High-Performance Oxide Dispersion-Strengthened Alloys tuaj yeem siv nyob rau hauv cov tiam tom ntej nuclear reactors
Kev lag luam nuclear muaj cov kev xav tau siab ntawm kev ntseeg siab ntawm cov khoom siv hluav taws xob reactor, xav tau cov ntaub ntawv kom muaj cov hluav taws xob zoo, cov khoom siv hluav taws xob kub siab thiab tsis kam mus rau qhov tsis muaj qhov nthuav dav, vim tias cov ntaub ntawv yuav tsim cov kab noj hniav thaum raug hluav taws xob neutron, ua rau lub tshuab tsis ua haujlwm. Oxide dispersion-strengthened alloys muaj qhov zoo ntawm qhov kub thiab txias, tswj kev nruj tsis muaj deformation ntawm qhov kub thiab txias, thiab feem ntau ntawm lawv tuaj yeem tiv taus qhov kub thiab txias ntawm 1000 ° C, tab sis cov khoom lag luam oxide dispersion-strengthened alloys muaj qhov tsis xws luag, uas yog, lawv. raug rau cov neutrons heev.
Kev tiv thaiv tsis muaj kev nthuav dav thaum irradiated tsis muaj zog. Thaum Lub Peb Hlis 2021, Texas A&M Engineering Experiment Station, Los Alamos National Laboratory, thiab Hokkaido University hauv Nyij Pooj tau sib koom ua ke tsim cov txheej txheem tom ntej uas muaj kev ua tau zoo oxide dispersion-strengthened alloy uas tuaj yeem siv rau hauv nuclear fission thiab fusion reactors. Tus tshiab oxide dispersion ntxiv dag zog rau alloy kov yeej qhov teeb meem no los ntawm embedding nano-oxide hais rau hauv martensitic metallographic qauv, txo qhov tsis muaj qhov nthuav dav, thiab qhov tshwm sim oxide dispersion ntxiv dag zog rau alloy tuaj yeem tiv taus txog li 400 ib atom. Nws yog ib qho zoo tshaj plaws alloys tsim nyob rau hauv daim teb no nyob rau hauv cov nqe lus ntawm kub kub lub zog thiab o tsis kam.
Tam sim no, US Army, Navy thiab Marine Corps tab tom sim sim thiab tshuaj xyuas cov khoom sib xyaw ua ke los hloov cov khoom siv tooj dag hlau. Nyob rau lub Tsib Hlis 2021, Marine Corps tau ua tiav qhov kev kuaj xyuas ib puag ncig kev ua tau zoo ntawm 12.7mm cov mos txwv cartridge sib xyaw thiab npaj txhij los ua qhov kev sim. Sib txawv ntawm cov mos txwv tooj dag, MAC siv cov yas thiab tooj dag ua ke los txo qhov hnyav ntawm cov mos txwv los ntawm 25%, ua rau cov mos txwv nqa peev xwm ntawm cov tub rog zoo tib yam los ntawm 210 mus rau 300 puag ncig.
Tsis tas li ntawd, lub teeb yuag no muaj qhov tseeb dua, muzzle tshaj tawm thiab kev ua haujlwm zoo dua. Thaum tua nrog cov mos txwv plhaub sib xyaw, vim qhov tsis zoo thermal conductivity ntawm cov yas, cov cua sov ntawm cov mos txwv tsis yooj yim hloov mus rau lub thoob thiab lub thoob, uas tuaj yeem txo cov cua sov ntawm lub thoob thiab hauv lub thoob thaum lub sij hawm firing ceev, qeeb qeeb. qhov hnav thiab tsim kua muag ntawm cov khoom siv thoob. Ablation, ncua lub neej ntawm lub thoob. Nyob rau tib lub sijhawm, qhov txo cov cua sov tsim nyob rau hauv lub chim thiab chamber tso cai rau cov phom loj los yog rab phom tshuab kom tua ntev dua.
Yog tias koj siv M113 lub tshuab hluav taws kub ceev ceev kom tua tau 1500 qhov sib tw ntawm cov mos txwv tooj dag, cov mos txwv yuav kub hnyiab vim qhov kub kub hauv lub thoob (qhov kub siab dhau los ua rau cov mos txwv hauv cov mos txwv), thiab hluav taws kub nyhiab; Thaum M113 lub tshuab hluav taws xob ceev ceev yog siv los tua cov mos txwv cov khoom siv ceev ceev Thaum tua, qhov kub hauv lub chim thiab chamber yog 20% qis dua thaum tua cov mos txwv tooj dag, thiab cov mos txwv raug rho tawm kuj tau nce mus rau 2,200 rounds. .
Yog tias qhov kev xeem dhau, Marine Corps tuaj yeem siv 12.7mm cov mos txwv sib xyaw los hloov cov mos txwv tooj dag kom txo qhov hnyav ntawm cov mos txwv.
Post lub sij hawm: Lub Xya hli ntuj-25-2022