INVESTIGADORES
GALANO Marina Lorena
artículos
Título:
Yield behavior beneath hardness indentations in ductile metals, measured by three-dimensional computed X-ray tomography and digital volume correlation
Autor/es:
M. MOSTAFAVI; D.M. COLLINS; B. CAI; R. BRADLEY; R.C. ATWOOD; C. REINHARD; XIA JIANG; MARINA GALANO; P LEE; JAMES MARROW
Revista:
ACTA MATERIALIA
Editorial:
PERGAMON-ELSEVIER SCIENCE LTD
Referencias:
Lugar: Amsterdam; Año: 2015 vol. 82 p. 468 - 482
ISSN:
1359-6454
Resumen:
Plastic deformation in the vicinity of hardness indentations in two ductile metals, an aluminium?silicon carbide composite (Al?SiC) and a cast magnesium alloy (WE43), was characterized. Using in situ and ex situ X-ray computed tomography with digital volume correlation, the threedimensional full-field displacements beneath the indentations were measured; these show strong agreement with simulated predictions using finite element models. It is demonstrated that plastic material properties, i.e. yield stress and hardening exponent, may be extracted via analysis of the deformation field.
