Magnesium alloy
Txhais ntawm magnesium alloy
Magnesium alloy yog cov hlau uas muaj magnesium thiab lwm yam khoom. Nws yog tus cwj pwm los ntawm: tsawg ntom (1.8g / cm3 magnesium alloy), muaj zog tshwj xeeb, loj tshwj xeeb elastic modulus, zoo cua sov dissipation, zoo poob siab, muaj peev xwm muaj peev xwm ntau dua li aluminium alloy, zoo corrosion kuj rau organic teeb meem thiab alkali.
Lub ntsiab alloying ntsiab yog txhuas, zinc, manganese, cerium, thorium thiab ib tug me me ntawm zirconium los yog cadmium. Tam sim no, magnesium aluminium alloy yog siv dav tshaj plaws, ua raws li magnesium manganese alloy thiab magnesium zinc zirconium alloy. Feem ntau siv hauv aviation, aerospace, tsheb thauj mus los, tshuaj lom neeg, foob pob ua ntxaij thiab lwm yam kev lag luam. Nws yog cov hlau lightest nyob rau hauv cov tswv yim hlau, thiab lub ntiajteb txawj nqus ntawm magnesium yog hais txog 2/3 ntawm txhuas thiab 1/4 ntawm hlau. Nws yog cov hlau lightest ntawm cov tswv yim hlau, muaj zog thiab siab rigidity.
Magnesium alloy khoom yam ntxwv
Tsawg ceev, kev ua haujlwm zoo, kev ua haujlwm zoo poob siab, zoo hluav taws xob thiab thermal conductivity, kev ua haujlwm zoo, tsis zoo corrosion tsis kam, yooj yim oxidation thiab hlawv, tsis zoo cua sov.
Nws cov txheej txheem thiab corrosion thiab mechanical zog muaj ntau yam ntxwv: ceev kub dissipation, lub teeb yuag, zoo rigidity, nrog ib tug tej yam corrosion kuj thiab seem stability, cuam tshuam tsis kam, hnav tsis kam, zoo attenuation kev ua tau zoo thiab yooj yim rau recycle; Tsis tas li ntawd, muaj cov thermal thiab hluav taws xob conductivity siab, tsis muaj hlau nplaum, tiv thaiv zoo thiab cov yam ntxwv tsis muaj tshuaj lom.
Daim ntawv thov: Magnesium alloy yog dav siv hauv cov khoom siv nqa tau thiab kev lag luam tsheb kom ua tiav lub hom phiaj ntawm lub teeb yuag.
Qhov sib txawv ntawm magnesium alloy thiab aluminium alloy
Qhov sib txawv ntawm magnesium alloy thiab aluminium alloy muaj xws li: sib txawv tensile lub zog, sib txawv qaug zog tsis kam, sib txawv hlau oxidation, txawv manufacturing nqi, txawv lub ntiajteb txawj nqus ceev, thiab txawv elastic modulus.
Sib txawv tensile zog
Lub zog ntawm cov khoom ua los ntawm tib lub ntim ntawm magnesium alloy khoom yog qis dua li ntawm aluminium alloy. Txhawm rau kom ua tiav lub zog, cov ntaub ntawv magnesium alloy xav tau cov khoom siv ntau ntxiv thiab cov yeeb nkab ntev, yog li tsis muaj qhov zoo dua aluminium alloy nyob rau hauv cov nqe lus ntawm qhov hnyav.
Lub zog qaug zog txawv
Lub durability ntawm thav duab ua los ntawm tib lub ntim ntawm magnesium alloy yog phem dua li ntawm cov aluminium alloy thav duab, uas yog ib tug tuag shortcoming ntawm magnesium alloy. Nrog rau kev nce ntawm tus naj npawb ntawm kev caij tsheb, lub zog ntawm magnesium alloy thav duab yuav txo qis, thiab txawm tias tus ncej lub neej yuav tsis tshaj 2-3 xyoo. Yog li ntawd, magnesium alloy thav duab tsis tshua muaj siv los ntawm cov neeg caij tsheb.
