Influence of grain size and composition, topology and excess free volume on the deformation behavior of Cu–Zr nanoglasses

• Daniel Şopu and
• Karsten Albe

Beilstein J. Nanotechnol. 2015, 6, 537–545, doi:10.3762/bjnano.6.56

• interfaces don’t show topological disorder. Our results provide clear evidence that the mechanical properties of metallic NGs can be systematically tuned by controlling the size and the chemical composition of the glassy nanograins. Keywords: enhanced plasticity; metallic glasses; nanoglasses; shear bands

• deformation behavior of nanoglasses has been shown both in computer simulation [11][13][14] and experiment [9][15], where also an enhanced plasticity under compression was observed indicating that not critical shear bands occur. Recent experiments on sputtered nanograined Au-based glasses also showed high

Mechanical properties of sol–gel derived SiO₂ nanotubes

• Boris Polyakov,
• Mikk Antsov,
• Sergei Vlassov,
• Leonid M Dorogin,
• Mikk Vahtrus,
• Roberts Zabels,
• Sven Lange and
• Rünno Lõhmus

Beilstein J. Nanotechnol. 2014, 5, 1808–1814, doi:10.3762/bjnano.5.191

• -pronounced elastic-to-plastic transition [24][31]. Since the bending profile of the test object is registered visually by SEM, the smaller the deformation, the higher the error. In SEM, SiO2 NTs demonstrated limited elasticity and enhanced plasticity, caused by the e-beam promoted generation of defects and

Nanoglasses: a new kind of noncrystalline materials

• Herbert Gleiter

Beilstein J. Nanotechnol. 2013, 4, 517–533, doi:10.3762/bjnano.4.61

• [42][43] of the different plastic deformation modes of the ribbon and of the nanoglass as resulting from numerous intersecting multiple shear bands that nucleate at the glass/glass interfaces of the nanoglass seems to agree with the following observations on the enhanced plasticity of glasses. Lee et

• al. [44] obtained enhanced plasticity in ZrCuNiAl glasses with a heterogeneous microstructure consisting of hard regions surrounded by soft ones. Other approaches, such as cold rolling [44], elastostatic compression [45] or nanometer-sized structural heterogeneities [46][47] have also been shown to

• result in enhanced plasticity. The work hardening of nanoglasses noted in the experiments mentioned above [43] seems also to be related to the numerous intersecting shear bands. This interpretation agrees with the observations of Cao et al. [48]. In fact, enhanced plasticity, work hardening and high