Qhov sib txawv tseem ceeb ntawm kev ua kom zoo thiab kev ua kom zoo yog qhov ductility ntawm cov khoom siv yog qhov muaj peev xwm ua rau muaj kev ntxhov siab tsis muaj kev puas tsuaj lossis kev puas tsuaj whereas lub malleability ntawm cov khoom yog lub peev xwm mus rau hauv compressive kev nyuaj siab yam tsis muaj puas los yog puas.
Ductility thiab malleability yog ob yam khoom uas tseem ceeb heev hauv kev xaiv cov khoom siv hauv tsev thiab tsim khoom. Cov khoom no piav qhia txog plasticity ntawm cov khoom siv. Hauv cov hlau, ductility thiab malleability yog siab heev vim lawv muaj peev xwm los txhawb nqa ntau cov yas deformations hauv cov qauv siv lead ua. Piv txwv li, platinum yog cov khoom siv zoo tshaj plaws, thiab kub yog cov khoom zoo tshaj plaws.
Ductility yog dab tsi?
Ductility yog lub peev xwm ntawm cov khoom siv kom muaj kev ntxhov siab tensile yam tsis muaj kev puas tsuaj. Peb tuaj yeem ntsuas cov khoom no ntawm cov khoom siv, thiab nws piav qhia txog qhov uas cov khoom siv tuaj yeem ua rau cov yas deformation yam tsis muaj kev puas tsuaj. Nws yog feem ntau piav qhia los ntawm lub peev xwm ntawm cov khoom kom ncab mus rau hauv cov hlau thaum rub ntawm qhov kawg.
Daim duab 01: Tensile Test for Cast Iron
Qhov no yog cov cuab yeej cuab yeej cuab tam, thiab peb tuaj yeem suav nws los ntawm kev puas tsuaj, uas yog qhov nyuaj ntawm cov khoom tawg thaum peb siv zog tensile ntau ntxiv raws li ib qho axis. Kev txo qis ntawm thaj chaw los ntawm qhov pib taw tes mus rau qhov tawg thaum lub sij hawm xeem kuj yog ib qho kev ntsuas rau cov cuab yeej no. Ductility yog ib yam khoom uas peb tab tom nrhiav tshwj xeeb hauv cov hlau. Cov hlau muaj ductility siab heev. Yog li ntawd, peb tuaj yeem yooj yim tswj cov hlau piv rau lwm yam khoom siv.
Malleability yog dab tsi?
Malleability yog lub peev xwm ntawm cov khoom siv kom muaj kev ntxhov siab tsis muaj kev puas tsuaj. Cov hlau yog cov malleable heev piv rau cov ntaub ntawv tsis yog hlau. Yog li ntawd, peb tuaj yeem tsim cov hlau siv txoj hauv kev xws li forging, dov, extrusion thiab indenting. Txij li thaum kub yog cov malleable heev peb tuaj yeem tsim nws rau hauv cov ntawv nyias nyias, qee zaum tsuas yog ob peb atoms tuab.
Daim duab 02: Peb tuaj yeem tau txais Cov Ntawv Kub Kub vim nws Malleability
Peb tuaj yeem ntsuas qhov kev ua tau zoo ntawm cov khoom los ntawm kev txiav txim siab ntau npaum li cas (kev ntxhov siab compressive) nws tuaj yeem tiv taus yam tsis tawg. Tab sis, cov cuab yeej no txawv ntawm ib yam khoom mus rau lwm qhov nyob ntawm seb cov qauv siv lead ua ntawm cov khoom. Thaum lub sij hawm compression, atoms dov ib leeg rau hauv txoj haujlwm tshiab. Txawm li cas los xij, lawv zoo li tsis cuam tshuam cov hlau nplaum ntawm lawv. Feem ntau lub sijhawm hloov txoj haujlwm no mus tas li.
Qhov txawv ntawm Ductility thiab Malleability yog dab tsi?
Kev ua haujlwm ntawm cov khoom siv yog qhov muaj peev xwm ua rau muaj kev ntxhov siab tensile yam tsis muaj pob txha lossis puas. Tsuas yog lub peev xwm los kos cov khoom rau hauv ib lub xaim los ntawm kev rub ntawm qhov kawg. Whereas, malleability ntawm ib yam khoom yog lub peev xwm mus rau hauv compressive kev nyuaj siab yam tsis muaj puas los yog puas. Yooj yim, nws yog lub peev xwm los muab hammered los yog thawb rau hauv cov ntawv nyias yam tsis muaj kev tawg. Yog li ntawd, qhov no yog qhov sib txawv tseem ceeb ntawm ductility thiab malleability.
Txawm li cas los xij, feem ntau, ductility thiab malleability yog sib koom ua ke. Piv txwv li, nyiaj thiab kub yog heev malleable thiab ductile. Tab sis qee zaus ductility yog siab thaum malleability tsawg los yog vice versa. Piv txwv li, Lead thiab cam khwb cia hlau yog cov malleable heev txawm tias lawv muaj qis dua ductility.
Cov hauv qab no infographic tabulates qhov sib txawv ntawm ductility thiab malleability nyob rau hauv kom meej ntxiv.
Summary – Ductility vs Malleability
Ductility thiab malleability yog ob yam ntawm cov txheej txheem yas deformation ntawm cov khoom siv. Txij li cov hlau muaj cov qauv siv lead ua thiab cov hluav taws xob dawb tso cai rau ntau qhov sib txawv, lawv yog ob qho tib si malleable thiab ductile. Qhov sib txawv tseem ceeb ntawm ductility thiab malleability yog qhov ductility ntawm cov khoom siv yog qhov muaj peev xwm ua rau muaj kev ntxhov siab tensile yam tsis muaj kev puas tsuaj los yog kev puas tsuaj whereas lub malleability ntawm cov khoom yog lub peev xwm mus rau hauv compressive kev nyuaj siab yam tsis muaj puas los yog puas.
