Improvement of Cavitation Resistance of Stainless Steels by Solution Nitriding

Operation Barbarossa and the Holocaust by Bullets—Bottom-Up Forces

“…157 Of course, the German shooters had so much power over life and death decisions that nobody in the occupied territories could or would dare inform them that following the rules of occupation (like never leaving a barren ghetto) was in itself a death sentence that forced Jews to become "partisans" and "criminals." 158 Crucial in making all this possible was the process of rationalization that saw the mass shootings become an increasingly bureaucratic process. As Bauman states, Once the objective had been set, everything went on exactly as Weber, with his usual clarity, spelled out: 'The "political master" finds himself in the position of the "dilettante" who stands opposite the "expert", facing the trained official who stands within the management of administration.'…”

Influence of Cold Work on Pitting Corrosion and Cavitation Erosion of High Interstitial FeCrMnCN Austenites

“…The implosion of bubbles, which form in the liquid due to reduction of pressure below vapor pressure, leads to the appearance of shock waves and microjets resulting in damage of materials that are exposed to cavitation . Given that CE resistance is linked with a material's ability to absorb impact energy, the beneficial effect of interstitial strengthening by nitrogen‐alloying has been reported for each CrNi and CrMn austenitic stainless steels and has been correlated with mechanisms like mechanically induced twinning, formation of stacking faults, or even phase transformations . Knowing about the superior mechanical properties of CrMnCN‐alloys, it has also been shown, that they exhibit even higher resistance to surface spalling expressed by CE .…”