Stress state is a primary factor controlling the ductile fracture behavior of steels, which typically represented as combination stress triaxiality and Lode angle parameter. The cleavage properties pipeline steels at low temperatures are usually assessed under plane strain conditions, such using mechanics experiments. In this study, X70 steel liquid nitrogen temperature (?196 °C) characterized ...

It is known that the mechanical behavior of many hexagonal close-packed (HCP) materials sensitive to textural variations. In technologically important magnesium (Mg) alloys, anisotropic plastic behaviors and their dependence on different processing-induced textures have been reasonably well studied under relatively simple stress states. However, a detailed assessment rate-dependent microstructu...

The microlensing probability (optical depth τ) toward the Galactic center carries information about the mass distribution of the Galactic bulge/bar, so can be used to constrain the very uncertain shape parameters of the Galactic bar. In this paper we study a family of bar models with tunable triaxiality, boxyness and radial profile to span the range of plausible density models of the Galactic b...

Welding is the main method for oil/gas steel pipeline connection, and a large number of girth welds are weak part pipeline. Under extremely complex loads, undergoes significant plastic deformations eventually leads to fracture. A damage mechanics model promising approach, capable describing material fracture problems according stress states materials. In this study, an uncoupled 2D with functio...