Sichualo Hoflu Tshwj xeeb Steel tuam txhab yog ib qho ntawm cov neeg tsim khoom thiab cov khoom lag luam ntawm maraging 300 sib npaug ntawm Seel hauv Suav teb. Nrog ntau tshaj 20 xyoo kev paub, peb lub Hoobkas muaj cov khoom lag luam zoo hauv Suav teb nrog cov nqi sib tw. Txais tos tiv tauj peb rau kev pabcuam lag luam wholesale.

Tom qab ob peb xyoos kev txhim kho, cov khoom lag luam steel lag luam, lub tuam txhab tau ua tiav cov cuab yeej muaj zog ntau lawm, cov khoom lag luam muaj cov khoom lag luam ua tau zoo tshaj plaws.

Maraging hlau c300 ua chav kawm ntawm cov hlau lag luam. Cov pab pawg ntawm cov ntaub ntawv muaj lub martensit cov qauv siv lead ua thiab muaj zog ntawm
Kev laus ntawm kwv yees li 500℃(900℃f), li no lub npe 'maraging'. Cov ultra-tsawg cov pa roj carbon ntau muaj zog heev thiab
Hardness cov khoom tau muab tau los ntawm nag lossis daus ntawm Intermetallic cov ntsiab lus tsis yog cov ntsiab lus carbon.
Nickel yog lub ntsiab lus tseem ceeb tshaj, nrog cobalt, molybdenum, thiab titanium raws li theem nrab intermetallic alloying hlau.
Marages Steel M300 tseem hu ua 1.2709

Maraging 300 yog lub hnub nyoog nyuaj (maraging) hlau npib tsib xee stainless hlau. Maraging 300 muaj qhov tshwj xeeb muaj zog, kev nruj thiab tiv taus kom tsis txhob muaj kev tshaj tawm. Maraging 300 yog siv rau kev txua, xa cov khoom xa tawm, cov khoom siv autosport thiab lub teeb aircraft tsaws iav.

Lwm Cov Ntaub Ntawv Qhia
Ams 6514
UN tsis K93120

Maraging 300 Hlau Tshuaj Muaj Zog:

C	Si	Mn	S	P	Ni	Co las	Mo	Ti	Al	Cr	CU
Tsawg dua los yog sib npaug rau 0.030	Tsawg dua los yog sib npaug rau 0.10	Tsawg dua los yog sib npaug rau 0.10	Tsawg dua los yog sib npaug rau 0.01	Tsawg dua los yog sib npaug rau 0.01	18.0/19.0	8.50/9.50	4.60/5.20	0.50/0.80	0.05/0.15	Tsawg dua los yog sib npaug rau 0.5	Tsawg dua los yog sib npaug rau 0.5

Tom qab quenching thiab tempering tshuab cov cuab yeej:

σb

MPa

σ0.2

MPa

δ5

AKV

Kic

Hrc

Ntau dua los yog sib npaug rau 2255

Ntau dua los yog sib npaug rau 2155

Ntau dua los yog sib npaug rau 7

Ntau dua los yog sib npaug rau 38

Ntau dua los yog sib npaug rau 7

Kev sim tiag

Ntau dua los yog sib npaug rau 50

Peb kuj tseem tuaj yeem tsim cov marging c 300= Ams 6514 Hlau Thiab Marade {} {} asm}

Cov qib ntawm Maraging Steel

Cov hlau ua haujlwm feem ntau tau piav qhia los ntawm tus lej (piv txwv li, 250, 300), uas qhia txog kev kwv yees ib txhiab phaus (ksi); Qhov muaj pes tsawg leeg thiab cov muaj feem tau txhais hauv Asmeskas cov tub rog cov qauv mil-s-4685050d.^[8]Cov qhab nia siab dua muaj ntau cobalt thiab Titanium hauv cov alloy; Cov ntawv cim hauv qab no yog coj los ntawm rooj 1 ntawm MIL-S-468505050U:

Marages Steel sib sau ua ke, los ntawm qib
Lub ntsiab	Qeb 200	Qeb 250	Qeb 300	Qeb 350
Liv	seem	seem	seem	seem
Tus menyuam yaus	17.0–19.0	17.0–19.0	18.0–19.0	18.0–19.0
Khaib	8.0–9.0	7.0–8.5	8.5–9.5	11.5–12.5
Molybdenum	3.0–3.5	4.6–5.2	4.6–5.2	4.6–5.2
Titanium	0.15–0.25	0.3–0.5	0.5–0.8	1.3–1.6
Tooj dawb	0.05–0.15	0.05–0.15	0.05–0.15	0.05–0.15
Lub zog tensile, mpa (ksi)	1,379 (200)	1,724 (250)	2,068 (300)	2,413 (350)

Lub tsev neeg ntawd yog lub npe hu ua 18NI cov hlau ntoo cov hlau, los ntawm nws cov npib tsib xee. Kuj tseem muaj tsev neeg ntawm cobalt-dawb maraging steels uas pheej yig dua tab sis tsis heev li muaj zog; Ib qho piv txwv yog FE-18.9NI-4.1MO-1.99. Muaj kev tshawb fawb Lavxias thiab Japanese tshawb nrhiav hauv Fe-Ni-MN Marloyme

Kev Kho Cua Sov
Cov hlau yog thawj annaled ntawm kwv yees li 820℃(1,510℃f) rau cov ntu nyias thiab rau) tuab rau cov qauv ntawm cov qauv ua kom tiav. Qhov no yog ua raws li los ntawm huab cua txias los yog quenching mus rau chav sov los ua tus mos mos los tsim cov hlau, hnyav dua hlau-npib lath (untwinned) martensite. Cov kev laus tom qab (nag lossis daus ntau ntau rau kwv yees li 3 teev ntawm kev sib tsoo ntawm NI3 (X, Y) Overaging ua rau kev txo qis hauv qhov ruaj khov ntawm thawj, kev nthuav dav, ua rau lawv cov kev sib cais thiab hloov ua ke nrog ntu ib ntu xws li Fe2Ni. Ntxiv cov kev kho cua sov ntau dhau los ntawm kev txiav txim siab ntawm lub martensite thiab thim rov mus rau Austenite.

Cov khoom lag luam tshiab ntawm cov hlau nplaum tau qhia lwm tus Intermetallic Stoichiometries Kev sib raug zoo thiab muaj rhombohedral thiab loj heev complex ni50 (x, y, z)

Tuam txhab Lus Taw Qhia ntawm Yutobe https://www.youtube.com/watch?v662}

Maraging 300