{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

eee_lab_3 - METU Department of Metallurgical and Materials...

Info icon This preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
METU Department of Metallurgical and Materials Engineering Met E 206 Materials Laboratory Experiment III MICROSTRUCTURE OF MATERIALS ERDEM MERMER 1447929 Group 10
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
OBJECTIVE The aim of this experiment is to observe the changes in the microstructures of several ferrous alloys by examining the effects of: - cooling rate - carbon content - plastic deformation. The microstructures of some nonferrous alloys will also be examined. SPECIMENS Steel Grade Processing Route AISI 1060 Furnace Cooling AISI 1060 Air Cooling AISI 1060 Water Quenching AISI 1060 Oil Quenching AISI 1020 Furnace Cooling AISI H13 Air Cooling Brass Annealed Steel Cold Deformed APPARATUS 1- An optical microscope 2- Etching Reagent( 2% Nital) ANSWERS TO QUESTIONS 1- Etching is revealing the microstruture of the material by surface treatment by using an appropriate chemical reagent. We use an acid solution which is 2% Nital for this experiment.In etching , the surface of the material goes into reaction with the acid solution however the high energy regions such as grain boundaries are more reactive than the other regions. As a result of their high energy this regions will go into reaction more than other regions so we observe them easily under microscope becouse of their color since grain boundaries will reflect light at different angles than other regions..As a result etching is very
Image of page 2
important for us and for our studies becouse we can
Image of page 3

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern