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Journal Article


2017


N. Chibane, H. Ait-Amokhtar, C. Fressengeas

On the strain rate dependence of the critical strain for plastic instabilities in Al-Mg alloys

Scripta Materialia vol: 130, pp: 252–255, 15 March 2017, 2017 .

Keyword :Aluminum alloys; Dynamic strain aging; Portevin-Le Chatelier effect; Strain rate sensitivity; Critical strain

URL :http://www.sciencedirect.com/science/article/pii/S1359646216305917


2015


H. Ait-Amokhtar, C. Fressengeas, K. Bouabdallah

On the effects of the Mg content on the critical strain for the jerky flow of Al-Mg alloys

Materials Science and Engineering A vol: 631, pp: 209–213, 17 April 2015, 2015 .

Keyword :Al–Mg alloys; Jerky flow; Dynamic strain aging; Portevin–Le Chatelier effect; Critical strain

URL :http://www.sciencedirect.com/science/article/pii/S0921509315001720

Document


2012


L. Ziani, S. Boudrahem, H. Ait-Amokhtar, M. Mehenni, B. Kedjar

Unstable plastic flow in the Al–2%Mg alloy, effect of annealing process

Materials Science and Engineering A pp: 239–243, num: 536, 2012 .

Keyword : Portevin-Le Chatelier effect; Transmission electron microscopy; Dynamic strain aging; Critical plastic strain

URL :http://www.sciencedirect.com/science/article/pii/S092150931200007X


2010


H. Ait-Amokhtar, C. Fressengeas

Crossover from continuous to discontinuous propagation in the Portevin–Le Chatelier effect

Acta Materialia vol: 58, pp: 1342-1349, num: 4, 2010 .

Keyword :Portevin–Le Chatelier effect; Dynamic strain aging; Unsteadiness; Digital image correlation; Infrared thermography

URL :http://www.sciencedirect.com/science/article/pii/S1359645409007411


2008


H. Ait-Amokhtar, C. Fressengeas, S. Boudrahem

The dynamics of Portevin–Le Chatelier bands in an Al–Mg alloy from infrared thermography

Materials Science and Engineering A pp: 540-546, num: 488, 2008 .

Keyword : Portevin–Le Chatelier effect; Infrared thermography; Temperature field; Dynamic strain aging; Strain localization; Bandwidth

URL :http://www.sciencedirect.com/science/article/pii/S0921509307018631


2006


H. Ait-Amokhtar, P. Vacher, S. Boudrahem

Kinematics fields and spatial activity of Portevin-Le Chatelier bands using the digital image correlation method

Acta Materialia vol: 54, pp: 4365-4371, num: 16, 2006 .

Keyword :Portevin–Le Chatelier effect; Image correlation; Strain field; Local strain

URL :http://www.sciencedirect.com/science/article/pii/S1359645406003697


H. Ait-Amokhtar, S. Boudrahem, C. Fressengeas

Spatiotemporal aspects of jerky flow in Al–Mg alloys, in relation with the Mg content

Scripta Materialia vol: 54, pp: 2113-2118, num: 12, 2006 .

Keyword :Portevin–Le Chatelier effect; Local measurements; Mg content; Critical strain

URL :http://www.sciencedirect.com/science/article/pii/S1359646206002016


2002


K. Chihab, H. Ait-Amokhtar, K. Bouabdallah

Serrated yielding of Portevin-Le Chatelier effect in commercial Al-Mg alloys

Annales de Chimie Science des Matériaux vol: 27, pp: 69-75, 2002 .

URL :http://www.sciencedirect.com/science/article/pii/S0151910702850085



Conference


2016


L. Ziani and H. Ait-Amokhtar

Unstable Plastic Flow in the Al-2%Mg Alloy

vol: 11, pp: 7, num: DOI: 10.184, 3-4 september 2016, 2016 Kuala Lumpur, Malaysia.

Keyword :Al-Mg alloys, Dislocation densities, Dynamic strain aging, Portevin-Le chatelier effect.

URL :http://www.pakinsight.com/pdf-files/pro/eng/20/ISCASE11-2016-7.pdf

Document


2013


N. Chibane, H. Ait-Amokhtar

On the Portevin-Le Chatelier instabilities in the industrial Al-2.5%Mg alloy

ed: AFM, Maison de la Mécanique, 2013-12-20, 2013 39/41 rue Louis Blanc, 92400 Courbevoie, France(FR).

Keyword :Portevin-Le Chatelier effect, Localized st rain, Dynamic Strain Aging, Ductility

URL :http://hdl.handle.net/2042/52385