Kukanda munzvimbo inokotama kana kutwasuka kunokonzeresa dambudziko rekutsemuka kwemupendero panguva yekuchinja kwekunhonga.pombi isina musono.
0Cr15mm9Cu2nin uye 0Cr17Mm6ni4Cu2N simbi isina simbi ndeye mazana maviri akatevedzana austenitic simbi isina tsvina, iyo yakasiyana neyechinyakare mazana maviri akatevedzana uye mazana matatu akatevedzana austenitic.simbi isina ngura. Rudzi urwu200simbi isina tsvina square chubhuinowanzoitika kumucheto kutsemuka, kutsemuka kwepamusoro, Dambudziko rekushaya kuumbwa kwemhando yekukuvara kwemupendero. Mukugadzirwa chaiko kunopisa, mhando mbiri dzesimbi dzinotora mazana maviri akatevedzana ekudziya macurves, uye tembiricha yechoto inodzorwa pa1215-1230C. Yayo inopisa sisitimu inoshandisa yechipiri-chikamu komputa modhi "Rough Rolling Regulations" uye "Pedzisa Rolling Regulations". 800-1020C. Zvichireva kune chaiyo inopisa yekukungurutsa maitiro maviri ekunhongapombi isina musono, gadzira yekudziya sisitimu uye deformation tembiricha yeiyi nzira yekuyedza, uye wobva waita yakateedzerwa inopisa yekutenderedza bvunzo pane inopisa yekutenderedza bvunzo mudziyo wakagadzirwa uye wakagadzirwa isu pachedu. Ruzivo rwanhasi rwesquare pombi kusangana: kushandisa AOD+LF yekunatsa maitiro kugadzira 0Cr15Mm9Cu2Nn uye 0Cr17I6ni4Cu2N pickling isiri-vascular inoenderera ichikandira yakaipa inoenderera ichikanda kuburikidza yakatwasuka bending inoenderera kukanda maitiro, iyo muchinjika-chikamu saizi yekuramba ichikanda yakaipa12600m. Chikamu chikuru % chinoratidzwa mutafura. Iyo microstructure yegomba rakashata pakadzika kwakasiyana kwe0Cr15m9Cu2Nn acid-yakashambidzwa isina-vascular inoenderera kukanda, sezvakaratidzwa mumufananidzo, inoenderana nekudzika kwegomba rakashata rakakandwa. Kana mamiriro asina kujairika aitika uye tembiricha yemupendero wekukanda inotadza kudonha kune yakaderera-tembiricha brittle range. Iyo microstructure pa15 uye 25m. Chimiro che microstructure uye kukura kwezviyo zve 20g high-pressure boiler tube ichawedzera nekudzika kwegomba re slab. Shanduko, asi ratidza musiyano. Pagoko rakadzika d0m, iyo microstructure inonyanya kuve skeleton-mhando dendrite chimiro, uye yekutanga uye yechipiri dendrite spacing idiki. Pa d5mm, inonyanya kuve dendrite chimiro.
Dendrite spacing yakakura. Pa d> 15mn, madendrites akafanana nehonye, asi pa d25m, anonyanya kuve makristasi emasero. Iyo microstructure yeCr17Im6ni4Cu2N square chubhu inoenderera mberi ichikanda slab muFig. 1 inoratidza kuti iyo inoenderera ichikanda goko rakashata inongova dendrite chimiro. Kunyangwe paine mimwe misiyano mudendrite morphology, chimiro chayo chinonyanya kuumbwa negrey austenite matrix, uye black ferrite. Kufanana ne0Cr15Mn9Cu2Nin square chubhu, sezvo kudzika kwegoko kunowedzera, iyo yekutanga uye yechipiri dendrite spacing inowedzera zvishoma nezvishoma, uye chimiro chedendrite chinoshanduka kubva skeleton kuenda kuhonye. , maitiro epurasitiki mukuita kwemartensitic phase shanduko mukupfeka-resistant composite simbi pombi yakaongororwa nekuyedza, uye saizi yezviyo yeaustenite uye mutemo wayo wekukura kwezviyo austenite, kutaridzika kwemartensite, chikamu chekushandura plasticity, Mhedzisiro yekushushikana uye morphology pane zvemagetsi zvinhu. yepombi dzesimbi dzisingapfeki. Pasi pemamiriro ekupisa 1010 austenitization 15mir, yekutanga tembiricha nzvimbo s uye yekupedzisira tembiricha nzvimbo ㎡ yemartensitic shanduko inowedzera nekuwedzera kweaustenitization tembiricha, uye maparamendi ari muchikamu chekushandura epurasitiki modhi yekupfeka-inodzivirira composite simbi pombi shanduko nekuwedzera ne kuwedzera kushushikana kwakaenzana. Kana tembiricha ye austenitization yakadzikira kupfuura 1050C, kukura kwezviyo kunoratidza yakajairika kukura maitiro. Nekuwedzera kwenguva ye austenitization, iyo yakatenderedza simbi inowedzera. -3500 thermal simulator, maitiro epurasitiki ekupfeka-resistant composite simbi pombi panguva yemartensitic shanduko yakaongororwa, uye saizi yezviyo yeaustenite uye mutemo wayo wekukura kwezviyo zve austenite zvakadzidzwa, uye martensite Mhedzisiro yekutarisisa, chikamu chekushandura plasticity, kushushikana uye morphology pane zvemakanika zvinhu zvekupfeka-resistant composite simbi mapaipi. Pasi pemamiriro e1010 austenitization kwemaminetsi gumi nemashanu, yekutanga tembiricha nzvimbo s uye yekupedzisira tembiricha nzvimbo ㎡ yemartensitic shanduko inowedzera nekuwedzera kweaustenitization tembiricha, uye paramende K muchikamu chekushandura plasticity modhi yekupfeka-inodzivirira composite simbi pombi inowedzera kushushikana kwakaenzana. Kana iyo austenitizing tembiricha yakadzikira kupfuura 1050C, kukura kwezviyo kunoratidza yakajairika kukura maitiro. Sezvo iyo austenitizing nguva inowedzera, Inowedzera, uye iyo B-chikamu shanduko inokamurwa kuita miganhu yezviyo. Iko nucleation uye kukura kwezvikamu uye Kune matanho maviri e nucleation uye kukura kweWidmanite a. phase. Kana kutonhora kunowedzera kubva ku0.1C / s kusvika ku150C / s, chirongwa chekushandura chikamu cheB + a uye + chinonyanya kuitika muTi-55 alloy. Mbeu dziri mupombi yesimbi isingapfekeki inogona kuramba yakaenzana uye idiki, uye martensite Fine coherent complex carbides yakanaya pamusoro. Kushandisa transmission electron microscope, scanning electron microscope, x-ray diffractometer uye electrochemical nzira yekudzidza microstructure uye electrochemical zvimiro zvekupfeka-resistant simbi pombi alloys munzvimbo dzakasiyana senge cast state, homogenized state, uye mota mamiriro, uye erekitironi probe EPM The morphology uye kuumbwa kweiyo huru precipitates mukupfeka-inodzivirira simbi pombi yakavharirwa pa150-300C yakaongororwa nekuongorora kwesimba.
Nguva yekutumira: Mar-30-2023