Academic literature on the topic 'Laitons alpha'
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Journal articles on the topic "Laitons alpha":
BRUNSCHWIG, P., C. HURTAUD, Y. CHILLIARD, and F. GLASSER. "L’apport de lin dans la ration des vaches laitières : Effets sur la production, la composition du lait et des produits laitiers, les émissions de méthane et les performances de reproduction." INRAE Productions Animales 23, no. 4 (November 14, 2010): 307–18. http://dx.doi.org/10.20870/productions-animales.2010.23.4.3310.
Dissertations / Theses on the topic "Laitons alpha":
Draou, Khaled. "Oxydation de laitons alpha par plasma inductif d'oxygène à basse pression." Rouen, 1997. http://www.theses.fr/1997ROUES026.
Clement, Antoine. "Plasticité et fragilisation par métal liquide des alliages de laitons-alpha CuZn." Thesis, Paris, HESAM, 2022. https://pastel.archives-ouvertes.fr/tel-03920981.
This PHd-thesis deals with the plasticity and liquid mercury embrittlement of α-brass. Differentproperties such as Peierls stress or critical stress intensity factors for dislocation emission at the cracktip were studied as a function of the zinc concentration of the alloys. This study was performed bydeveloping an EAM potential which was then used in a QM/MM approach to combine the advantagesof ab-initio calculations and interatomic potentials. Different grain boundaries were modeled and theirbehavior in contact with liquid metal was observed. A new mechanism of embrittlement by liquidmetal has been revealed with the creation of subsurface cavities
Darque-Ceretti, Evelyne. "De la Composition superficielle des laitons alpha et de son évolution sous bombardement ionique application à l'étude des surfaces de fils d'acier laitonne." Grenoble 2 : ANRT, 1986. http://catalogue.bnf.fr/ark:/12148/cb37596965k.
Beucher, Eric. "Etude de l'oxydabilité de cuivre désoxygéné au phosphore et de laitons monophasés alpha par spectroscopies optiques et par spectrométrie de masse des ions secondaires." Rouen, 1992. http://www.theses.fr/1992ROUE5003.
Rives, Alain. "Oxydation de nuances de cuivres et de laitons-alpha : étude par mesure du potentiel de surface et spectroscopie de photoélectrons induits par rayons X." Lille 1, 1993. http://www.theses.fr/1993LIL10017.
Ezequiel, Alvarado Marco Alejandro. "Mécanismes de fragilisation d'alliages Cu-Zn par l'eutectique Ga-In." Electronic Thesis or Diss., Université de Lille (2022-....), 2023. http://www.theses.fr/2023ULILR005.
This work presents a study of the liquid metal embrittlement (LME) phenomenon at room temperature on alpha brasses with different Zn content in contact with the liquid eutectic Ga-In (EGaIn). The liquid EGaIn wets pure Cu partially with a relatively low contact angle of 49 ± 5 °, which is lower for the alpha brasses and decreases with the Zn content alloy down to 36 ± 5 ° for the Cu-30%Zn alloy. Moreover, the CuGa2 intermetallic forms whenever the liquid EGaIn is in contact with Cu and the alpha brasses, independently of the Zn content. Testing with the 3-point bending test showed that the LME sensitivity by the EGaIn increases at higher strain rates, higher Zn content, and higher hardness. Whenever there is LME, the liquid EGaIn does not affect the fracture initiation but the fracture propagation; hence the samples systematically presented a ductile fracture initiation followed by a brittle intergranular fracture propagation. The CuGa2 intermetallic impedes the brittle fracture initiation by blocking the contact between the EGaIn and the alpha brasses from the early stages of the test. Later, when the intermetallic breaks, the liquid EGaIn comes into contact with the alpha brass making the LME possible if the brass is under sufficient plastic deformation. Due to the ductile fracture initiation, the Cu-30%Zn alloy does not present LME when tested using the standard Small Punch Test (SPT). In contrast, using pre-notched SPT samples enables the observation of this alloy's embrittlement in contact with the liquid EGaIn. Furthermore, due to the ductile fracture initiation, it is impossible to use the bending tests or the SPT to measure the fracture toughness related to the LME phenomenon. In contrast, in-situ micro-bending tests with a W protective layer were suitable for the fracture toughness measurement of Cu-30%Zn in contact with the EGaIn; for instance, a fracture toughness value of 1.57 ± 0.08 MPa m1/2 was measured with the double clamped beam test
Eberhardt, André. "aStructure et comportement mécanique à chaud de bicristaux biphasés de laiton alpha /beta." Metz : Université Metz, 2008. ftp://ftp.scd.univ-metz.fr/pub/Theses/1979/Eberrhardt.Andre.SMZ7901.pdf.
Babin, François. "Effets de la supplémentation des laits artificiels avec l'acide [alpha]-linolénique sur les lipides plasmatiques et érythrocytaires du prématuré." Montpellier 1, 1993. http://www.theses.fr/1993MON13511.
Verdalet-Guzman, Inigo. "Contribution a l'etude des aptitudes fromageres du lait de chevre : influence du polymorphisme genetique de la caseine alpha s1. correction technologique des laits de variants deficients." Caen, 1989. http://www.theses.fr/1989CAEN2051.