2.25Cr-1Mo-0.25V钢研究进展与挑战

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Abstract：2.25Cr-1Mo-0.25Vstee，asthecore material forhigh-temperatureand high-pressurehydrogenservice equipmentsuch as hydrogenation reactors，hasgarnered significant research attention regarding itsweldability， elevated-temperature mechanical behavior，and hydrogen embritlement susceptibility.This paper reviews recent domestic and international research advancements in microstructural regulation of welded joints，optimization of high-temperature mechanical properties，and hydrogen embrittlement mitigation strategies for 2.25Cr-1Mo0.25V steel. Studies have revealed that two aspects have emerged as research priorities： the influence mechanisms of welding process parameters coupled with heat treatment schedules on carbide evolution and high-temperature mechanical properties in 2.25Cr -1Mo-0.25V steel， as well as the correlation between hydrogen trap distribution characteristics and hydrogen embritlement susceptibility in this material.Future research directions include elucidating material property degradation mechanisms under multi-field coupled service environments and establishing lifetime performance prediction models through microstructural regulation strategies.

Keywords： 2.25Cr-1Mo-0.25V steel; welding process; high-temperature creep; hydrogen embrittlement

1序言

2.25Cr-1Mo-0.25V钢因其优异的抗氢腐蚀性能和高温强度，已成为现代炼油装置与煤化工设备的关键结构材料[1]。（剩余13841字）