Siab -Tsuas Softening yam ntxwv thiab forging tswj ntawm titanium alloys

High - kub softening yog lub hauv paus ntawm lub cev txoj cai ntawm titanium alloy forging. Qhov kub nce ntxiv ua rau muaj zog atomic thermal zog thiab txo qhov kev cuam tshuam ntawm kev ua haujlwm, ua rau poob qis hauv cov khoom siv zog thiab deformation tsis kam. Qhov no yog lub hauv paus rau kev tsim cov yastitanium alloysTxawm li cas los xij, nws tseem yuav ua rau cov txheej txheem teeb meem xws li cov nplej coarsening, kev ua haujlwm tsis sib xws, thiab tsim cov teeb meem.

 

 

1. Lub cev mos

Qhov kub siab ua rau lub lattice atomic vibration thiab tsis muaj zog atomic bonding, markedly txo qhov tsis kam mus rau dislocation motion. Titanium alloys muaj siab deformation kuj nyob rau hauv chav tsev kub, khaws ntau tshaj 65% ntawm lawv lub zog ntawm 400 degree, thiab poob sai tshaj 600 degree. Nyob rau theem no, kev ntxhov siab ntws tsis tu ncua nrog kub nce, ua raws li txoj cai ntawm cov hlau.

 

2. Theem Transformation Softening

+ ob- theem cheeb tsam: Deformation yog dominated los ntawm -theem plam thiab -theem kev sib koom ua ke deformation, nrog softening nrog los ntawm dynamic rov qab qhov twg dislocations rearrange tab sis tsis tuaj yeem tshem tawm tag nrho hardening.

 

ib zaug -theem cheeb tsam: Zoo plasticity thiab tsis tshua muaj deformation tsis kam, tab sis cov nplej yog nquag coarsening, ua rau muaj kev poob qis hauv lub zog thiab toughness ntawm forgings.

 

Nyob ze -theem- thaj chaw hloov pauv: Optimal softening thiab plasticity cuam tshuam, haum rau precision forging, tab sis nrog ib tug nqaim txheej txheem tswj qhov rais.

 

3. Dynamic Softening

Dynamic rov qab: Feem ntau tshwm sim ntawm qhov nruab nrab - qhov kub thiab txias siab. Dislocations rearrange ntawm plam thiab nce, nrog txwv softening nyhuv thiab residual ua hauj lwm hardening.

 

Dynamic recrystallization: Feem ntau tshwm sim ntawm qhov kub thiab txias thiab qis qis. Cov nplej tshiab nucleate thiab loj hlob, tag nrho tshem tawm hardening thiab refining microstructure. Piv txwv li, thaum Gr5 yog deformed ntawm 920-950℃thiab 0.01s⁻¹, dynamic recrystallization yog txaus, thiab nplej yuav refined rau 5-10μm.

 

Superplastic softening: Nyob rau hauv qhov kub thiab txias tsis tshua muaj siab, deformation yog dominated los ntawm grain ciam zawv zawg, nrog elongation tshaj 1000%, haum rau tsim complex precision Cheebtsam.

 

 

1. Kev lag luam Ntshiab Titanium

Cov yam ntxwv ntawm softening: Kev ua haujlwm ruaj khov hauv qab 300 degree, txo lub zog nrawm dua li 350 degree, thiab deformation tsis kam ntawm 600℃tsuas yog 1/5 ntawm qhov kub ntawm chav tsev.

 

Cov ntsiab lus txheej txheem: Forging kub 800-900 degree, tiv thaiv siab -kub oxidation yuav tsum tau; zoo formability, haum rau qhib tuag forging thiab pa kaw tuag forging.

 

2. + Hom

Cov yam ntxwv ntawm softening: Feem ntau siv, siab zog ntawm 400-500 degree, pom tseeb softening saum 600 degree, thiab theem transformation kub T txog 980-1020 degree.

 

Qhov sib txawv tseem ceeb:

Forging nyob rau hauv + cheeb tsam: Tsim ib tug duplex microstructure nrog sib npaug lub zog- toughness thiab optimal fatigue kev ua tau zoo.

