E-twinning is the dominant mechanism of plastic deformation calcite at low temperature (<300 °C), and in most limestones, e-twins are, crystal scale, microstructures [...]

This study discusses the deformation mechanisms active during high temperature compression tests of Ni-base superalloy ATI 718Plus®. Deformation twins were observed in deformed grains across a range temperatures and strain rates by use transmission electron microscopes (TEM). Even at as low 0.01 s?1 up to 1025?C microstructure contained which twinning. It was concluded that stacking fault energ...

The hydrogen desorption behaviors of the SUS304 and SUS316L austenitic stainless steels during deformation at ambient temperature were investigated using a tensile test machine in vacuum chamber equipped with mass spectrometer. Obvious was detected only steel, which exhibited distinct martensitic transformation. Because rate decreased when stopped, significant factor causing transformation-indu...

Large meteorite impacts cause great changes to geologic features on Earth, ranging from cratering and ejecta blankets to phase transformations in minerals. In this report we describe the effect of a shock wave on the crystallographic orientation of quartz crystals in quartzite from the Vredefort impact site in South Africa. Preferred orientation of bulk quartzite samples was measured by time-of...