1. Hlau, manganese thiab npib tsib xee yog cov khoom tseem ceeb ntxiv hauv txhuas bronze. Yog li ntawd, complex aluminium bronzes muaj xws li Cu-Al-Fe, Cu-Al-Mn, Cu-Al-Fe-Mn, Cu-AlFe-Ni thiab Cu-Al-Fe.
Mn-Ni system.
Ntxiv hlau rau Cu-Al alloy inhibits lub decomposition ntawm → ntxiv 2 thiab tiv thaiv embrittlement los ntawm spontaneous annealing. Tsis tas li ntawd, ntxiv ib qho nyiaj ntawm cov hlau tuaj yeem tsim cov khoom zoo FeAl3, uas tuaj yeem siv los ua
Lub non-spontaneous crystal nuclei refine cov nplej nyob rau hauv lub as-cast qauv.
2. Lub solubility ntawm manganese nyob rau hauv Cu-Al alloy yog loj, uas yuav ua rau kom muaj zog tshuaj ntxiv zog. Qhov tseem ceeb tshaj, nws tuaj yeem cuam tshuam qhov tshwm sim ntawm qhov tshwm sim ntawm tus kheej annealing. Qhov sib ntxiv ntawm manganese tsis cuam tshuam rau microstructure ntawm txhuas bronze
cuam tshuam loj.
3. Lub luag haujlwm tseem ceeb ntawm npib tsib xee yog txhawm rau txhim kho cov khoom siv kho tshuab, thermal zog thiab corrosion kuj ntawm cov alloy. Nickel feem ntau yog ntxiv rau txhuas-hlau bronze, thiab dhau li ntawd tau yaj mus rau hauv cov kua (thiab ), nws tuaj yeem tsim K theem.
Cov theem yog Ni-Fe-Al compound nrog rau lub cev-centered cubic lattice, thiab cov qauv zoo ib yam li NiAl thiab FeAl. Cov ntsiab lus thiab kev sib nrig sib piv ntawm txhuas, hlau thiab npib tsib xee hauv cov hlau, nrog rau kev kho cua sov ntawm cov hlau
Ob leeg cuam tshuam rau K theem nag lossis daus morphology thiab alloy khoom. Thaum cov ntsiab lus npib tsib xee ntau dua cov ntsiab lus hlau, K theem yog nyob rau hauv daim ntawv ntawm lamellar nplooj, thiab thaum cov ntsiab lus nickel tsawg dua cov ntsiab lus hlau, K theem yuav raug precipitated nyob rau hauv daim ntawv ntawm cov blocks. Tsuas yog thaum muaj hlau thiab npib tsib xee
Thaum cov nyiaj sib npaug sib npaug, K theem yog precipitated hauv cov nplej zoo, uas muaj txiaj ntsig zoo rau cov khoom siv ntawm cov hlau.
4. Cov qauv ntawm txhuas bronze yog ib qho yooj yim los txheeb xyuas. Feem ntau, nws tuaj yeem corroded los ntawm reagents xws li ferric chloride hydrochloric acid aqueous tov los yog ferric chloride hydrochloric acid cawv kua. Cov theem yog dawb thiab ci, thiab theem (los yog eutectoid) yog
grey. Cov theem uas muaj hlau yog ci grey hais, yog tias nws yog me me, nws nyuaj rau kev paub qhov txawv. K theem kuj ci grey. Lub koom haum tsim los ntawm kev sib tshuam ntawm martensite muaj cov yam ntxwv zoo li rab koob.