Learning on ScreenMartensitic Transformation of Nickel-Chromium Steel
- Synopsis
- Shows the development of the martensite from the super-cooled austenite in the needle profile, formed by the sudden change of volume, of a polished surface of a chrome-nickel steel under the heating table microscope. The grain boundaries of the high temperature phase of the austenite also become visible. The shots are taken during the cooling off after an austenitisation at 1150 degrees Celsius. They begin at about 300 degrees C. just above the Ms-temperature, the start of the martensite formation. It can be seen that the austenite-martensite transformation continues in the form of constantly new plate formation with decreasing temperatures. The development of one particular martensite plate cannot be observed owing to the high speed. The needles lie within a former austenite grain in certain preferred directions. An Encyclopaedia Cinematographica film.
- Language
- English
- Country
- Germany
- Medium
- Film; Film. 16mm. st. b&w. 5 min.
- Technical information
- Black-and-white / Sound
- Year of production
- 1966
- Availability
- Hire
- Documentation
- Booklet in German supplied.
- Uses
- Illustrative material for students of metallurgy.*
- Subjects
- Technology
- Keywords
- metals; stainless steel; steel
Credits
- Writer
- A Rose; H P Hougardy
- Contributor
- G Hummel; K W Bosak
Distribution Formats
- Type
- Film
- Format
- 16mm
Production Company
Distributor
- Name
Higher Education Film & Video Library
- services@bufvc.ac.uk
- Web
- http://bufvc.ac. External site opens in new window
- Phone
- 020 7393 1503
- Fax
- 020 7393 1555
- Address
- c/o British Universities Film & Video Council
77 Wells Street
London
W1T 3QJ - Notes
- Catalogue available from British Universities Film & Video Council.
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