Cyclic Strain Localization Assessment by Advanced Microscopies

Abstract : The paper reports our interesting results gained during these last years about the role of microstructure on strain localization of three different types of metallic alloys. The benefit of using advanced techniques (TEM, AFM, SEM-ECCI) is pointed out. Strain gradient and strain localization at microscopic scale and strain partition at mesoscopic scale are discussed and allow explanations for crack initiation site, precipitate dissolution or cyclic accommodation.