金属学报  1986, Vol. 22 Issue (6): 120-153

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定向凝固条件下Fe-C-Si合金石墨组织转变的研究

于敞;王务献;丁少兰;吴学明;徐昭华;厉松春

上海交通大学;上海交通大学;上海交通大学;上海交通大学;上海交通大学;上海交通大学

CONDITIONS OF STRUCTURAL TRANSFORMATION OF GRAPHITE IN Fe-C-Si ALLOY UNDER UNIDIRECTIONAL SOLIDIFICATION

by YU Chang; WANG Wuxian: DING Shaolan; WU Xueming; XU Zhaohua; LI Songchun (Shanghai Jiaotong University)

于敞;王务献;丁少兰;吴学明;徐昭华;厉松春. 定向凝固条件下Fe-C-Si合金石墨组织转变的研究[J]. 金属学报, 1986, 22(6): 120-153.
, , , , , . CONDITIONS OF STRUCTURAL TRANSFORMATION OF GRAPHITE IN Fe-C-Si ALLOY UNDER UNIDIRECTIONAL SOLIDIFICATION[J]. Acta Metall Sin, 1986, 22(6): 120-153.

摘要 参考文献 相关文章 Metrics 全文: PDF(3408 KB)   摘要: 研究了Fe-C-Si合金中Ce量及凝固速度对石墨晶体形态转变的影响,首次提出了在球团状石墨与过冷石墨的转变或者蠕虫状石墨与片状石墨的转变过程中,以变质元素的含量变化为主要影响因素,并且以Ce_(D←→D)=0.0296lgR+0.162(％)及Ce(V←→A)=-0.0353lgR+0.147(％)为各自的临界加入量值.在球团状石墨与蠕虫状石墨的转变过程中,凝固速度的变化占主导地位,且以Rs=55×10~(-2.5Ce)(μm/S)和Rv=32.4×10~(-2.3Ce)(μm/S)为获得完全球团状或蠕虫状石墨的临界值。 蠕虫状石墨能与片状石墨间相互连续生长过渡,认为蠕虫状石墨为一定变质元素含量及凝固速度条件下石墨晶体特有的组织形态,无须球化衰退或石墨球破碎为其生长前提。 Abstract：An investigation was made of the influence of modifying element Ce and of solidification rate on the structural transformation of graphite in the Fe-C-Si alloy. It is proposed that during the transformation between spheroidal and overcooled graphite or between vermicular and flake ones, the modifying element Ce added may be the main effective factor, and the critical wt-% of Ce addition for each transformation may be expressed as Ce_((S-D))=-0.0296 1g R+0.162 and Ce_((V-A))=-0.0353 1g R+0.147 respectively. The solidification rate seems to be predominant while the transformation between spheroidal and vermicular graphite, and the critical rate in μm/s to complete the spheroidal or vermicular graphite transformation may be R_s=55×10~(-2.5Ce) or R_v=32.4×10~(-2.3Ce) respectively. It is confirmed that the structural transformation between vermicular and flake graphite may be carried out continuously during the growth of graphite crystals. The graphite of vermicular structure is a special one which is growing up under certain conditions of modifying element Ce and solidification rate with no need to decay the nodularization or to break the graphite nodules prior to its growth. 收稿日期: 1986-06-18      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 于敞 王务献 丁少兰 吴学明 徐昭华 厉松春 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1986/V22/I6/120 1 Cole, G.S., Trans. Am. Foundrymen's Soc., 80 (1972) , 335． 2 Stefanesu, D.M.; Loper, C.R., Trans. Am. Foundrymen's Soc., 89 (1981) , 425． 3 Baeckerud, L.; Nilsson, K.; Steen, H., The Metallurgy of Cast Iron, Eds. Lux, B.; Minkoff, Ⅰ.; Mollard, F., Geneva, Switzerland, 1974, 625． 4 Su, J.Y.; Chow, C.T.; Wallace, J.F., Trans. Am Foundrymen's, Soc, 90 (1982) , 565． 5 Fidos, H., Int. Cast Met, J., 5 (1980) , №1, 23． 6 Nieswaag. H.; Zuithoff, A.J., AFS Cast Met. Res. J., 11 (1975) , № 3, 85． 7 Strizik, P.; Jeglitsch, F., Int. Cast Met. J., 1 (1976) , № 3, 23． 8 Mayer, H., Int. Cast Met. J., 1 (1976) , № 4, 21． 9 Sofroni, L.; Riposon, Ⅰ.; Chira, Ⅰ., The Metallurgy of Cast Iron, Eds. Lux, B; Minkoff, Ⅰ.; Mollard, F., Geneva, Switzerland, 1974, p. 179． 10 Geilenberg, H.; Lange, B., The Metallurgy of Cast Iron, Eds. Lux, B; Minkoff, Ⅰ; Mollard, F., Geneva, Switzerland, 1974, P. 529． No related articles found! Viewed Full text Abstract Cited   Shared      Discussed