We have studied the initial stage of plastic deformation behavior of metallic nanowire of pure nickel, by using molecular dynamics methods. In these simulations, we applied uniform strain along c-axis at strain rate of 0.5%/100ps, 0.5%/10ps and 0.1%/2ps. We have observed the formation of stacking faults by movement of a partial dislocation, and the development of stacking faults to deformation ...

investigating the parameters influencing the behavior of buried pipelines under dynamic loading is of great importance. in this study the soil structure interaction of the pipelines with the surrounding soil was addressed using shaking table tests. wave propagation along the soil layers was also included in the study. the semi infinite nature of the field was simulated using a laminar shear box...

more recently, titanium and aluminum alloys are gaining more interests to be implemented in hydro-forming applications. it is necessary to predict forming limits for these sheet alloys. forming limits play an important role in metal forming processes. forming limit diagrams, present the limit strains for various linear strain paths. in other hand, forming limit curve (flc), illustrates localize...

The application of high-strength steel sheets in automobiles has been increased to achieve low bodyweight and simultaneously enhance crashworthiness. High-strength are susceptible hydrogen embrittlement it is essential evaluate their delayed fracture resistance for appropriate use. Delayed typically evaluated using the relationship between amount diffusible strength obtained from a constant loa...

The slow–strain-rate tensile test was used to study the chloride stress corrosion cracking (SSC) behavior of 316L stainless steel under simulated condition a CO2 gas field in Tarim Basin, and effects CO2, Cl? concentration, temperature on sensitivity SCC were discussed. results show that increase content has no apparent influence steel. With rise temperature, SCC’s increases, change index Iscc ...

Hydrogen-assisted crack growth of pre-strained twinning-induced plasticity (TWIP) steel was investigated using artificial defects (micro-drilled holes), which acted as initiation sites. Hydrogen introduced into the specimens by electrochemical hydrogen charging during slow strain rate tensile test. The quasi-cleavage propagation observed due to repeated near tip and subsequent coalescence. Crac...

Abstract 7N01-T4 aluminum alloy is widely applied to high speed train body material attributed its excellent comprehensive mechanical properties; however, sensitivity hydrogen stress corrosion would seriously restrict further application. In this study, the hydrogen-induced of base metal and joint was investigated under slow strain rate test ascertain characteristics mechanism cracking alloy. B...