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AUSTENITIC PHASE [2 records]
Record 1 - internal organization data 2006-07-10
Record 1, English
Record 1, Subject field(s)
- Physics of Solids
Record 1, Main entry term, English
- austenite
1, record 1, English, austenite
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
- austenitic phase 2, record 1, English, austenitic%20phase
correct
- austenite phase 1, record 1, English, austenite%20phase
correct
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
The high-temperature, high-symmetry (cubic) crystal microstructure of shape-memory alloys that changes upon cooling into martensite by a process called "martensitic transformation." 3, record 1, English, - austenite
Record number: 1, Textual support number: 1 OBS
martensite: The low-temperature, low-symmetry (tetragonal) crystal microstructure of shape-memory alloys. 3, record 1, English, - austenite
Record number: 1, Textual support number: 2 OBS
martensitic transformation: A diffusionless solid-to-solid phase transition characterized by a rapid change of crystal structure, observed in metals, alloys, ceramics, and proteins. 4, record 1, English, - austenite
Record 1, French
Record 1, Domaine(s)
- Physique des solides
Record 1, Main entry term, French
- austénite
1, record 1, French, aust%C3%A9nite
correct, feminine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
- phase austénitique 2, record 1, French, phase%20aust%C3%A9nitique
correct, feminine noun
- phase austénite 3, record 1, French, phase%20aust%C3%A9nite
correct, feminine noun
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
Structure cristallographique cubique très symétrique des alliages à mémoire de forme, stable à haute température, qui résulte de la transformation thermoélastique sans diffusion (transformation martensitique) de la martensite lors d'un chauffage. 4, record 1, French, - aust%C3%A9nite
Record number: 1, Textual support number: 1 OBS
martensite : Structure cristallographique tétragonale, stable à basse température. 4, record 1, French, - aust%C3%A9nite
Record 1, Spanish
Record 1, Textual support, Spanish
Record 2 - internal organization data 2000-12-21
Record 2, English
Record 2, Subject field(s)
- Metallurgy - General
- Materials Engineering
Record 2, Main entry term, English
- austenitic phase
1, record 2, English, austenitic%20phase
correct
Record 2, Abbreviations, English
Record 2, Synonyms, English
Record 2, Textual support, English
Record number: 2, Textual support number: 1 CONT
Duplex stainless steels, consisting of approximately equal amounts of austenite and ferrite, often combine the best features of austenitic and ferritic stainless steels. They generally have good mechanical properties, including high strength and ductility, and the corrosion resistance is often better than conventional austenitic grades. This has lead to a growing use of duplex stainless steels as a material in mechanically loaded constructions. However, detailed knowledge regarding its mechanical properties and deformation mechanisms are still lacking. In this project special emphasis has been placed on the residual stresses and their influence on mechanical behaviour of duplex stainless steels. Due to the difference in coefficient of thermal expansion between the two phases, tensile microstresses are found in the austenitic phase and balancing compressive microstresses in the ferritic phase. 2, record 2, English, - austenitic%20phase
Record number: 2, Textual support number: 2 CONT
at elevated temperatures carbon exists in a solid solution with iron; this is the austenitic phase, and the steel would be soft and weak. 3, record 2, English, - austenitic%20phase
Record number: 2, Textual support number: 1 OBS
austenite: Gamma iron with carbon in solution. 4, record 2, English, - austenitic%20phase
Record 2, French
Record 2, Domaine(s)
- Métallurgie générale
- Génie des matériaux
Record 2, Main entry term, French
- phase austénitique
1, record 2, French, phase%20aust%C3%A9nitique
correct, feminine noun
Record 2, Abbreviations, French
Record 2, Synonyms, French
Record 2, Textual support, French
Record number: 2, Textual support number: 1 CONT
La caractéristique importante de ces alliages à mémoires de forme est de présenter, à une température donnée en fonction de la composition chimique, une transformation martensitique thermo-élastique. La transformation martensitique est à distinguer d'autres modifications structurelles qu'un matériau peut subir, par exemple la précipitation, la diffusion ou l'oxydation. C'est en référence aux aciers que l'on appelle phase austénitique, la phase-mère à haute température et phase martensitique, la phase issue de la transformation martensitique. 2, record 2, French, - phase%20aust%C3%A9nitique
Record number: 2, Textual support number: 2 CONT
Outre l'effet mémoire de forme, la transformation martensitique est également responsable de l'effet dit superélastique. L'effet superélastique se traduit par l'induction de martensite sous contrainte, à une température telle que l'on se trouve en phase austénitique, entraînant une déformation du matériau pouvant aller jusqu'à 10 % pour des monocristaux. Au cours de la décharge, la martensite précédemment induite va se retransformer en austénite et l'échantillon retrouve sa forme initiale. 3, record 2, French, - phase%20aust%C3%A9nitique
Record 2, Spanish
Record 2, Textual support, Spanish
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