PROCESS FOR INDUCING A STATE TO AN ARTICLE, MADE FROM A MEMORY SHAPE ALLOY WITH TWO REVERSIBLE MEMORY STATES, AND ARTICLE OBTAINED IN THIS WAY

摘要

The shaped article with the final shapes and dimensions forming the first shape memory state is subjected to a heat treatment with a view to bringing this article into a crystallographic phase of austenitic type and then to a cooling. The article is then subjected in at least one deformation zone to a so-called education process consisting in imposing a series of thermal and/or mechanical stresses on the said article, over at least one cycle. The stresses are capable of resulting in distortion of the article to bring the latter into a shape position close to its second shape memory state in a martensitic crystallographic state, and then in allowing the article to return to its first shape memory state during a return of the article to the austenitic crystallographic state. Application to electrical contact elements.