金属学报  1981, Vol. 17 Issue (2): 148-247

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55SiMnMo钢的上贝氏体形态

刘正义;黄振宗;林鼎文

华南工学院;华南工学院;华侨大学

MORPHOLOGY OF UPPER BAINITE IN A 55SiMnMo STEEL

Liu Zhengyi and Huang Zhengzong (South China Institute of Technology)and Lin Dingwen (Huaqiao University)

刘正义;黄振宗;林鼎文. 55SiMnMo钢的上贝氏体形态[J]. 金属学报, 1981, 17(2): 148-247.
, , . MORPHOLOGY OF UPPER BAINITE IN A 55SiMnMo STEEL[J]. Acta Metall Sin, 1981, 17(2): 148-247.

摘要 参考文献 相关文章 Metrics 全文: PDF(2417 KB)   摘要: 本文通过光学显微镜、X射线衍射、电子显微镜(透射和扫描电镜)、紧凑拉伸等试验方法研究了55SiMnMo钢在正火状态下的上贝氏体形态,回火转变以及对其机械性能的影响。 该钢经900℃,0.5h奥氏体化后空冷所出现的上贝氏体形态由铁素体和30—35％富碳奥氏体片层相间组成。未发现有碳化物存在。 这种形态的上贝氏体会发生回火转变,析出碳化物的回火转变温度约为400℃,此时金相组织变为由铁素体、碳化物和3—5％奥氏体组成,作者暂称这种组织为回火贝氏体。在发生回火转变时,裂纹扩展速率(da/dN)随回火温度增加而增加,在400℃时达最大值;断口的扫描电子金相从准解理型过渡到解理型。 Abstract：The morphology of upper bainite in a 55SiMnMo steel under normalized condition as well as its transformation in tempering has been observed by optical microscopy, TEM, SEM and X-ray diffraction. After austenitising at 900℃ for 1/2h and A. C., the upper bainite resulted was composed of ferrite and 30—35% carbon enriched austenite platelet, however, no carbide appeared until tempering treatment. The tempering temperature for carbide precipitation was found to be 400℃, and the tempering products, so called "tempered bainite", consist of ferrite, carbide and 3—5% austenite. The rate of crack propagation da/dN of the steel increases with the increase of tempering temperature and reaches its maximum at about 400℃, accompanied with relevant change of fracture type from the quasicleavage to the cleavage. 收稿日期: 1981-02-18      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 刘正义 黄振宗 林鼎文 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1981/V17/I2/148 [1] 柯俊,1954年金属研究工作报告会会刊,第五册:金属物理及检验,p.81． [2] Hehemann, R. E., Phase Transformation, ASM, Metals Park, Ohio, 1970, p. 397． [3] Kunitake, T., Terasaki, F., Ohmori, Y. and Ohtani, H., Iron Steel, 45 (1972) , 647． [4] 邦武立郎,热处理,12(1972) ,94． [5] Biss, V. and Cryderman, R. L., Met. Trans., 2 (1971) , 2267． [6] 北京钢铁研究院、新抚钢厂,新钢技术情报,1977,№ 1,p.1． [7] Le Houillier, A., Begin, G. and Dube, A., Met. Trans., 2 (1971) , 2645． [8] Taylor, A., X-Ray Metallography, Wiley, New York, 1961, p. 525． [9] Parker, E. R., Met. Trans., 8A (1977) , 1025．q No related articles found! Viewed Full text Abstract Cited   Shared      Discussed