Wyniki wyszukiwania - BazTech

Ograniczanie wyników

1 Advances in Materials Science

1 2007

Znaleziono wyników: 1

Liczba wyników na stronie

Wyniki wyszukiwania

Sortuj według:

Ogranicz wyniki do:

Impact of machining on the texture, surface stress field, microstructure and corrosion behaviour of metals

Mary N., Vignal V., Bissey-Breton S., Farre J.

Advances in Materials Science

2007

Vol. 7, nr 2(12)

128-140

It is well admitted that machining processes can introduce residual stresses at the surface of machined workpieces and can modify significantly the microstructure and texture in a small volume c1ose to the surface. Such changes are important in controlling the corrosion behaviour of these workpieces in the presence of an aggressive environment and the initiation of fracture processes. Therefore, it is of major importance to quantify residual stresses and texture components and to determine the machining-induced microstructure to understand and predict the corrosion behaviour of modified surfaces. In the present paper, particular attention was paid to pure copper considered as a modeling system. The influence of the nose radius of the tool, the cutting speed and the lubricant on the surface stress field and the surface texture was quantified by means of XRD techniques. On the other band, the microstructural modifications at !be specimen surface and in depth were evaluated using scanning electron microscopy. The electrochemical behaviour of modified surfaces were studied from local measurements in 1M NaClO4 using the electrochemical microcell technique.