Kev nce hauv tus naj npawb ntawm dislocations yog qhov muaj nuj nqis ntawm kev ua haujlwm hardening. Yas deformation tshwm sim raws li qhov tshwm sim ntawmua haujlwmua tiav ntawm cov khoom;zogyog ntxiv rau cov khoom siv. Tsis tas li ntawd, lub zog yuav luag txhua zaus siv nrawm txaus thiab muaj qhov loj txaus kom tsis txhob txav cov dislocations uas twb muaj lawm, tab sis kuj tsim kom muaj ntau yam tshiab dislocations los ntawm jarring lossis ua haujlwm cov khoom txaus txaus. Tshiab dislocations yog generated nyob ze rau aFrank-Read qhov chaw.
Yield zog yog nce nyob rau hauv cov khoom txias-ua hauj lwm. Siv cov lattice strain teb, nws tuaj yeem pom tau tias ib puag ncig uas muaj qhov tsis sib xws yuav cuam tshuam kev txav ntawm ib qho kev cuam tshuam. Vim hais tias dislocation motion yog hindered, yas deformation tsis tuaj yeem tshwm sim ntawm qhov qubkev nyuaj siab. Raws li kev siv cov kev ntxhov siab dhau los ntawm kev tawm dag zog ntawm cov khoom tsis ua haujlwm txias, cov khoom ua haujlwm txias yuav txuas ntxiv deform siv cov txheej txheem nkaus xwb: elastic deformation, cov txheej txheem tsis tu ncua ntawm stretching lossis compressing ntawm hluav taws xob bonds (tsis muaj.dislocation txav) tseem tshwm sim, thiab covModulus ntawm elasticitytsis hloov. Thaum kawg qhov kev ntxhov siab yog qhov zoo txaus los kov yeej qhov kev sib tshuam ntawm kev sib tshuam thiab cov yas deformation rov pib dua.
Txawm li cas los xij,ductilityntawm cov khoom siv ua haujlwm hardened yog txo.Ductilityyog qhov twg cov khoom tuaj yeem ua rau cov yas deformation, uas yog, nws yog qhov deb npaum li cas cov khoom tuaj yeem ua plastically deformed ua ntej tawg. Cov khoom siv ua haujlwm txias yog, qhov tshwm sim, cov khoom siv ib txwm (nkim) uas twb tau txuas ntxiv los ntawm ib feem ntawm nws cov yas deformation tau tso cai. Yog hais tias dislocation motion thiab yas deformation tau hindered txaus los ntawm dislocation tsub zuj zuj, thiab stretching ntawm hluav taws xob daim ntawv cog lus thiab elastic deformation tau mus txog lawv txwv, ib tug thib peb hom ntawm deformation tshwm sim: tawg.
