Measuring the critical resolved shear stresses in Mg alloys by instrumented nanoindentation

Sánchez-Martín, R.; Pérez Prado, María Teresa; Segurado Escudero, Javier; Bohlen, J.; Gutiérrez Urrutia, Iván; Llorca Martinez, Francisco Javier y Molina Aldareguía, Jon M. (2014). Measuring the critical resolved shear stresses in Mg alloys by instrumented nanoindentation. "Acta Materialia", v. 71 ; pp. 283-292. ISSN 1359-6454. https://doi.org/10.1016/j.actamat.2014.03.014.

Descripción

Título: Measuring the critical resolved shear stresses in Mg alloys by instrumented nanoindentation
Autor/es:
  • Sánchez-Martín, R.
  • Pérez Prado, María Teresa
  • Segurado Escudero, Javier
  • Bohlen, J.
  • Gutiérrez Urrutia, Iván
  • Llorca Martinez, Francisco Javier
  • Molina Aldareguía, Jon M.
Tipo de Documento: Artículo
Título de Revista/Publicación: Acta Materialia
Fecha: Junio 2014
Volumen: 71
Materias:
Palabras Clave Informales: Nanoindentation; Crystal plasticity modeling; Critical resolved shear stresses; Rare earths; Magnesium alloys
Escuela: E.T.S.I. Caminos, Canales y Puertos (UPM)
Departamento: Ciencia de los Materiales
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

Texto completo

[img]
Vista Previa
PDF (Document Portable Format) - Se necesita un visor de ficheros PDF, como GSview, Xpdf o Adobe Acrobat Reader
Descargar (2MB) | Vista Previa

Resumen

One of the main limiting factors in the development of new magnesium (Mg) alloys with enhanced mechanical behavior is the need to use vast experimental campaigns for microstructure and property screening. For example, the influence of new alloying additions on the critical resolved shear stresses (CRSSs) is currently evaluated by a combination of macroscopic single-crystal experiments and crystal plasticity finite-element simulations (CPFEM). This time-consuming process could be considerably simplified by the introduction of high-throughput techniques for efficient property testing. The aim of this paper is to propose a new and fast, methodology for the estimation of the CRSSs of hexagonal close-packed metals which, moreover, requires small amounts of material. The proposed method, which combines instrumented nanoindentation and CPFEM modeling, determines CRSS values by comparison of the variation of hardness (H) for different grain orientations with the outcome of CPFEM. This novel approach has been validated in a rolled and annealed pure Mg sheet, whose H variation with grain orientation has been successfully predicted using a set of CRSSs taken from recent crystal plasticity simulations of single-crystal experiments. Moreover, the proposed methodology has been utilized to infer the effect of the alloying elements of an MN11 (Mg–1% Mn–1% Nd) alloy. The results support the hypothesis that selected rare earth intermetallic precipitates help to bring the CRSS values of basal and non-basal slip systems closer together, thus contributing to the reduced plastic anisotropy observed in these alloys

Más información

ID de Registro: 35586
Identificador DC: http://oa.upm.es/35586/
Identificador OAI: oai:oa.upm.es:35586
Identificador DOI: 10.1016/j.actamat.2014.03.014
URL Oficial: http://www.sciencedirect.com/science/article/pii/S135964541400161X
Depositado por: Memoria Investigacion
Depositado el: 08 Jul 2015 17:10
Ultima Modificación: 08 Jul 2015 17:10
  • Open Access
  • Open Access
  • Sherpa-Romeo
    Compruebe si la revista anglosajona en la que ha publicado un artículo permite también su publicación en abierto.
  • Dulcinea
    Compruebe si la revista española en la que ha publicado un artículo permite también su publicación en abierto.
  • Recolecta
  • e-ciencia
  • Observatorio I+D+i UPM
  • OpenCourseWare UPM