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Showing papers in "Scripta Metallurgica in 1984"


Journal ArticleDOI
TL;DR: In this paper, a detailed analysis of relations empiriques existent entre the constantes elastiques and the temperature de fusion de metaux is presented, in order to determine le domaine dans lequel les constantes leastiques peuvent etre utilises.

544 citations




Journal ArticleDOI
TL;DR: In this paper, the first direct observations of hydrogen-enhanced fracture using in situ fracture studies in H/sub 2/ gas in the environmental cell of a H.V.E.M.

217 citations


Journal ArticleDOI
TL;DR: Mise en evidence, dans un alliage commercial d'aluminium renforce par des whiskers de SiC (SiC/2124 Al) soumis a des traitements thermomecaniques adequats, d'un comportement de type superplastique lors d'une deformation isotherme a des taux de deformation relativement elevees as mentioned in this paper.

205 citations


Journal ArticleDOI
TL;DR: In this article, experimental observations of shear bands, their role in deformation and their significance in the nucleation of recrystallized grains and the development of annealing textures are discussed.

203 citations



Journal ArticleDOI
TL;DR: On montre que les variations des caracteristiques de la microstructure de Al 6061 peuvent etre obtenues par l'introduction d'une quantite importante (23% volume) de carbure de bore as mentioned in this paper.

200 citations


Journal ArticleDOI
TL;DR: In this article, the comportement d'un alliage TiNi monocristallin lors de la transformation martensitique is studied, a memoire deforme de transformation associes.

175 citations


Journal ArticleDOI
TL;DR: In this article, a novel methode for generer l'effet de memoire de forme reversible excessif nomme ARSME, dans des alliages Ti−Ni riches en nickel.

171 citations


Journal ArticleDOI
TL;DR: The authors observed that boron segregates more strongly to grain boundaries than to free surface in Ni/sub 3/Al. This observation was in qualitative agreement with a theory of grain boundary cohesion first put forward by Rice.

Journal ArticleDOI
TL;DR: In this article, a silicon carbide whisker-reinforced aluminum alloy (20% SiC fibers in 2024 aluminum) is shown to exhibit tensile ductilities in the order of 300% when deformed under thermal cycling conditions (100 ⇇ 450° C ) and at low stresses ( σ ⋍ 20 MPa ).

Journal ArticleDOI
TL;DR: In this paper, a two-step thermomechanical processing method for obtaining fully spheroidized structure in UHC steels is described, where the first step is a hot a warm working (HWW) procedure, followed by air cooling.


Journal ArticleDOI
TL;DR: In this paper, the authors studied the transformation characteristics of thin plate martensite in Fe-NiC alloys and showed that the interface is essentially mobile and the transformation is somewhat reversible.

Journal ArticleDOI
TL;DR: In this paper, a series of intermetallic compounds with different physical properties were prepared and irradiated with 2 MeV electrons and the relative ease of amorphous formation has been compared.

Journal ArticleDOI
TL;DR: In this article, a nouvelle microstructure for thealliage Al-2,34% poids Li-1,07% poeds Zr contenant une distribution extremement fine de Al 3 Zr qui sert comme sites preferentiels de germination/croissance for les precipites.

Journal ArticleDOI
TL;DR: Etude experimentale de la relation entre l'orientation and le comportement a la deformation, par des essais de traction sur des echantillons monocristallins as discussed by the authors.

Journal ArticleDOI
TL;DR: In this article, the authors report that l'application concurrente d'impulsions de courant electrique pendant le recuit isochrone du cuivre deforme a froid augmente les vitesses de restauration et de recristallisation and conduit a un affinement de la grosseur du grain and a reduction de la frequence de maclage.

Journal ArticleDOI
TL;DR: In this article, a simple and convenient method to overcome the difficulty is by conducting intermittent unloading tests during a conventional tensile test and by measuring the modulus from the unloading curve.

Journal ArticleDOI
TL;DR: Etude systematique de l'accroissement de the temperature de transformation reversible M s, fonction du temps t s et de la temperature T s de stabilisation d'alliages Cu-Zn-Al martensitiques trempes par etapes.

Journal ArticleDOI
TL;DR: In this paper, it was shown that a reasonable value of γ-cap alpha-delta can be obtained for any system where nucleation is coherent, transformation strains are small and a particle size distribution near grain boundaries while the solute concentration remains constant.

Journal ArticleDOI
TL;DR: In this paper, the first observation of dislocation loops formed in iron by bombardment with self-ions was reported, but only at ion doses exceeding those of previous studies, and the relationship between the defect density and the ion dose is not understood.

Journal ArticleDOI
TL;DR: In this paper, the relationship between intergranular and transgranular fracture modes of hydrogen embrittlement is described. Butterworth et al. showed that the intergranularity fracture is observed when the hydrogen distribution is enhanced at the tip of a notch because either that is the point at which hydrogen enters from the gas phase or concentrates from the solid solution due to the stress field.


Journal ArticleDOI
TL;DR: The micro-roughness of a fracture surface refers to the depth, shape, and aspect ratio of the dimples on the surface which in turn are determined by the mechanism of fracture and by the microstructure as discussed by the authors.


Journal ArticleDOI
TL;DR: In this article, the initial microstructure plays an important role in the fabricability of these composites and several examples of this are provided by their work, such as composites containing low volume fractions of "brittle" chromium.

Journal ArticleDOI
TL;DR: Etude par microscopie electronique en transmission de quelques aspects microstructuraux des transformations de phases associees a l'effet de memoire mecanique reversible extensif (ARSME) dans un alliage Ti-51Ni vieilli dans diverses conditions.

Journal ArticleDOI
TL;DR: The mesure de la resistivite electrique est un moyen tres sensible pour etudier le role effectif de la presence d'un element de transition dans la relaxation structurale.