Microstructural evolution during tension-compression in-plane deformation of a pure aluminum sheet

Mechanical, microstructural and in-situ neutron diffraction investigations of equi-biaxial Bauschinger effects in an interstitial-free DC06 steel

“…Different microstructural models have been developed to explain the Bauschinger effect. Most importantly (i) Masing's model, which fundamentally addresses the role of residual stresses and "hard" and "soft" regions in polycrystalline materials (Masing, 1926); (ii) extensions of Masing's approach that consider inter-and intragranular residual stresses (Allain-Bonasso et al, 2012;Feaugas, 1999;Hu et al, 2017;Muhammad et al, 2017); (iii) models focusing on the interaction of dislocations created during initial deformation with precipitates, particles or other obstacles, such as grain boundaries or forest dislocations (Brown, 1977); (iv) mechanically inspired models describing the development of elastic back stresses (Abel and Muir, 1972;Hu et al, 2017;Kostryzhev, 2009;Kostryzhev et al, 2010;Liao et al, 2017;Plumtree and Abdel-Raouf, 2001;Richards et al, 2011;Sleeswyk and Kemerink, 1985;Stout and Rollett, 1990;Xue et al, 2016;Zhu et al, 2013); as well as (v) explicit microstructural models of the formation and decomposition of substructures due to annihilation (Bate and Wilson, 1986;Copreaux et al, 1993;Härtel et al, 2017;Hasegawa et al, 1975;Johnson et al, 1990;Lewandowska, 2003;Mughrabi, 1983;Peeters et al, 2002;Rauch, 1997;Rauch and Schmitt, 1989;Schmitt and Baudelet, 1985; van Riel and van den Boogaard, 2007;Vincze et al, 2005). This wealth of scientific literature clearly indicates the complex interaction of multiple microstructural and micromechanical phenomena that contribute to Bauschinger effects.…”

“…Several approaches have been proposed to overcome this issue. In uniaxial experiments, various groups have reported experimental approaches where buckling is at least partially suppressed by the use of support plates or similar add-on structures (Boger et al, 2005;Härtel et al, 2017;Knoerr et al, 2013;Kuwabara et al, 2001;Piao et al, 2012;Tan et al, 1994). Much less work has been published on biaxial load cases.…”