Martensite and Martensitic Phase Transformations



Adolf Martens
Adolf Martens
J. K. Mackenzie
J. K. Mackenzie (more detail)

Evolution of martensite

A movie of martensitic transformation in Fe-0.18C-0.2Si-0.9Mn-2.9Ni-1.5Cr-0.4Mo wt% steel, using confocal laser microscopy. The time and temperature are indicated on the left hand corner. The contrast arises from the displacements caused by the phase change from austenite to martensite.

The movie has kindly been supplied for educational purposes by Professor Toshihiko Koseki of Tokyo University.



The crystallographic orientation is available.

ICOMAT79
ICOMAT 79

Transformation Hardening

Movies about Martensite and Bainite

Very Strong Steels






Jewellery made from martensite


Belgian Francqui Chair, Harry Bhadeshia, steels, metallurgy, KU Leuven

Professor Jan van Humbeek at KU Leuven
Belgian Francqui Chair, Harry Bhadeshia, steels, metallurgy, KU Leuven

Jan, collaborated with an artist to produce jewellery, that can be deformed super-elastically. TWEE is the manfacturer.
Belgian Francqui Chair, Harry Bhadeshia, steels, metallurgy, KU Leuven

Belgian Francqui Chair, Harry Bhadeshia, steels, metallurgy, KU Leuven

Belgian Francqui Chair, Harry Bhadeshia, steels, metallurgy, KU Leuven

There are two beautiful jewels, surrounded by a shape memory material net that readily accommodates large elastic deflections
Belgian Francqui Chair, Harry Bhadeshia, steels, metallurgy, KU Leuven

Acknowledgments

The article on the Thermodynamics of Martensite by J. W. Christian has been reproduced with permission from the publishers. The article on Adolf Martens has kindly been provided by Dr P. D. Portella of the Federal Institute of Materials Research and Testing, Germany.


Superalloys Titanium Bainite Martensite Widmanstätten ferrite
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