金属学报  1989, Vol. 25 Issue (1): 13-17

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9%Ni钢中沉淀奥氏体的形成过程及其在深冷下的表现

雷鸣;郭蕴宜

中国科学院金属研究所;中国科学院金属研究所;副研究员;沈阳

FORMATION OF PRECIPITATED AUSTENITE IN 9％ Ni STEEL AND ITS FUNCTION AT CRYOGENIC TEMPERATURE

LEI Ming;GUO Yunyi Institute of Metal Research; Academic Sinica; Shenyang

雷鸣;郭蕴宜. 9%Ni钢中沉淀奥氏体的形成过程及其在深冷下的表现[J]. 金属学报, 1989, 25(1): 13-17.
, . FORMATION OF PRECIPITATED AUSTENITE IN 9％ Ni STEEL AND ITS FUNCTION AT CRYOGENIC TEMPERATURE[J]. Acta Metall Sin, 1989, 25(1): 13-17.

摘要 参考文献 相关文章 Metrics 全文: PDF(1440 KB)   摘要: 研究了9％Ni钢在两相区温度保温时沉淀奥氏体的析出过程及其对低温冲击韧性的影响。结果表明:在两相区保温由于C,N及Ni的重新分布,形成富Ni,Mn及C,N的奥氏体富集区及相对纯化的铁素体富集区,两者呈深浅相间的条带状组织。中温转变的奥氏体冷却到室温时部分转变成马氏体。这种第二代马氏体与奥氏体高度细化,并交织在一起形成复杂的组织。而奥氏体中高度富集C,N及Ni,它在极低温度下仍很稳定。低温冲击断口的撕裂岭都是沉淀奥氏体密集的,它们沿撕裂方向拉长。说明细碎的马氏体与奥氏体交织的组织既保持一定的强度也提高了低温韧性,这同回转奥氏体吸收杂质纯化基体密切相关。 关键词 ： 9％Ni钢,  沉淀奥氏体低温韧性     Abstract：Streaks of austenite-rich and ferrite-rich bands produce during thesoaking at α+γ region because of the re-distribution of elements. Part of the aus-tenite formed at intermediate temperatures transforms into martensite while thesteel was cooled down to room temperature. The structure which consists of finemartensite and austenite exhibits a moderate strength and high enough cryogenictoughness. One of the important cause of the excellent cryogenic properties is thatthe precipitated austenite absorbs the impurities and thus purifies the matrix of thesteel. Key words： 9%Ni steel    precipitated austenite    cryogenic toughness 收稿日期: 1989-01-18      服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 雷鸣 郭蕴宜 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1989/V25/I1/13 1 张弗天,许义奎.能源材料通讯,1984;2(4) :58 2 张弗天、王景韫,郭蕴宜.金属学报,1984;20:A405 3 雷鸣.中国科学院金属研究所硕士论文,1985 4 宋建先,中国科学院金属研究所硕士论文,1983S No related articles found! Viewed Full text Abstract Cited   Shared      Discussed