Acta Metall Sin  1991, Vol. 27 Issue (2): 1-7    DOI:

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PREFERENTIAL SITE SATURATION FOR NUCLEATION AND GROWTH OF α-PHASE AT EARLY STAGE OF AUSTENITE DECOMPOSITION IN LOW CARBON STEEL BEARING BORON

LIU Guoquan;LI Wenqing University of Science and Technology Beijing; HU Yongyi Tsinghua University; Beijing

LIU Guoquan;LI Wenqing University of Science and Technology Beijing; HU Yongyi Tsinghua University; Beijing. PREFERENTIAL SITE SATURATION FOR NUCLEATION AND GROWTH OF α-PHASE AT EARLY STAGE OF AUSTENITE DECOMPOSITION IN LOW CARBON STEEL BEARING BORON. Acta Metall Sin, 1991, 27(2): 1-7.

Abstract References Related Articles Recommended Metrics Download:  PDF(632KB)  Export:  BibTeX | EndNote (RIS)       Abstract  The microstructural evolution path at early stages of austenite decom-position at 620℃ in low carbon steels bearing boron has been investigated bymeans of stereological metbods and the concept of "extended structure". The resultsshow that the grain boundaries of austenite are still the preferential sites for nuc-leation and growth of α-phase in boron steels, with the edges and corners beingmore preferential than the surfaces. The site saturation at edges and corners alwaysoccurs earlier than that at surfaces. It has been also shown that the amount of ef-fective boron in steel has marked influence on the path to achieve the site satura-tion, and delays the surface site saturation. Key words:  phase transformation      microstructure      stereology      boron steel      Received:  18 February 1991      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/Y1991/V27/I2/1 1 Cahn J W. Acta Metall. 1956; 4: 449 2 梅本实,日村今男,日本金属学会会报,1985;24: 262 3 Kirkaldy J S, Aaronson H L In: Zackay V F, Aaronson H I eds., Decomposition of Austenite by Diffusional Processes, New York: Interscience, 1962: 387 4 刘国权,DeHoff R T.金属学报,1989:B338 5 余永宁,刘国权.体视学-组织定量分析的原理和应用.北京:冶金工业出版社,1989:35--75 6 Kapadia B M, Brown R M, Murphy W J. Trans Metall Soc AIME, 1968; 242: 1689 7 Maitrepierre P, Thivellier D, Rofes-Vernis J, Rousseau D, Tricot R. In: Doane D V, Kirkaldy J S eds., Hardenability Concepts with Applications to Steel, AIME. 1978: 421 8 Kapadia B M. In: Doane D V, Kirkaldy J S eds., Hardenability Concepts with Applications to Steel. 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