BCC 平面都不像 FCC 平面那样紧密堆积，这通常意味着 BCC 金属不易滑动（强度更高，但延展性较差），...
bcc密排面是｛110｝，fcc密排面是｛111｝ FCC Slip occurs on {111} planes (close-packed) in <110>directions (close-packed）For BCC & HCP there are other slip systems
that differences in the orientation of the slip planes, relative to the low-cohesive strength {1 0 0} fracture planes, cause dislocations to promote crack tip blunting and plastic shielding in the case of the fcc material while such effects are only marginal in the case of the bcc material....
(b1⋅b2)where n1 and n2 are the normalized intersection lines common to the slip planes and the boundary plane, and b1 and b2 are the normalized slip directions in the pile-up and emission grains. The first expression in parentheses on the right hand side of Eqn. (1) correlates to ...
The strengthening effects caused by TB originates from the abrupt change of the slip planes which will hinder the motion of dislocations geometrically as a high-angle GB, and the coherency of a perfect TB makes it less possible to be a source of dislocations. Though a TB itself does not re...
Generalized Ginzburg-Landau functionals describing transitions between bcc, fcc, and hcp structures are studied using four weakly nonuniform transformation parameters: three tensile strains along the principal crystallographic axes and a "phonon" parameter describing relative slip of close-packed planes. ...
Only one dislocation segment is created to avoid the interaction between a dislocation dipole on parallel slip planes.39 Once the equilibrium atomic configuration of the FR source is achieved, quenched dynamic CAC simulations are carried out with an increment of applied shear stress Δσxz = 4 ...
was found an analytical dependence of the angle between the directions of close-packed atomic rows on the elastic properties of the initial bcc lattice. ... Kashchenko,MP,Chashchina,... - 《Phys Metals Metallogr Engl Tr》 被引量: 46发表: 2008年 The structure, slip systems, and microhardne...
11) fcc move witheach other to alter their stacking order and change into the planes(110) bcc respectively.Thenecessary adjustment of the spacings is ... CHEN Qizhi WU Xingfang KE Jun T Ko University of Science and Technology Beijing,Beijing - 《Acta Metallurgica Sinica(English Letters)》 被...
Passage of more partials on neighboring {1 1 1} planes results in formation of larger twins. In many of these models, the stress required to nucleate a twin has been determined from the stress required to operate a twin source such as a pileup, Lomer–Cottrell lock, etc. [9], [12]....