2Cr12Ni4Mo3VNbN钢的冲击性能
Impact Property of 2Cr12Ni4Mo3VNbN Steel
李晓婷 1李宗科 1门若男 1刘新权1
作者信息
- 1. 无锡透平叶片有限公司,江苏 无锡 214174
- 折叠
摘要
将不同炉次的2Cr12Ni4Mo3VNbN钢锭锻造成φ220 mm棒材.对棒材进行1 050℃ 保温1h油淬、560℃ 回火2h空冷和540℃ 回火2h空冷.棒材的冲击试验表明,钢锭顶部和底部锻制的棒材冲击性能差异较大.为此,检测了由两炉次钢锭锻制的 2Cr12Ni4Mo3VNbN钢棒材的冲击韧度、冲击断口形貌、化学成分、显微组织和析出相成分.结果表明:钢锭顶部和底部锻制的2Cr12Ni4Mo3VNbN钢棒材中一次MX 型析出相的含量和分布不同,从而导致其冲击性能差异较大.
Abstract
Different heats of 2Cr12Ni4Mo3VNbN steel ingots were forged into bars 220 mm in diameter.The bars were oil quenched from 1 050℃,first tempered at 560℃ for 2 h and air cooled,and secondly tempered at 540℃ for 2 h and air cooled.From impact test for the bars it was seen that the bars forged from top and bottom of the ingots exhibited more significant difference in impact property.For this reason,2Cr12Ni4Mo3VNbN steel bars forged from two heats of ingots were tested for impact toughness,pattern of impact fracture,chemical composition,microstructure and composition of precipitated phase.The results showed that the 2Cr12Ni4Mo3VNbN steel bars forged from top and bottom of the ingot differed in amount and distribution of primary MX type precipitated phase,thus resulting in more significant difference in their impact property.
关键词
2Cr12Ni4Mo3VNbN钢/冲击性能/一次析出相/断口/显微组织Key words
2Cr12Ni4Mo3VNbN steel/impact property/primary precipitated phase/fracture/microstructure引用本文复制引用
出版年
2024
NETL
NSTL
万方数据