Acta Metall Sin  1988, Vol. 24 Issue (3): 261-266    DOI:

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MECHANISM OF DYNAMIC ROTATION RECRYSTALLIZATION IN Cr25Ti FERRITIC STAINLESS STEEL

GAO Fei;XU Yourong Dalian Institute of Railway; Shanghai University of Science and TechnologyShanghai University of Science and Technology; Jiading; Shanghai

GAO Fei;XU Yourong Dalian Institute of Railway; Shanghai University of Science and TechnologyShanghai University of Science and Technology; Jiading; Shanghai. MECHANISM OF DYNAMIC ROTATION RECRYSTALLIZATION IN Cr25Ti FERRITIC STAINLESS STEEL. Acta Metall Sin, 1988, 24(3): 261-266.

Abstract References Related Articles Recommended Metrics Download:  PDF(1970KB)  Export:  BibTeX | EndNote (RIS)       Abstract  The hot deformation behaviour and microstructure change of a Cr25 Tiferritic stainless steel under compression at strain rate 5×10~(-2)s~(-1) and 1100℃ byusing formaster press have been studied. It is observed that in the early stage, theminor fine grains were found along the original grain boundaries, and under thefurther increasing strain, the intragranular nucleation became more predominate.The stronger dynamic recovery results in a lot of well-defined subgrains. The strainwill induce the subgrain rotation together with the subboundary coalescence andform new grains. An observation also revealed that lattice orientation betweendynamic recrystallization grains is formed from the progressing rotation in "tilt"or "torsion" of subgrain in the original grains. It seems that the dynamic recrys-tallization nucleation of Cr25Ti steel is similar to several minerals in that bothare nucleated homogeneously by the strain inducing progressing rotation of sub-grains. However, a high degree of "asynchronism" during dynamic recrystallizationcauses no obvious peak on the stress-strain plot. Key words:  CrTi ferritic stainless steel      strain inducing subgrain rotation      dynamic recrystallization      hot deformation      Received:  18 March 1988      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/Y1988/V24/I3/261 1 Hobbs B E. Tectonophysics, 1968; 6: 353 2 Poirier J P, Nicalas A. J Geol, 1975; 83: 707 3 Ion S E, Humphreys F J. White S H. Acta Metall, 1982; 30: 1909 4 Humphreys F J. 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