Grain-Refining Mechanism of Heavy Cold-Rolling of Lath Martensite

Abstract:

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This paper analyzed the microstructure evolution and grain-refining mechanism in producing ultra-fine grained steel sheet by heavy rolling of lath martensite. The results show that this technique is composed of three processes with different grain-refining mechanism respectively: i) austenite grains subdivide into homogeneous and tiny martensite laths during quenching; ii) martensite laths are thinned and damaged during heavy rolling; iii) equiaxed ultra-fine ferrite forms during low temperature recrystallization annealing.

Info:

Periodical:

Advanced Materials Research (Volumes 148-149)

Edited by:

Xianghua Liu, Zhengyi Jiang and Jingtao Han

Pages:

1701-1704

DOI:

10.4028/www.scientific.net/AMR.148-149.1701

Citation:

X. