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 microprocesses of deformation and fracture in 18 - 8 stainless steel were observed by in - situ tension in tem . it was found that the dislocations were emitted from the grainboundary and dislocation source inside a grain and slip along their slip system respectively . partial dislocation could also be emitted from the grainboundary , and moved into the grain , and that leaving behind a stacking fault 摘要浙江人學(xué)博1 :學(xué)位論文采用透射電鏡動(dòng)態(tài)拉伸、原位觀察icrlsnigti不銹鋼形變與斷裂過(guò)程,發(fā)現(xiàn)不銹鋼變形時(shí),晶界和晶內(nèi)位錯(cuò)源均可產(chǎn)生位錯(cuò),并沿各自的滑移系運(yùn)動(dòng)。
Keeping displacement constant , the length of dfz decreased . the less the lattice resistance is , the longer the dfz is . during the crack propagation , the pile - up dislocations may move forward in the previous direction or in another direction which caused shape of dfz changed . the dislocations emitted from the crack tip might pile up in the dfz and can be served as dislocation source in the successive loading 在裂紋擴(kuò)展過(guò)程,反塞積位錯(cuò)群發(fā)生變化,可以沿原來(lái)方向繼續(xù)向前運(yùn)動(dòng),也可能改變運(yùn)動(dòng)方向使無(wú)位錯(cuò)區(qū)的形狀發(fā)生變化,后來(lái)發(fā)射出的位錯(cuò)可以在原五位錯(cuò)區(qū)中塞積,并可作為位錯(cuò)源在后續(xù)的加載中發(fā)射位錯(cuò)。