... the interfaces with base metal. Columnar grains in the middle of the welded layer 02 06 2009 18 02 2010 16 06 2010 16 06 2010 bars crystal microstructure fatigue mechanical testing nickel alloys optical microscopy scanning electron microscopy superalloys welding...

...Yuanli Bai; Xiaoqing Teng; Tomasz Wierzbicki Theoretical and experimental studies have shown that stress triaxiality is the key parameter controlling the magnitude of the fracture strain. Smooth and notched round bar specimens are mostly often used to quantify the effect of stress triaxiality...

...Burghardt Klöden; Carl-Georg Oertel; Werner Skrotzki; Erik Rybacki The microstructure development was investigated in torsion deformed NiAl. High strain torsion of solid bars was done with a Paterson rock deformation machine at temperatures between 700 K and 1300 K under a confining pressure of 400...

..., the characterizations of creep crack growth rates under the multiaxial stress field are important to improve the methods for creep life extension. In this paper, creep crack growth tests were conducted using round bar specimens with sharp circular notches for tungsten-added 12%Cr ferritic heat-resistant steel (W12%Cr...

...Jason McCormick; Reginald DesRoches; Davide Fugazza; Ferdinando Auricchio Superelastic NiTi shape memory alloy (SMA) wires and bars are studied to determine their damping and recentering capability for applications in the structural control of buildings subjected to earthquake loadings...

... deformation processes in activated NiTi . A continuous variation of the rhombohedral distortion angle α of the R-phase structure with temperature and stress is newly introduced as a legitimate deformation mechanism. Simulation results for NiTi bars and wires exposed to three types of thermomechanical tests...