1. Qhov cuam tshuam Toughness ntawm Qib 2 Titanium yog dab tsi?
General Performance:
Raws li cov khoom lag luam ntshiab titanium, Qib 2 muaj cov ductility siab thiab toughness. Nws tsis qhia qhov ntse ntse - mus rau - qhov hloov pauv hloov kub zoo li ntau cov hlau. Hloov chaw, nws khaws ib qho tseem ceeb ntawm nws qhov toughness txawm nyob rau qhov kub thiab txias heev.
Charpy V-Ntch Impact Values (Hom):
Ntawm chav tsev kub (RT), Charpy V-notch (CVN) cuam tshuam lub zog feem ntau nyob rau hauv thaj tsam ntawm 25–45 Joules (18–33 ft-lbf).
Ntawm qhov kub thiab txias (piv txwv li, -196℃/ -}321℃F, kua nitrogen kub), nws tseem tuav lub zog muaj zog, feem ntau siab dua 20 Joules (15 ft-lbf), uas qhia tau hais tias qhov kub thiab txias toughness.
Factors cuam tshuam Toughness:
Kev kho cua sov:
Nyob rau hauv cov xwm txheej annealed (lub xeev tus txheej txheem xa khoom), Qib 2 muaj qhov zoo tshaj plaws ua ke ntawm ductility thiab toughness. Kev ua haujlwm txias tuaj yeem ua rau muaj zog thiab tawv, tab sis yuav txo qhov cuam tshuam toughness thiab ductility.
Microstructure:
Fine, uniform equiaxed microstructure (ib yam ntawm annealed Qib 2) txhawb zog dua.
Thickness:
Thicker seem yuav pom me ntsis toughness vim qhov sib txawv microstructural los yog residual stresses, tab sis qhov txo qis feem ntau tsis hnyav.
Cov txiaj ntsig ntawm kev siv:
Nws qhov siab tawv ntawm qhov kub thiab txias ua rau Qib 2 haum rau cov ntawv thov cryogenic, xws li hauv cov roj liquefied natural gas (LNG) systems, cryogenic cia, thiab aerospace Cheebtsam ua haujlwm ntawm qhov kub thiab txias, qhov kev tiv thaiv tam sim ntawd thiab tawg yog qhov tseem ceeb.
2.Puas Qib 2 titanium tuaj yeem muaj zog los ntawm kev kho cua sov?
Tsis yog, Qib 2 titanium tsis tuaj yeem muaj zog los ntawm kev kho cua sov.
Qib 2 yog cov titanium uas tsis muaj khoom siv (ua lag luam ntshiab) thiab tsis dhau alpha-beta theem hloov pauv lossis nag lossis daus nyuaj uas yog lub hauv paus rau kev kho cua sov ntxiv dag zog hauv cov alloys xws li Ti‑6Al-4V (Qib 5).
Cov laj thawj tseem ceeb:
Tsis muaj theem hardening: Nws muaj yuav luag tag nrho ntawm alpha theem (HCP siv lead ua qauv) ntawm txhua qhov kub txog rau nws qhov melting point. Tsis muaj theem beta los hloov lossis ua kom muaj zog ntxiv.
Cov teebmeem kev kho cua sov:
Annealing: Tsuas yog siv los ua kom cov khoom muag muag, rov qab ductility, thiab txo qis kev ntxhov siab tom qab ua haujlwm txias.
Kev kho mob / kev laus: Tsis muaj cov nyhuv hardening.
Strengthening mechanism: Tib txoj kev los ua kom muaj zog hauv Qib 2 yog los ntawm kev ua haujlwm txias (strain hardening).
Cov ntsiab lus:
Qib 2 titanium yog cov hlau tsis muaj cua sov. Nws cov khoom siv kho tshuab yog tswj feem ntau los ntawm chemistry (tshwj xeeb yog cov ntsiab lus oxygen) thiab ua haujlwm txias, tsis yog los ntawm kev kho cua sov.