Cov hlau muaj cov khoom sib txawv oxidation
Lub sij hawm lub sij hawm ntawm cov ntsiab lus qhia tau hais tias magnesium alloys yooj yim corroded los ntawm oxidation dua aluminium alloys.
Cov nqi tsim khoom sib txawv
Magnesium alloys yog cov hlau nquag, uas muaj cov kev xav tau siab dua rau kev tsim khoom thiab ib puag ncig, ua rau cov nqi tsim khoom siab. Cov khoom tsim magnesium alloy cov khoom lag luam muaj nqi tsawg dua li aluminium alloy 234.
Sib txawv tshwj xeeb gravity ntom
Nyob rau hauv tib lub ntim mob, magnesium alloy yog sib dua li aluminium alloy. Qhov no yog qhov tseem ceeb ntawm magnesium alloy 234.
Lub elastic modulus yog txawv
Lub rigidity ntawm magnesium alloy khoom yog tsawg dua li ntawm aluminium alloy. Lub thav duab ua los ntawm cov khoom siv magnesium alloy tsis nruj dua li ntawm aluminium alloy thav duab, thiab cov thav duab ua los ntawm tib lub thickness thiab cov yeeb nkab txoj kab uas hla yuav nqus tau ntau dua trampling quab yuam thaum caij tsheb thiab cuam tshuam rau kev caij tsheb.11
Ob lub alloys txhua tus muaj qhov zoo thiab qhov tsis zoo, thiab daim ntawv thov teb kuj txawv. Thaum xaiv siv, nws yog ib qho tsim nyog yuav tsum txiav txim siab raws li kev thov tshwj xeeb thiab cov xwm txheej.
Ntau qib ntawm magnesium alloy txheem txheej txheem cov ntsiab lus
| Qib steel | Al: | Si: | Cu: | lwm yam: | Zn: | Ua: | Mg: | Fe: | Mn: | Ni: | Ca: |
| TIAB SA 91D | 8.5-9.5% | 0.05% max | 0.025% max | 0.01% max | 0. 45-0.9% | 0.004% max | paj ntaub | 5-30PPM | {{0}}.17 rau 0.4% | 0.001% Max | -- |
| AM 50 A | 4.5-5.3% | 0.05% max | 0,008% max | 0.01% max | 0.2% max | 0.004% max | paj ntaub | 5- 30PPM | 0.28-0.5% |
0.001% max | -- |
| AM6 OB | 5.6-6.4% max | 0.05% max | 0,008% max | 0.01% max | 0.2% max | 0.004% max | paj ntaub | 5- 30PPM | 0.26-0.5% | 0,001% max | -- |
| YOG 08 | 7.5-9.2% | 0.1% max | 0, 05% max | 0.005% max | 0.2-0.8% | 0.05% max | paj ntaub | 5- 30PPM | 0.15-0.5% | 0.005% max | -- |
| UA 80 | 8-9.2% | 0.1% mar | 0.05% Max | 0.03% Max | 0.2-0.8% 0. |
0.05% max | paj ntaub | --- | 0.12-0.5% | 0.005% max | -- |
| UA 21 | 2-3% | 0.05% max | 0.05% max | 0.3% max | 0.5-1% | 0.003% mar | paj ntaub | --- | 0.4% max | 0.001% max | 0.04% max |
| AS 31 | 3.3-4.0% | 0.7-1.15% | <0.008% | <50ppm | 0.05-0.2% | <0.0035% | 5-15ppm | <0.20% | 0.25-0.5% | <0. 001% | Lwm yam impurities: < 0.01% |
| ZAJ 63 | 5.3-6.7% | 0.05% max | 0.01% max | Hmax | 2.5-3.5% | 0.003% max . | paj ntaub | 10-20ppm | 0.15-0.5% |
0.005% max | |
| UA 40 | 3.5-4.0% | 0.1% max | 0.05% max | 0.01% max | 0.2-0.8% | 0.05% max | paj ntaub | --- | 0.2-1.0% | 0.001% max | |
