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Full Record for Micrograph 741
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- Micrograph no
- 741
- Brief description
- A medium carbon low alloyed structural steel
- Keywords
- Categories
- System
- Fe-C-X
- Composition
- Fe, C medium (wt%), with small alloy addition
- Standard codes
- Reaction
- Processing
- Hot rolled and normalized.
- Applications
- Sample preparation
- Sample polished as such (without any mounting). Etched first with 4% Picral to reveal the pearlite and bainitic structure and then etched in SMB solution to reveal further microstructural constituents.
- Technique
- Reflected light microscopy
- Length bar
- 30 μm
- Further information
- The steel sample was etched in 4% picral solution first and revealed the presence of pearlite and carbides distinctly. Further tint etching in SMB resulted in the straw coloured martensite to appear as a band. Retained austenite is appearing as very fine white particles. The bainite is appearing as bluish-black background between the martensite constituents. Coarse dark grains are pearlite. Microhardness measurements and SEM studies further proved the constituents identity. Conventional nital etching is not successful in delineating all the micro-constituents so distinctly.
- Contributor
- Dr Amar K De
- Organisation
- ASPPRC, Metallurgical and Materials Engineering Department, Colorado School of Mines
- Date
- 22/04/03
- Licence for re-use
Attribution-Non-Commercial-Share Alike 2.0 UK: England & Wales- Related micrographs