Published May 1974
| Version v1
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Study of phase transformations in titanium alloys. I - Contribution to the study of transformation kinetics in Ti 6% Al - 6% V - 2% Sn titanium alloy
Creators
- 1. Cnam Paris (France)
- 2. CEA Bruyeres-le-Chatel 91680 (France)
Description
Studies performed on Ti 6% Al - 6% V - 2% Sn are introduced by a short presentation of a preliminary work on phase transformations in Ti 6% Al - 4% V titanium alloy. T.T.T. curves about transformations of Ti 6% Al - 6% V - 2% Sn show that above 700 deg. C, β (BCC) → α (HCP) is the only active reaction. α' martensite appears below this temperature and until 600 deg. C a double break down takes place: β → α and α' → α + β. Below 600 deg. C, α' remains even after lengthened holdings. Below 500 deg. C, a very important hardening is ascribed to ω phase precipitation. Systematic mechanical tests have allowed to establish relationship between mechanical properties and the most characteristic microstructures. (authors)
Abstract (French)
Un expose rapide d'un travail preliminaire sur les transformations d'un alliage de titane Ta6V introduit l'etude de celles du TA6V6E2. Les courbes T.T.T. relatives aux transformations du Ta6V6E2 montrent qu'au dessus de 700 deg. C c'est la reaction β C.C → α H.C. qui est seule mise en jeu. En dessous de cette temperature apparait de la martensite α' et l'on assiste jusqu'a 600 deg. C a une double decomposition: β → α et α' → α + β. Au-dessous de 600 deg. C, α' subsiste meme apres des maintiens prolonges. Un durcissement tres important au-dessous de 500 deg. C est attribue a la precipitation de phase ω. Des essais mecaniques systematiques ont permis d'etablir la correlation entre les proprietes mecaniques et les etats structuraux les plus caracteristiques. (auteurs)Files
54027894.pdf
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Additional details
Additional titles
- Original title (French)
- Etude des transformations de phase dans les alliages de titane. I - Contribution a l'etude des cinetiques de transformations dans l'alliage de titane TA6V6E2
Publishing Information
- Imprint Pagination
- 71 p.
- Report number
- CEA-R--4542
INIS
- Country of Publication
- France
- Country of Input or Organization
- France
- INIS RN
- 54027894
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- ALUMINIUM ALLOYS; CHEMICAL REACTION KINETICS; CRYSTALLOGRAPHY; CRYSTAL-PHASE TRANSFORMATIONS; DILATOMETRY; GRAIN BOUNDARIES; GRAIN GROWTH; HARDENING; HARDNESS; ISOTHERMAL PROCESSES; MARTENSITE; PRECIPITATION; QUENCHING; TEMPERATURE DEPENDENCE; TIN ALLOYS; TITANIUM ALLOYS
- Descriptors DEC
- ALLOYS; CARBON ADDITIONS; IRON ALLOYS; KINETICS; MECHANICAL PROPERTIES; MICROSTRUCTURE; PHASE TRANSFORMATIONS; REACTION KINETICS; SEPARATION PROCESSES; THERMAL ANALYSIS; TRANSITION ELEMENT ALLOYS
Optional Information
- Notes
- 14 refs.; Available from the INIS Liaison Officer for France, see the INIS website for current contact and E-mail addresses