Effective Stacking Fault Energy in Face-Centered Cubic Metals
نویسندگان
چکیده
منابع مشابه
Stacking fault energy of face-centered cubic metals: thermodynamic and ab initio approaches.
The formation energy of the interface between face-centered cubic (fcc) and hexagonal close packed (hcp) structures is a key parameter in determining the stacking fault energy (SFE) of fcc metals and alloys using thermodynamic calculations. It is often assumed that the contribution of the planar fault energy to the SFE has the same order of magnitude as the bulk part, and thus the lack of preci...
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The activation of plastic deformation mechanisms determines the mechanical behavior of crystalline materials. However, the complexity of plastic deformation and the lack of a unified theory of plasticity have seriously limited the exploration of the full capacity of metals. Current efforts to design high-strength structural materials in terms of stacking fault energy have not significantly redu...
متن کاملSlanted stacking faults and persistent face centered cubic crystal growth in sedimentary colloidal hard sphere crystals†
Hard sphere crystal growth is a delicate interplay between kinetics and thermodynamics, where the former is commonly thought to favour a random hexagonal close packed structure and the latter leads to a face centered cubic crystal. In this article, we discuss the influence of slanted stacking faults on the growth of sedimentary colloidal crystals from dispersions with high initial volume fracti...
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We present a general method for calculating the stacking-fault energy in simple metals, and then we apply this to the ( 1 1 2 ) faults in body-centred cubic (BCC) metals. Our method contains no approximations for a given wavenumber characteristic (or equivalently the pair potential). Our results show that metastable faults do indeed exist in the simple BCC metals (Li, Na. K, Rb, Cs, Ca. Sr, Ba)...
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ژورنال
عنوان ژورنال: Acta Metallurgica Sinica (English Letters)
سال: 2018
ISSN: 1006-7191,2194-1289
DOI: 10.1007/s40195-018-0718-4