Yuav Ua Li Cas Npaj Cov Khoom Uas Ua Tau Zoo -Cov Qauv Ua Tau Zoo Thaum Kub Kub

Tus yuam sij rau kev npaj cov ntaub ntawv kom tswj tau cov qauv zoo ntawm qhov kub thiab txias yog los qhia cov txheej txheem zoo thib ob ntawm cov atoms rau pin cov ciam teb. Kev ua haujlwm thiab kev kho cua sov yuav tsum tau tswj xyuas kom tsis txhob muaj qhov tsis zoo ntawm cov qoob loo loj hlob thaum lub sijhawm ua haujlwm kub.

1. Metallurgical thiab Compositional Design: Qhia Microalloying Elements

Ti, Nb, V, Al: Ntxiv cov ntsiab lus no thaum smelting tsim cov carbide ruaj khov (xws li TiC, NbC, VC) lossis nitrides (xws li, AlN) uas precipitate thaum solidification thiab cua sov, anchoring grain ciam teb.

W, Mo: Txhim kho liab hardness thiab temper softening kuj ntawm hlau. Lawv muaj cov carbide ruaj khov ntawm qhov kub thiab txias uas tiv thaiv cov ciam teb txav.

Tswv yim pom zoo: Siv microalloyed los yog ib txwm zoo zoo-grained steels, xws li H13+Ti thiab Al-Killed H13, muab cov ntsiab lus ntawm cov ntsiab lus tseem ceeb nyob rau hauv cov kev txwv (piv txwv li, Ti Ntau dua los yog sib npaug rau 0.015%, Al Ntau dua lossis sib npaug li 0.02%).

2. Cov txheej txheem hmoov hlau metallurgy: Tau txais ib qho Ultrafine Original Microstructure

PM-H13, ASP-23: Kev siv cov pa roj atomisation hmoov npaj + kub isostatic pressing (HIP) molding zam kev sib cais hauv cov tsoos ingots, thiab cov microstructure yog homogenous nrog cov thawj nplej loj ntawm 8-10.

Qhov zoo: Dispersed carbide dispersion, muaj zog isotropy thiab deb ntawm kev ua haujlwm zoo rau cov qoob loo loj dua li cov pa cam khwb cia thiab forged steel.

Daim ntaub ntawv: High precision txhaj pwm hauv kev kho mob thiab kho qhov muag daim ntaub ntawv, txhim kho lub neej qaug zog tshaj 30%.

3. Grain Size Refinement: Thermomechanical Processing Control

Tswj Rolling and Cooling (TMCP): Thaum lub sij hawm forging los yog dov, qhov kub ntawm deformation thiab txias tus nqi yog tswj, uas ua rau ntau deformations nyob rau hauv lub austenite cheeb tsam thiab txhawb dynamic recrystallisation thiab grain loj refinement.

Isothermal Annealing + Ceev Txias: Tsis txhob ua kom sov lub qhov cub qeeb qeeb, siv cua txias lossis cua txias, txo qhov ntev ntawm qhov siab - qhov kub thiab txias, inhibit grain aggregation thiab kev loj hlob.

Contraindications: Kev ua kom txias qeeb lossis ncua ntev ntawm qhov kub siab yog tsis tso cai kom tsis txhob rov qab ua kom rov ua dua tshiab uas ua rau muaj kev tsis sib haum xeeb.

4. Tsim Nto thiab Composite Structure (Leading-Edge Direction)

Ceramic Matrix Composites (CMCs): xws li SiC/SiC, Al2O3/ZrO2, uas tsis muaj teeb meem kev loj hlob, tuaj yeem ua haujlwm ntawm qhov kub siab tshaj 1400℃thiab tsim nyog li nozzle liners;

Hlau -Ceramic Composite Structures Siv cov ceramic cores los yog coatings nyob rau hauv ib tug hlau matrix rau kev txhim kho nyob rau hauv lub zos kub stability.