COLD WELDING AND FRETTING TESTS ON QUASICRYSTALS AND RELATED COMPOUNDS

Muriel Sales (1) , Andreas Merstallinger (2) , Pierre Brunet (3) , Marie-Cécile de Weerd (3) , Varsha Khare (3) , Gerhard Traxler (4) , Jean-Marie Dubois (3)

1 ARCS - Austrian Research Center Seibersdorf
2 aerospace material technology
3 LSG2M - Laboratoire de Science et Génie des Matériaux et de Métallurgie
4 Austrian Aerospace

This paper reports a vacuum or space related effect, which is referred to as “cold welding”, “adhesion” or “sticking”. This effect is studied for bulk quasicrystal [1] versus different kinds of counterparts (steel, aluminium, titanium, hard metals). Full series of samples, prepared either by crystal-pulling techniques (single crystals) or by sintering (multi-grain samples) were analysed by fretting tests. Four alloy systems were investigated: Al-Pd-Mn, Al-Cr-Fe-B, Al-Cu-B and Al-Cu-Fe-B, with different crystallographic structures and nominal compositions. These materials, especially icosahedral phases, exhibit the absence of cold-welding in vacuum versus certain steels.

Mots clés: Physical Sciences

Muriel Sales, Andreas Merstallinger, Pierre Brunet, Marie-Cécile de Weerd, Varsha Khare, et al.. COLD WELDING AND FRETTING TESTS ON QUASICRYSTALS AND RELATED COMPOUNDS. Philosophical Magazine, 2006, 86 (06-08), pp.965-970. ⟨10.1080/14786430500313838⟩. ⟨hal-00513608⟩