Kuv. Lub hauv paus rau phau ntawv
Titanium alloys, characterized by high strength (yield strength ≥1000 MPa), low density (4.54 g/cm³), and exceptional corrosion resistance, are critical for deep-sea engineering under extreme pressures (>70 MPA) thiab qis kub (2-4 degree). -Inomorphous stabilizers (piv txwv li, mo, mo, v) txhim kho theem sib luag ω-theem txaus nyiam vt23 thiab vt22 zoo tagnrho rau cov ntawv thov kev tsim qauv.
Ii. Phase hloov pauv thiab lub zog evolution
Cov -Phase Ruaj Ruaj ([MO] EQ. Qhov ntau tshaj plaws nyuaj tshwm sim thaum stabizer ntau dua c'thiab seep, tab sis saum toj no hauv qab c'thiab saum toj, tab sis saum toj no hauv qab no.
Russia VT23 Alloy tau ua tiav qhov sib npaug ntawm lub zog (1050-1100 MPa tawm los) thiab kev tswj hwm los ntawm precise -phas tswj, nrog [] eq. ze c'.
III. Thermal ntxiv dag zog ntawm vt23 alloy
Txheej txheem optimization
A gradient quenching method (860°C heating → air cooling → 625°C aging) enables uniform hardening across 150mm-thick VT23 semi-finished products, overcoming traditional quenching limitations at >100 hli tuab.
This technique is validated in deep-sea pressure hulls, extending service life by >3 × piv rau cov hlau.
Vuam cov nyom
ARC / Electron nqaj welding reduces weld cheeb tsam lub zog los ntawm 20-30%. Tom qab kev kho cua sov (pWd) hauv inert / nqus ib puag ncig siv cov hlau sib xyaw ua ke (gost} tus qauv kev phooj ywg ntawm weld hlau thiab cov khoom siv hlau.
Zos Kev Kho Mob Cua Sov thiab Cov Txheej Txheem Kev Txhim Kho (piv txwv li Hemispherical Sib Nqus-Teeb Duab) Tsawg Vuam ntim hauv VT22 Alloy Hulls.
IV. Vt22 alloy nyob rau hauv tob-hiav txwv submersibles
VT22, ib qho ze- alloy, yuav tsum muaj thermal tawv rau ob qho khoom siv hauv paus thiab welded pob qij txha. Cov qauv loj loj (piv txwv li, kheej kheej hullic hulls) tau txais txiaj ntsig zoo li kev sib sib zog nqus-kos duab los yog kev zam txim ntau rau txo cov thermal distortion.
Nrum titanium alloys (piv txwv li, ti -5 al -2. 5sn Eli) Nrog rau Russia's Mir-classpasples.
V. Yav Tom Ntej Cov Lus Qhia
Cov Khoom Siv Kev Tsim Kho
Russia's Prometheus Institute is advancing alloys with >1000 MPA tawm lub zog thiab cov vuam vuam tshiab rau cov txheej txheem los ua cov thawj coj hauv marine titanium.
Adillitive kev tsim khoom (piv txwv li, xaiv Laser melting) thiab hybrid -stabizer formulations tsim lub hom phiaj los txo cov nqi los ntawm 30% thaum txhim kho kev ua tau zoo.
Daim Ntawv Thov nthuav dav
Titanium alloys tseem txuas ntxiv mus rau tob-pipelines (corrosion tus nqi<0.002 mm/year) and tidal turbines (fatigue life >10⁷ Cycles).
Tuam Tshoj tus jiaolong submersible (7000m-rated ti {2}} al {}} v Hull) ua piv txwv titanium lub luag haujlwm.
Tag
High-strength β-stabilized titanium alloys, exemplified by VT23 and VT22, are revolutionizing deep-sea engineering through optimized phase control and manufacturing innovations. Russia's advancements in hull fabrication and China's operational validations underscore titanium's indispensability for next-generation submersibles targeting >11, 000 m}.