dislocation n. 1.【醫(yī)學(xué)】脫位,脫臼;離位,轉(zhuǎn)位,位移。 2.【地質(zhì)學(xué);地理學(xué)】斷層,斷錯(cuò);【物理學(xué)】位錯(cuò)。 3.混亂,打亂。 a disastrous economic dislocation 災(zāi)難性的經(jīng)濟(jì)混亂。
The refinement mechanism of grain at room temperature can be described as dislocation tangle and dislocation node form in the initial grain with severe plastic deformation , then the dislocation node form subgrains or grains . subgrains become grains by snipping of the subgrain boundaries under the action of shearing stress 室溫ecap細(xì)化晶粒的機(jī)理可描述為:隨著強(qiáng)烈塑性變形的進(jìn)行,原始晶粒中產(chǎn)生了很多位錯(cuò)纏結(jié)和位錯(cuò)胞,進(jìn)而位錯(cuò)胞崩塌變?yōu)閬喚Щ蚓Я?,亞晶粒在后續(xù)ecap剪應(yīng)力作用下,通過(guò)亞晶界被剪斷而變?yōu)榫Я!?