Cov txiaj ntsig zoo ntawm lub ntiaj teb tsis tshua muaj rau cov khoom siv hlau tsis yog hlau yog pom tseeb tshaj plaws hauv magnesium alloys.Tsis yog tsuas yog ua kom muaj kev ntxhov siab rau Mg-RE alloy hom, tab sis kuj muaj kev cuam tshuam zoo heev rau Mg-Al, Mg-Zn thiab lwm cov tshuab hlau.Nws lub luag haujlwm tseem ceeb yog raws li hauv qab no:
1. Kho cov nplej
Kev tsim nyog lygs ntawm tsawg lub ntiaj teb tuaj yeem kho cov nplej ntawm magnesium thiab magnesium alloys.Thawj yog los kho cov grainofs ntawm cov txheej txheem casting.Lub mechanism ntawm casting txheej txheem ntawm lub ntiaj teb tsis tshua muaj cov ntsiab lus rau refine magnesium alloy tsis yog qhov kev txiav txim ntawm heterogeneous nuclei.Lub mechanism ntawm nplua nplej refinement ntawm magnesium thiab magnesium alloy grain sinofs ntawm lub ntiaj teb tsis tshua muaj ntsiab yog qhov nce ntawm overcooling ntawm txiav ntug ntawm crystallization.Qhov thib ob yog los tiv thaiv recrystallization thiab grain loj hlob nyob rau hauv lub tshav kub ua txheej txheem thiab cov txheej txheem annealing.
2. Purifying melts
Cov ntsiab lus tsis tshua muaj hauv ntiaj teb muaj kev sib raug zoo nrog khaus dua li magnesium thiab oxygen, yog li lawv tuaj yeem tso nrog Rare Earth oxides uas hnov mob nrog Mgo thiab lwm yam oxides hauv cov yaj thiab tom qab ntawd tshem tawm oxidizing.Reacts nrog hydrogen thiab dej vapor nyob rau hauv lub yaj, tsim los yog tsawg lub ntiaj teb oxides uas ncav cuag lub hom phiaj ntawm deoxygenation.Ua ke kuj tseem tuaj yeem ntxiv yaj fluidity thiab txo qis casting shrivellability, kev vam meej fineness.
3. Progressive chav kub alloy lub zog
Feem ntau cov ntsiab lus tsis tshua muaj hauv ntiaj teb hauv magnesium muaj qhov loj ntawm cov khoom solubility, thiab nrog rau qhov kub thiab txias selyses muaj qhov hloov pauv loj ntawm cov qib solubility, yog li cov ntsiab lus tsis tshua muaj hauv ntiaj teb ntxiv rau cov khoom siv-soluble reinforcement, tseem yog ib qho tseem ceeb ntawm kev laus zog. ntawm magnesium alloy, qee qhov tsis tshua muaj ntiaj teb sib txuas thiab dispersive reinforcement.
4. Thermal stability ntawm progressive alloy mechanical functions
Cov ntsiab lus tsis tshua muaj hauv ntiaj teb yog cov ntsiab lus tseem ceeb tshaj plaws ntawm magnesium alloy thaum tshav kub kub ua haujlwm, tuaj yeem txhim kho qhov kub thiab txias zog ntawm Mg alloy thiab kub creep tsis kam, yog vim li cas muaj ntau yam: tsawg lub ntiaj teb stenome coefficient hauv magnesium yog me me, tuaj yeem qeeb. down tus txheej txheem recrystallization thiab kev nce qib recrystallization kub, ntxiv cov nyhuv aging thiab desoluble theem thermal stability, Lub ntiaj teb tsis tshua muaj compound nrog siab melting point snouts siv lead ua ciam ciam, tiv thaiv cov misalignment ntawm cov lus tsa suab, thiab nce siab kub creep kuj.
5. Progressive alloy corrosion kuj
Vim hais tias cov yaj yog purified, cov teeb meem ntawm impurity hlau, thiab lwm yam yog txo, thiab ces cov corrosion kuj yog zoo dua.