Thaum cov pob txha tawg tshwm sim hauv cov khoom tom qab cov yas deformation, void nucleation, void loj hlob, thiab void coalescence tshwm sim microscopically hauv cov khoom (Dodd thiab Bai, 1987); cov khoom deteriorates thaum lub sij hawm yas deformation vim voids.
Nyob hauv qhov teeb meem dab tsi tshwm sim?
Nyob hauv qhov teeb meem dab tsi tshwm sim? Kev piav qhia: Cov pob txha tawg tshwm sim hauv trans granular yam thaum lub pob tawg tawg hauv kev puas tsuaj. Kev piav qhia: Cov dav hlau nrog rau qhov kev puas tsuaj tshwm sim hauv cov hlau yog hu ua lub dav hlau cleavage. Nplai thiab ntxaib dav hlau yog nyob rau hauv uas slipping thiab twinning yog nyiam.
Vim li cas cov hlau ua rau cov pob txha tawg?
Cov pob txha tawg hauv cov hlau thiab hlau alloys feem ntau tshwm sim los ntawm pib, kev loj hlob, thiab kev sib koom ua ke ntawm cov khoom siv hluav taws xob tsis zoo thaum lub sij hawm yas deformation [1–6]. … Thaum cov voids nucleate, ntxiv cov yas deformation ua rau qhov loj ntawm cov voids thiab distors cov duab, uas feem ntau hu ua void kev loj hlob [7].
Koj paub li cas ntawm qhov tawg tawg?
Cov pob txha tawg muaj cov yam ntxwv hauv qab no:
- Muaj ntau qhov kev ruaj khov lossis cov yas deformation hauv thaj tsam ntawm cov pob txha tawg. …
- Qhov saum npoo ntawm cov pob txha tawg tsis tas yuav cuam tshuam nrog kev coj ntawm lub ntsiab tensile kev nyuaj siab, raws li nws yog nyob rau hauv ib tug nkig puas.
hom kev ua tsis tiav li cas hauvCov khoom siv ductile thiab brittle?
Corrosionpedia Piav Qhia Qhov Tsis Ua Haujlwm
Yuav luag txhua cov ntaub ntawv engineering tsuas yog ob hom kev ua tsis tiav / tawg hom: zawm thiab tawg tawg. Cov ntaub ntawv pov thawj pom cov yas loj heev buckling lossis deformationpiv rau cov khoom tawg.
