in Al-alloys: the electrical resistivity set-up
   
4. Mechanical property observations of age hardened Al-alloys and implications of phase transformation
   
5. Using dilatometric techniques to study phase transformations
   
6. Using x-ray diffraction to identify and isolate phases
   
7. Using metallographic techniques to identify and isolate phases
   
8. Using SEM techniques to identify and isolate phases
   

05/09/2006 JQ.