Nekukurumidza kukura kwehupfumi hwevanhu, nzvimbo yakakura yegungwa uye zviwanikwa zvegungwa zvakapfuma zvakatanga kupinda munharaunda yevanhu yekuona.Gungwa ihombe repfuma imba, yakapfuma muzviwanikwa zvipenyu, zviwanikwa zvesimba uye zviwanikwa zvegungwa simba.Kuvandudzwa uye kushandiswa kwezviwanikwa zvemugungwa hazviparadzaniswe kubva mukutsvagisa nekuvandudzwa kwezvinhu zvakakosha zvemugungwa, uye kupokana nekupfeka munzvimbo dzakaoma dzemugungwa inyaya dzakakosha dzinorambidza kushandiswa kwezvinhu zvemugungwa uye kugadzirwa kwemidziyo yemugungwa.Dzidza kukora uye kupfeka maitiro e316L uye 2205 simbi isina tsvina pasi pemamiriro maviri anowanzo shandiswa emvura yegungwa: yegungwa corrosion kupfeka uye cathodic dziviriro, uye shandisa nzira dzakasiyana dzekuyedza dzakadai seXRD, metallography, electrochemical test uye corrosion uye kupfeka synergy kuongorora iyo microstructure. shanduko yechikamu Kubva pakona, mabatiro emvura yegungwa anotsvedza anopfeka pakuora uye kupfeka zvinhu zvesimbi isina tsvina inoongororwa.
(1) Chiyero chekupfeka che316L pasi pemutoro mukuru idiki pane yekupfeka chiyero pasi pemutoro wakaderera.XRD uye metallographic ongororo inoratidza kuti 316L inopinda martensitic shanduko panguva yekutsvedza kwemvura yegungwa, uye kushanda kwayo kwekushandura kunenge 60% kana kupfuura;Kuenzanisa martensite shanduko yemazinga pasi pemamiriro maviri emvura yegungwa, zvakaonekwa kuti kuparara kwemvura yegungwa kunotadzisa shanduko yemartensite.
(2) Potentiodynamic polarization scanning uye electrochemical impedance nzira dzakashandiswa kudzidza pesvedzero ye316L microstructural shanduko pane corrosion maitiro.Mhedzisiro yakaratidza kuti martensitic phase shanduko yakakanganisa maitiro uye kugadzikana kweiyo passive firimu pamusoro pesimbi isina tsvina, zvichitungamira mukuora kwesimbi isina tsvina.Kupokana necorrosion kwakadzikira;electrochemical impedance (EIS) ongororo yakasvikawo pamhedzisiro yakafanana, uye iyo yakagadzirwa martensite uye isina kushandurwa austenite fomu microscopic yemagetsi coupling, iyo inozoshandura maitiro emagetsi esimbi isina tsvina.
(3) Kurasikirwa kwezvinhu zve316L simbi isina tsvinapasi pemvura yegungwa kunosanganisira kukwesha kwakachena uye kurasikirwa kwezvinhu (W0), iyo synergistic mhedzisiro yekuora pakupfeka (S') uye synergistic mhedzisiro yekupfeka pakuora (S'), nepo martensitic chikamu shanduko inokanganisa Hukama huri pakati pekurasikirwa kwezvinhu. chikamu chimwe nechimwe chinotsanangurwa.
(4) Kuora uye kupfeka maitiro e2205dual-phase simbi pasi pemamiriro maviri emvura yegungwa yakadzidzwa.Mhedzisiro yacho yakaratidza kuti: chiyero chekupfeka che2205 dual-phase simbi pasi pemutoro wakakwirira chaive chidiki, uye mvura yegungwa inotsvedza kupfeka yakakonzera kuti σ phase iitike pamusoro peiyo dual-phase simbi.Microstructural shanduko dzakadai se deformations, dislocations uye lattice shifts inovandudza kupfeka kupikisa kwe-dual-phase steel;kana zvichienzaniswa ne316L, 2205 dual-phase simbi ine diki kupfeka mwero uye nani kupfeka kuramba.
(5) Nzvimbo yekushanda yemagetsi yakashandiswa kuyedza maitiro emagetsi ekupfeka pamusoro pesimbi mbiri-chikamu.Mushure mekutsvedza kupfeka mumvura yegungwa, iyo yekuzvigadzirisa inogona kuita2205dual-phase simbi yakaderera uye ikozvino density yakawedzera;kubva ku electrochemical impedance test method (EIS) yakagumisawo kuti kupikisa kukosha kwekupfeka pamusoro peduplex simbi kunoderera uye kudzivirira kwemvura yegungwa kunopera simba;iyo σ chikamu chinogadzirwa nekutsvedza kwesimbi ye duplex simbi nemvura yegungwa inoderedza Cr uye Mo zvinhu zvakatenderedza ferrite uye austenite, zvichiita kuti duplex simbi iwedzere kubatwa nekuora kwemvura yegungwa, uye makomba egomba zvakare anowanzo kuumbwa munzvimbo idzi dzisina kukwana.
(6) Kurasikirwa kwezvinhu zve2205 duplex simbikunyanya kunobva mukukweshana uye kupfeka kurasikirwa kwezvinhu, zvichiverengera nezve 80% kusvika 90% yekurasikirwa kwese.Kuenzaniswa ne316L simbi isina tsvina, kurasikirwa kwezvinhu kwechikamu chimwe nechimwe cheduplex simbi yakakura kupfuura iyo ye316L.Diki.
Muchidimbu, zvinogona kugumiswa kuti 2205 dual-phase simbi ine zvirinani kusakara mumhepo yemvura yegungwa uye inonyanya kukodzera kushandiswa mumvura yegungwa uye kupfeka nharaunda.
Nguva yekutumira: Zvita-04-2023