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

Sánchez-Martín, R. and Pérez Prado, María Teresa and Segurado Escudero, Javier and Bohlen, J. and Gutiérrez Urrutia, Iván and Llorca Martinez, Francisco Javier and 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.

Description

Title: Measuring the critical resolved shear stresses in Mg alloys by instrumented nanoindentation
Author/s:
  • Sánchez-Martín, R.
  • Pérez Prado, María Teresa
  • Segurado Escudero, Javier
  • Bohlen, J.
  • Gutiérrez Urrutia, Iván
  • Llorca Martinez, Francisco Javier
  • Molina Aldareguía, Jon M.
Item Type: Article
Título de Revista/Publicación: Acta Materialia
Date: June 2014
ISSN: 1359-6454
Volume: 71
Subjects:
Freetext Keywords: Nanoindentation; Crystal plasticity modeling; Critical resolved shear stresses; Rare earths; Magnesium alloys
Faculty: E.T.S.I. Caminos, Canales y Puertos (UPM)
Department: Ciencia de los Materiales
Creative Commons Licenses: Recognition - No derivative works - Non commercial

Full text

[img]
Preview
PDF - Requires a PDF viewer, such as GSview, Xpdf or Adobe Acrobat Reader
Download (2MB) | Preview

Abstract

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

Funding Projects

TypeCodeAcronymLeaderTitle
FP7280421EXOMETEUROPEAN SPACE AGENCYPhysical processing of molten light alloys under the influence of external fields
Government of SpainMAT2012-31889UnspecifiedUnspecifiedUnspecified
Government of SpainPRI-PIBUS-2011-0990UnspecifiedUnspecifiedUnspecified
Government of SpainPRI-PIBUS-2011-0917UnspecifiedUnspecifiedUnspecified

More information

Item ID: 35586
DC Identifier: http://oa.upm.es/35586/
OAI Identifier: oai:oa.upm.es:35586
DOI: 10.1016/j.actamat.2014.03.014
Official URL: http://www.sciencedirect.com/science/article/pii/S135964541400161X
Deposited by: Memoria Investigacion
Deposited on: 08 Jul 2015 17:10
Last Modified: 16 May 2019 11:36
  • Logo InvestigaM (UPM)
  • Logo GEOUP4
  • Logo Open Access
  • Open Access
  • Logo Sherpa/Romeo
    Check whether the anglo-saxon journal in which you have published an article allows you to also publish it under open access.
  • Logo Dulcinea
    Check whether the spanish journal in which you have published an article allows you to also publish it under open access.
  • Logo de Recolecta
  • Logo del Observatorio I+D+i UPM
  • Logo de OpenCourseWare UPM