INVESTIGADORES
TOLLEY Alfredo Juan
artículos
Título:
Accelerated age hardening by plastic deformation in Al-Cu with minor additions of Si and Ge
Autor/es:
M. V. CASTRO RIGLOS; M. TAQUIRE DE LA CRUZ; A. TOLLEY
Revista:
SCRIPTA MATERIALIA
Editorial:
PERGAMON-ELSEVIER SCIENCE LTD
Referencias:
Año: 2011 vol. 64 p. 169 - 169
ISSN:
1359-6462
Resumen:
An extremely fast hardening response with no reduction in peak hardness was obtained in Al–Cu with minor additions of Si andGe by 8% plastic deformation before artificial aging. The mechanism for the accelerated hardening was determined by detailedcharacterization with transmission electron microscopy. Plastic deformation was found to enhance the nucleation rate of Si–Geprecipitates, resulting in a higher volume density. Such precipitates catalyzed the formation of h0 precipitates that are responsiblefor hardening.