[1]舒光冀,施恩.蠕墨铸铁中各种石墨形貌分析及其形成原因的探讨[J].东南大学学报(自然科学版),1982,12(3):97-127.[doi:10.3969/j.issn.1001-0505.1982.03.007]
 Shu Guang-ji,and Shi En.The Morphology and Formation of Graphite in Vermicular Graphite Cast Iron[J].Journal of Southeast University (Natural Science Edition),1982,12(3):97-127.[doi:10.3969/j.issn.1001-0505.1982.03.007]
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蠕墨铸铁中各种石墨形貌分析及其形成原因的探讨()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
12
期数:
1982年第3期
页码:
97-127
栏目:
本刊信息
出版日期:
1982-09-20

文章信息/Info

Title:
The Morphology and Formation of Graphite in Vermicular Graphite Cast Iron
作者:
舒光冀施恩
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Author(s):
Shu Guang-ji and Shi En
关键词:
石墨微晶 蠕虫状石墨 形成原因 蠕墨铸铁 石墨球 球状石墨 试样 扫描电镜 蠕化率 形貌
分类号:
+
DOI:
10.3969/j.issn.1001-0505.1982.03.007
摘要:
作者用光学显微镜和扫描电子显微镜观察了经化学深腐蚀和热氧化腐蚀的试样,研究了经不同蠕化剂处理但蠕化率相近的蠕铁以及用同一种蠕化剂(RE-Mg·Ti)处理但蠕化率不同的铸铁中各类石墨的形貌。结果表明,各种石墨形貌之间有内在联系。随着蠕虫状石墨含量的减少,蠕虫状石墨逐渐由卷筒状转变为层迭形和螺旋形而球状石墨则逐渐由蟹形转变为开花形、花瓣形和圆整球形。作者还用扫描电镜和X射线能量色谱仪研完了蠕虫状石墨铸铁内Mg、Ce、Ca、Al、Ti、S、Si等元素的分布: 根据实验结果和近代结晶理论作者提出,石墨晶体的各向异性和石墨——铁水界面的不稳定性是探讨各种石墨生长机理必须考虑的问题。
Abstract:
The morphology of graphite in vermicular graphife cast irons treated with different modifieators and resulted in nearly the same vermicular graphite content as well-as that in the irons treated with same modificator but resulted in various vermicular graphite content were studied by using optical microscope and scanning electron microscope with the specimens being deep-etched or hotetched. The investigation shows that there exists internal relationship between graphite shapes in VG Cast irons and as VG content decreases, the VG shapes change from scroll-like, laminar to sprial and the nodular graphite from crablike, exploded, petaloid to spheroidal successively. The distribution of Mg, Ce, Ca, Ti, Al, S etc. in VG cast irons was studied with SEM and energy dispersive X-ray mieroanalyzer. Based on the experimental results and the latect development of the theory of crystallization the authors suggest that the anisotropy of graphite crystal and the morphological instability of graphite-iron melt interface are fundamental aspects having to be considered in approaching the growth mechanism of various shapes of graphite.
更新日期/Last Update: 2013-05-01