𝔖 Bobbio Scriptorium
✦   LIBER   ✦

The initiation of ductile failure by fractured carbides in an austenitic stainless steel

✍ Scribed by J.T Barnby


Publisher
Elsevier Science
Year
1967
Weight
864 KB
Volume
15
Category
Article
ISSN
0001-6160

No coin nor oath required. For personal study only.

✦ Synopsis


Fracture of rod-shaped chromium carbide particles in a stainless steel, first observed between 5% and 10% tensile strain, occurs as a result of the concentrated local stresses from matrix slip lines, and a theory describing the condition for fracture of the carbides is in good agreement with the experimental results. Final fracture of the material occurs by the linking-up of the voids formed by the carbide fractures, and consequently the elongation to fracture of the steel is substantially lower than for the same steel without carbide precipitates.

The results for this material suggest that the fracture of brittle fibres in a composite material may also occur as a consequence of the concentrated local stresses from matrix slip lines.

La rupture de baguettes de carbure de chrome dans un a&r inoxydable, d'abord observee pour des deformations de traction comprises entre 5% et, lo%, est le resultat de la concentration locale de contraintes par les lignes de glissement de la matrioe; une thborie dormant la condition de rupture des carbures est en bon accord aveo les r&.ultats expkrimentaux. des carbures entraine finalement la rupture du matbriau;

La jonction des vides form& par la rupture en oon&quence, l'allongement Q la rupture de I'acier est infkrieur, d'une man&e apprAciable, B ce qu'il est pour le mame acier ne contenant pas de pr&ipit& de carbures.

Ces r&ultats suggerent que la concentration locale de contraintes par les lignes de glissement de la matrice peut aussi i?tre It l'origine de la rupture de fibres fragile8 dan un mat&au composk. DIE EINLEITUNG EINES DUKTILEN REISSENS DURCH BRUCHKARBIDE IN EINEM AUSTENITISCHEN ROSTFREIEN STAHL Der Bruch stabfijrmiger Chromkarbidt,eilchen in einem rostfreien Stahl, der zwischen 5% und 10% Zugspannung erstmals auftritt, erscheint als die Folge konzentrierter lokaler Spannungen van Matrixgleitlinien. Eine Theorie zur Beschreibung der Bedingungen fiir den Bruch der Karbide ist in guter ubereinstimmung mit den experimentellen Resultaten. Der Bruch des Materials erfolgt schliedlich durch die Verbindung der durch den Karbidbruch entstandenen Hohlr&ume. Folglich ist die Bruchdehnung dieses Stahles wesentlich kleiner ah diejenige eines Stahles ohne Karbidausscheidungen. Die Ergebnisse an diesem Material lassen vermuten, daD der Bruch sprGder Fasern in einem zusammengesetzten Material such durch konzentrierte lokale Spannungen durch Matrixgleitlinien erfolgen kann.


πŸ“œ SIMILAR VOLUMES


On the Initiation process of pitting cor
✍ A. A. Seys; A. A. van Haute; M. J. Brabers πŸ“‚ Article πŸ“… 1974 πŸ› John Wiley and Sons 🌐 German βš– 939 KB

## Abstract A literature survey has lead to the conclusion that a theory which postulates an increased anodic reactivity on a local site in the passive film is very probable. Experiments have been set up to confirm these suggestions. By means of the electron‐microanalyser, it is shown that CI^βˆ’^ion

In situ investigation of the early stage
✍ K.J. Kurzydlowski; R.A. Varin; W. Zielinski πŸ“‚ Article πŸ“… 1984 πŸ› Elsevier Science βš– 923 KB

The early stages of plastic deformation in stainless steel with a small grain sixe have been studied by in situ straining of a thin foil inside the electron microscope. TEM observations indite that the deformation process has a sequential character: Stuge I-activation of lattice dislocations; Stage

The synergy between deformation and anod
✍ H. Yanliang πŸ“‚ Article πŸ“… 2004 πŸ› John Wiley and Sons 🌐 German βš– 130 KB πŸ‘ 1 views

## Abstract In corrosion medium, metals can deform under tensile stress and form a new active surface with the anodic dissolution of the metals being accelerated. At the same time, the anodic dissolution may accelerate the deformation of the metals. The synergy can lead to crack nucleation and deve