Scov tuav teel yog ib hom hlau uas muaj cov xov zoo li xov, uas feem ntau yog siv rau hauv kev tsim kho, Choj, txoj kev thiab lwm yam haujlwm ua cov khoom siv txhawb nqa rau cov pob zeb ua vaj tse. Lub ntsiab lus tseem ceeb ntawm rebar yog tias nws muaj qhov zoo ductility thiab plasticity, thiab tuaj yeem khoov tau yooj yim rau ntau yam duab, thaum muaj lub zog tensile siab thiab hardness.
Cov khoom ntawm pebcov hlau tuavua rau nws zoo tagnrho rau cov haujlwm tsim kho ntawm txhua qhov ntau thiab tsawg. Nwslub zog tensile siab thiab adhesion zoo heevrau cov pob zeb ua rau nws muaj peev xwm tiv taus cov khoom hnyav thiab cov xwm txheej ib puag ncig hnyav. Tsis tas li ntawd, peb cov hlau tsis kam xeb, ua kom ntseeg tau tias muaj kev ruaj khov mus sij hawm ntev thiab txo cov nqi kho rau lawv cov qauv txhawb nqa.
Hauv ntiaj teb kev tsim kho, qhov tseem ceeb ntawmsiv cov hlau zootsis tuaj yeem hais ntau dhau. Nws muab cov pob zeb ua vaj tse nrog cov khoom siv txhawb nqa kom tiv thaiv kev tawg thiab kev puas tsuaj ntawm cov qauv, thaum kawg txhim kho kev nyab xeeb thiab lub neej ntev ntawm cov tsev thiab cov khoom siv hauv paus. Los ntawm kev siv peb cov rebar rau cov haujlwm tsim kho, cov neeg tsim kho thiab cov engineers tuaj yeem ua kom lawv cov qauv ua tau raws li lossis tshaj cov qauv kev lag luam hauv kev muaj zog thiab kev ruaj khov.
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