| A231 | 2.5-3.5% | 0.05% max | 0.01% max | 0.3% max | 0.7-1.3% | 0.003% max | paj ntaub | --- | 0.2-1.0% | 0.001% max 0.04% max |
|
| A261 | 5.9-6.6% | 0.1% max | 0.05% max | 0.03% max | 0.7-1.5% | -- | -- | 0.05% max | 0.15-0.4% |
Cov yam ntxwv ntawm magnesium alloy
Magnesium alloy yog cov khoom siv hluav taws xob zoo tshaj plaws. Qhov tshwj xeeb lub ntiajteb txawj nqus tsuas yog 1.8, uas yog 2/3 ntawm txhuas thiab 1/4 ntawm hlau, thiab nws lub zog tshwj xeeb yog siab li 133, uas tuaj yeem sib piv rau lub zog tshwj xeeb ntawm titanium, uas ua rau magnesium alloy tuaj yeem siv los ua cov khoom siv muaj zog heev. Nyob rau tib lub sijhawm, magnesium alloy vim nws zoo heev casting, extrusion, txiav thiab dabtsi yog khoov cov khoom, tuaj yeem siv dav hauv tsheb, hluav taws xob, textile, kev tsim kho thiab tub rog.
Lub teeb nyhav
Resistance rau deformation
Shock absorption thiab txo suab nrov
Dimensional stability
tractability
Siab nruj piv
yam ntxwv
● Lub teeb yuag, hlau hlau yog tam sim no cov khoom siv hluav taws xob zoo tshaj plaws hauv kev siv tswv yim hauv ntiaj teb.
● Lub zog tshwj xeeb siab. Qhov piv ntawm lub zog rau huab hwm coj ntawm magnesium alloy yog siab thiab nws muaj qee yam kabmob muaj peev xwm.
● Me me elastic modulus, zoo rigidity, muaj zog seismic quab yuam, siv ntev tsis yooj yim rau deform.
● Zoo tiv thaiv electromagnetic cuam tshuam thiab tiv thaiv.
● Tsis muaj kuab paug rau ib puag ncig.
Hom ntawm magnesium alloy:
Lub npe alloy ntawm magnesium alloy yog raws li cov ntsiab lus ntxiv alloy thiab nws cov feem pua.
Cov yam ntxwv ntawm magnesium alloys
Nws yog cov hlau lightest ntawm cov tswv yim hlau
Lub ntiajteb txawj nqus tshwj xeeb ntawm magnesium yog kwv yees li ob feem peb ntawm txhuas thiab ib feem peb ntawm cov hlau. Nws yog qhov lightest ntawm cov tswv yim hlau.
Daim ntawv thov: Magnesium alloy yog dav siv hauv cov khoom siv nqa tau thiab kev lag luam tsheb kom ua tiav lub hom phiaj ntawm lub teeb yuag.
Kev sib piv ntawm lub cev muaj zog ntawm ntau yam ntaub ntawv
| Khoom npe |
Qhov ntom (g / cm³) |
Fusing point ("C) |
Thermal conductivity (W/Mk) |
Tensile zog (MPa) |
Yield point (MPa) | |
Tus nqi ntawm elongation (%) |
Lub zog tshwj xeeb |
Young's modulus (GPa) |
|
| magnesium alloys | ZAJ 91 | 8 | |||||||
| AN60 | |||||||||
Raws li ib qho ntawm cov ua magnesium alloy manufacturers thiab lwm tus neeg nyob hauv Suav teb rau 20 xyoo, peb sov siab txais tos koj mus yuav magnesium alloy ua nyob rau hauv Suav teb nov los ntawm peb lub hoobkas. Tag nrho cov khoom yog nrog cov khoom zoo thiab cov nqi sib tw.