Compressive behavior of 64% porosity NiTi alloy: An experimental study

Compression fatigue behavior of laser processed porous NiTi alloy

“…However, to the best of our knowledge very little work has been done on fatigue behavior of bulk porous metals, in particular on compression fatigue of NiTi alloys. Some earlier works (Barrabé s et al, 2008;Arciniegas et al, 2007;Guo et al, 2009;Zhang et al, 2008) reporting compression cyclic testing of porous NiTi alloys provide some preliminary understanding of compression fatigue behavior of porous NiTi alloys but in some studies the tests were carried out up to a maximum of 200 cycles only (Guo et al, 2009;Zhang et al, 2008). In this work, we have fabricated dense and porous (up to 20% porosity) NiTi alloy samples using Laser Engineered Net Shaping (LENS TM )-a laser based additive manufacturing technology.…”

Grain size and temperature influence on the toughness of a CuAlBe shape memory alloy

“…The samples studied were obtained from the pouring gates indicated by black rectangles in Fig. 1, since the central poring gate and the base of the poring gates (red rectangles) are more susceptible to the presence of pores, which cause a decrease in the mechanical properties of many shape memory alloys [19,20]. Afterwards, the alloys were machined and again water quenched under ambient atmosphere to recover the shape memory effect.…”

The influence of temperature on the PLC effect in Al-Mg alloy

“…As they are widely used in industry, metal materials have been studied extensively [1][2][3]. During plastic deformation in many alloys, the Portevin-Le Chatelier (PLC) effect [4][5][6][7], which is characteristic of repetitive yielding (serrated yielding) in stress-strain curve and deformation localization (PLC band) on the sample surface, has been observed.…”