Cov khoom ntawm Nb521 niobium-tungsten alloy

Tungsten yog ib qho kev txhawb zog zoo rau niobium, tab sis nrog kev nce ntxiv ntawm tungsten, lub plasticity thiab brittle hloov kub ntawm cov hlau yuav nce, thiab cov nplej yuav loj hlob. Yog li ntawd, kom tau txais lub zog muaj zog niobium-tungsten alloy, yuav tsum tsim nyog los tswj qhov sib ntxiv ntawm tungsten, tab sis kuj yuav tsum tsim nyog los koom nrog cov nplej refinement, txo cov plasticity ntawm qhov kub thiab txias ntawm cov ntsiab lus xws li zirconium thiab hafnium, thiab lwm yam. . 1961, Tebchaws Meskas tau tsim muaj kev vam meej Nb-10W-2.5Zr alloy siv rau qhov chaw shuttle daim tawv nqaij, thiab tom qab ntawd tsim los ua Nb-10W-1Zr{ {8}}.1C alloy. thaum ntxov 70's, Tuam Tshoj kuj NbWl0Zr2.5 thiab NbWl0Zr1C0.1 alloys tau ntse tsim nyob rau hauv Suav teb thaum ntxov 1970s.

Niobium-tungsten alloys tuaj yeem muab faib ua cov khoom sib xyaw ua kom muaj zog alloys thiab cov alloys ua ke nrog cov khoom siv ntxiv dag zog thiab diffusion ntxiv dag zog raws li txoj kev ntxiv dag zog.

Txij li thaum xyoo 1999, cov chav nyob hauv tsev aerospace tau nrhiav ib hom tshiab ntawm niobium-raws li alloy uas tuaj yeem siv tau ntawm qhov kub ntawm ntau tshaj 1600 degree. Ningxia Oriental Tantalum Kev Lag Luam Co., Ltd. thiab Northwest Nonferrous Metals Research Institute tau ua tiav ob lub alloys, Nb521 (Nb-5W-2Mo-1Zr- 0.01C) thiab Nb522 (Nb-5W-2Mo-2Zr), uas raug hu ua niobium-tungsten alloys.

Cov alloys no yog alloyed nrog W, Mo, thiab Zr li alloying ntsiab, thiab lub ntsiab ntxiv dag zog rau lub cev muaj zog cov ntsiab lus, nrog recrystallization kub ntawm 1350 degree mus rau 1500 degree. Ntawm lawv, Nb521 kuj tseem siv 600-1000ppm C cov ntsiab lus los tsim NbC, ZrC theem thib ob, kev daws teeb meem + nag lossis daus ntxiv txoj hauv kev los txhim kho cov alloy lub zog thiab kev ua haujlwm.

Niobium-tungsten alloy muaj qhov ntom ntom zoo sib xws (8.6-9.0g-cm-3) thiab lub zog kub kub zoo dua piv nrog C103 alloy. Txawm li cas los xij, vim yog qhov sib ntxiv ntawm ntau tus W, Mo thiab lwm yam kev txhawb zog, lub ingot ntawm chav tsev kub lub zog yog siab dua, lub plasticity tsis zoo, nyob rau hauv lub ingot ua ntawm high-temperature extrusion yog siv los ua kom cov ingot grain. . Lub plasticity ntawm lub alloy ingot yog zoo heev tom qab extrusion, thiab qhov yuav tsum tau specifications ntawm rods, daim hlau thiab forgings, spinning qhov chaw yuav tau txais los ntawm forging, dov, spinning thiab lwm yam kev ua.
Cov tshuaj muaj pes tsawg leeg ntawm NB521 niobium-tungsten alloy:

Zr: 075-0.98

Mo: 1.60-2.10

W: 4.5-5.1