Forging nyob rau hauv cheeb tsam: Yooj yim rau grain coarsening thiab txo qis qaug zog lub neej, tsuas yog siv rau loj - qhov loj me.

 

3. Nyob ze - Hom Siab -Tsub

Cov yam ntxwv ntawm softening: Muaj cov khoom xws li Sn, Zr, Si, muaj zog softening kuj ntawm 600-650℃thiab zoo heev creep zog.

Cov ntsiab lus txheej txheem: Forging kub 950-1000 degree, tswj theem kev faib ua feem qis dua 30% kom ntseeg tau siab - kub stability.

 

4. Hom

Cov yam ntxwv ntawm softening: Cov ntsiab lus siab ntawm Mo thiab V, theem siab hloov pauv kub, tsis tshua muaj siab - kub deformation kuj, thiab zoo hardenability.

 

Cov ntsiab lus txheej txheem: Txais cheeb tsam forging, tsis tshua muaj strain npaum li cas los txhawb dynamic recrystallization, thiab zam tsis sib npaug theem los nag.

 

 

1. Forging kub

Qhov kub thiab txias: Pa forging hauv + cheeb tsam; precision/isothermal forging nyob ze -theem- hloov pauv cheeb tsam; forging tsuas yog rau loj blank cogging, ua raws li + cheeb tsam tiav forging.

 

Kev tswj qhov kub thiab txias: cua sov hauv lub tshuab nqus tsev / cua sov, tswj kub ± 5 degree, tuav rau 1-2h; kub hloov pauv ntawm tuag thiab billet nyob rau hauv isothermal forging ± 5 degree, kub poob hauv pa forging tsis tshaj 50 degree; qhov kawg forging kub siab tshaj los yog sib npaug rau 850℃los tiv thaiv kev tawg.

 

2. Tus nqi deformation

Tus nqi qis: Rau isothermal / superplastic forging, uniform microstructure, haum rau aerospace precision qhov chaw.

Tus nqi nruab nrab: Rau cov pa kaw tuag forging, ntsuas qhov ua tau zoo thiab zoo.

Tus nqi siab: Tsuas yog rau qhov yooj yim, nws yuav ua rau overheating, coarse nplej, thiab tawg.

 

3. Deformation Degree thiab hom

Deformation tus nqi: Ib zaug dhau 40-60%, tag nrho deformation Ntau dua lossis sib npaug li 70% txhawm rau kho microstructure.

Deformation hom: Isothermal forging nrog siab precision; multi-kev taw qhia forging los txhim kho isotropy; radial forging haum rau qhov ntev ncej.

 

4. High -Kev Tiv Thaiv Kub

Nqus / argon tiv thaiv, cov ntsiab lus oxygen<10ppm;

Siv cov txheej tiv thaiv kom txo kev sib txhuam thiab oxidation tsis kam;

Txo kom siab -kub tuav lub sijhawm thiab ua haujlwm tsis tu ncua.

 

5. Tuag thiab khoom siv

Tuag: Molybdenum/nickel-raws li tuag rau isothermal forging, preheated rau ntau tshaj 80% ntawm billet kub, tuag kho thaum hnav tshaj 0.2 hli.

Khoom siv: Txais servo hydraulic xovxwm nrog infrared ntsuas kub kaw - voj ntsuas kub.

 

6. Digital Simulation

Siv DEFORM, ABAQUS los simulate qhov sib txawv ntawm thaj chaw thiab microstructure evolution, txo cov seem seem los ntawm 20% thiab txhim kho microstructure uniformity los ntawm 30%.

 

 

Ruihang yog lub tuam txhab thev naus laus zis thiab kev tsim kho tshiab uas koom ua ke R & D, ntau lawm thiab muag khoom rau hauv ib qho kev sib koom ua ke.Yog tias koj muaj kev yuav khoom ntawm tes, xav tiv tauj peb:Sam.Rui@bjrh-titanium.com.