“…There are always some differences in Luders band propagation characteristics associated with geometric factors affecting triaxiality and therefore with plastic constraint. 2, were not expected, Krishnadev and Ghosh, 1979;Cutler and Krishnadev, 1982;Wilshynsky, 1982;Moon, 1983;Bratina and co-workers, 1986;Tseng, Goel and Tangri, 1986). 1 On the basis of these earlier studies, the large strains to fracture of about 0.30 and Luders strains of 0.09 which were observed at 77 K in some experimental and commercial HSLA steels, e.g.…”