Acta Metall Sin  1992, Vol. 28 Issue (1): 27-33    DOI:

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FRACTAL GEOMETRY STUDY OF CORRELATION BETWEEN IMPACT TOUGHNESS OF STEEL AND PARAMETERS OF FREE-CUTTING PHASE

JIANG Laizhu;CUI Kun Huazhong University of Science and Technology; Wuhan

JIANG Laizhu;CUI Kun Huazhong University of Science and Technology; Wuhan. FRACTAL GEOMETRY STUDY OF CORRELATION BETWEEN IMPACT TOUGHNESS OF STEEL AND PARAMETERS OF FREE-CUTTING PHASE. Acta Metall Sin, 1992, 28(1): 27-33.

Abstract References Related Articles Recommended Metrics Download:  PDF(533KB)  Export:  BibTeX | EndNote (RIS)       Abstract  Studies were made of the calculation of fractal dimension of transverse impact fracture surface, and of the correlation between impact toughness of steel and parameters of free-cutting phase by means of the developed fractal geometry model of crack propagation. It is believed that the area fraction f, of free--cutting phase is negligibly influential to the longitudinal impact toughness, as f《 1. While the configuration, saying ratio of length to width,of free--cutting phase is inversely ?nfluential to the transverse impact toughness. This may be the reason why the transverse impaot toughness of free--cutting steel containing more rare earth contrast to sulphur is even higher than the low sulphur base steel. Key words:  fractal geometry      impact toughness      free-cutting phase      Received:  18 January 1992      Service E-mail this article Add to citation manager E-mail Alert RSS （） Articles by authors URL:  https://www.ams.org.cn/EN/     OR     https://www.ams.org.cn/EN/Y1992/V28/I1/27 1 Pollard B. Met Technol. 1974; 1: 343 2 Bernard G, Grumbach M, Moliexe F. Met Technol, 1975, 2: 512 3 Austin D E, Goehler D D. Met Prog, 1963; 84(3) : 94 4 高田寿.金子晃司,井上毅,木下修司.铁钢,1976;62:866 5 谢和平,陈至达.力学学报,1988;20:264 6 Lung C W. In: Pietronero L, Tosatti E eds, Fractals in Physics, Oxford: North-Holland, 1986: 189 7 陈道伦,王中光,姜晓霞,艾素华,师昌绪.材料科学进展,1989;3:115 8 穆在勤,龙期威.金属学报,1988;24:A142 9 Mo Z Q (Mu Zaiqin), Lung C W (Long Qiwei). J Phy D: Appl Phys, 1988; 21: 343 10 苏辉,张玉贵,阎振綮.金属学报,1989;25:A466 11 孔飒,江自应.物理测试,1988;(4) :55 12 江来珠.Ca,RE对硫系易切削钢中易切削相的变性作用,华中理工大学博士学位论文,1990 13 肖纪美.金属的韧性及韧化,上海:上海科学技术出版社,1980:32 14 Baker T J, Charles J A. 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