Slip transmission of high angle grain boundaries in body-centered cubic metals: Micropillar compression of pure Ta single and bi-crystals

Grain boundary energies in body-centered cubic metals

Atomistic simulations using the embedded atom method were employed to compute the energies of 408 distinct grain boundaries in bcc Fe and Mo. This set includes grain boundaries that have tilt, twist, and mixed character and coincidence site lattices ranging from R3 to R323. The results show that grain boundary energies in Fe and Mo are influenced more by the grain boundary plane orientation tha...

Computer Modeling of Grain Boundaries in Cubic Metals

The current knowledge of grain boundary structure in cubic crystals modeled by computer simulation techniques is reviewed. The advantages and limitations of the methods and interatomic potentials employed are detailed and emphasized. Two different approaches are described: firstly, examples are given of individual special boundary structures that have matched well with particular experimental o...

Energy of slip transmission and nucleation at grain boundaries

Grain boundaries (GBs) provide a strengthening mechanism in engineering materials by impeding dislocation motion. In a polycrystalline material, there is a wide distribution of GB types with characteristic slip transmission and nucleation behaviors. Slip–GB reactions are not easy to establish analytically or from experiments; furthermore, there is a strong need to quantify the energy barriers o...

the role of russia in transmission of energy from central asia and caucuses to european union

پس ازفروپاشی شوروی،رشد منابع نفت و گاز، آسیای میانه و قفقاز را در یک بازی ژئوپلتیکی انرژی قرار داده است. با در نظر گرفتن این منابع هیدروکربنی، این منطقه به یک میدانجنگ و رقابت تجاری برای بازی های ژئوپلتیکی قدرت های بزرگ جهانی تبدیل شده است. روسیه منطقه را به عنوان حیات خلوت خود تلقی نموده و علاقمند به حفظ حضورش می باشد تا همانند گذشته گاز طبیعی را به وسیله خط لوله مرکزی دریافت و به عنوان یک واس...

Cryogenic nanoindentation size effect in [0 0 1]-oriented face-centered cubic and body- centered cubic single crystals