Lattice Strain Evolutions in Ni-W Alloys during a Tensile Test Combined with Synchrotron X-ray Diffraction

Tarik Sadat (1, 2) , Damien Faurie (2) , Dominique Thiaudière (3) , Cristian Mocuta (3) , David Tingaud (2) , Guy Dirras (2)

1 LAMIH - Laboratoire d'Automatique, de Mécanique et d'Informatique industrielles et Humaines - UMR 8201
2 LSPM - Laboratoire des Sciences des Procédés et des Matériaux
3 SSOLEIL - Synchrotron SOLEIL

Ni and Ni(W) solid solution of bulk Ni and Ni-W alloys (Ni-10W, Ni-30W, and Ni-50W) (wt%) were mechanically compared through the evolution of their {111} X-ray diffraction peaks during in situ tensile tests on the DiffAbs beamline at the Synchrotron SOLEIL. A significant difference in terms of strain heterogeneities and lattice strain evolution occurred as the plastic activity increased. Such differences are attributed to the number of brittle W clusters and the hardening due to the solid solution compared to the single-phase bulk Ni sample.

Mots clés: metallic composites; synchrotron X-ray diffraction; Ni; Ni-W alloys

Domaines: Mécanique des matériaux [physics.class-ph]

Tarik Sadat, Damien Faurie, Dominique Thiaudière, Cristian Mocuta, David Tingaud, et al.. Lattice Strain Evolutions in Ni-W Alloys during a Tensile Test Combined with Synchrotron X-ray Diffraction. Materials, 2020, 13 (18), pp.4027. ⟨10.3390/ma13184027⟩. ⟨hal-03449197⟩