[New methods concerning the formation of required microstructures: the specific example of Fe-Mn cryogenic materials]

Berghezan, A.;Charles, J.;de Hulst, X.
(1980) Academie des Sciences. Comptes Rendus Hebdomadaires des Seances. Serie C. Sciences Chimiques — Vol. 290, n° 13, p. 235-238 (1980)

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  • Berghezan, A.
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  • Charles, J.
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  • de Hulst, X.
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Abstract
The authors have shown that it is possible to design a `pseudo-composite' structure by profiting from interdendritic segregation in an `as cast' structure at compositions near the austenite and epsiv -martensite regions in Fe-Mn alloys intended for the preparation of new cryogenic materials. In this structure, the center of the dendrites, poor in manganese, undergoes martensitic transformation, thus contributing to reinforcement, while the interdendritic austenite regions-richer in manganese-form a continuous network thus acting as obstacles which renders the propagation of fissures more difficult.
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Berghezan, A., Charles, J., & de Hulst, X. (1980). [New methods concerning the formation of required microstructures: the specific example of Fe-Mn cryogenic materials]. Academie des Sciences. Comptes Rendus Hebdomadaires des Seances. Serie C. Sciences Chimiques, 290(13), 235-238. https://hdl.handle.net/2078.5/76206 (Original work published 1980)