Lub Zr -2 niobium alloy

1. Dab tsi yog Astm qib ntawm Zr -2 niobium alloy?

ASTM kev tsim qauv:

B551/B551M: Txheem kev qhia tshwj xeeb rau seamless zirconium thiab zirconium alloy tubing rau nucoy kev thov .

B550/B550M: Txheem kev qhia tshwj xeeb rau zirconium thiab zirconium alloy bille thiab tuav rau nuclear thov .

Tus lej tsis yog:

R60802(Tsis yog R60000 series rau zirconium alloys) .

Nuclear qib:

Feem ntau hu uaZr -2nyob rau hauv nuclear kev lag luam qauv (e {{{0} g .}, ASTM, ASME) {2} {2}

2. Dab tsi yog cov cuab yeej ua haujlwm ntawm zr -2 niobium alloy?

Ntiag tug	Tus nqi
Ceev	~ 6. 6.56 g / cm³
Melting taw tes	~ 1,855℃(3,371℃f)
Yield zog (RT)	~ 275 MPa (40, 000 psi)
Tensile lub zog (RT)	~ 380 MPa (55, 000 psi)
Elongation thaum so	~25%
Modulus ntawm elasticity	~ 99 GPA (14,400 KSI)
Poisson tus piv	~0.33

3. Dab tsi yog tshuaj lom neeg muaj pes tsawg leeg ntawm fs -85 niobium alloy?

Lub ntsiab	Zoo siab	Lub luag hauj lwm
Zirconium (ZR)	~97.2%	Luj hlau; muab corrosion tsis kam thiab neutron nqus .
Tin (Sn)	1.2–1.7%	Ntxiv dag zog rau alloy thiab txhim kho corrosion tsis kam nyob hauv dej .
Hlau (FE)	0.07–0.20%	Cov ntaub ntawv intermetallic (e {. g}, zr (Fe, Cr) .
Chromium (cr)	0.05–0.15%	Zoo ib yam li fe; txhim kho kom tiv thaiv oxide tsim hauv qhov kub-dej .
Npib tsib caug (ni)	0.03–0.08%	Txhim kho kom tsis kam rau corrosion nyob rau hauv acidic ib puag ncig .
Niobium (nb)	Tsawg dua los yog sib npaug rau 0.05%	Lw Elem; tsis yog ib qho kev sib txuam ua ntej hauv zr -2.

info-444-429 info-450-439

info-448-433 info-445-439

4. Dab tsi yog daim ntawv thov ntawm zr -2 niobium alloy?

Nuclear Roj Cladding:

Tubing uas encases nuclear roj rods hauvCov Khoom Siv Dej Roj Reactors (PWRMs)thiabBoiling dej reactors (BWRMs){{0 {}} nws qhov nruab nrab tsis haum me me cuam tshuam me me cuam tshuam nrog cov txheej txheem fission.

Reactor Cov Qauv Cheebtsam:

Cov Txheej Txheem Txheej Txheem, Qhia Cov Hlaws, thiab spacers nyob rau hauv nuclear reactors, qhov twg tsis kam rau corrosion los ntawm dej kub thiab chav yog qhov tseem ceeb .

Nuclear Khib Cia:

Canisters rau khaws cia cov khoom siv hluav taws xob vim nws lub sijhawm ntev corrosion tsis kam nyob hauv dej .

5. Dab tsi yog qhov zoo ntawm Zr -2 niobium alloy?

Tshwj kev txiav txim siab corrosion tsis kam:

Resigts oxidation thiab corrosion nyob rau hauv cov dej kub siab (txog ~ 350 degree) thiab chav ib puag ncig) thiab chav ib puag ncig hauv nuclear reactors.

Tsawg Neutron Kev Ua Haujlwm:

Minimizes Neutron ntes, tso cai rau kev kho mob flux zoo rau kev txhawb nqa nuclear tau zoo {}}

Cov Khoom Zoo Cov Khoom Siv:

Nyuaj lub zog, ductility, thiab nkees tsis kam nyob rau hauv reactor tej xwm txheej (e {}}}

Radiation Kuj:

Tswj cov qauv kev ruaj ntseg thiab o o hauv nruab nrab iradiation, tseem ceeb rau kev ua haujlwm ntev .

Hwj txwv:

Tuaj yeem tso cai welded siv cov txuj ci zoo li Tigrication, e {}} {.

Compatibility nrog Lo Lus Txias:

Tsis muaj kev xav nrog dej lossis chav siv ua haujlwm ua kom txias hauv lub teeb ci hauv lub teeb, tiv thaiv kev paug .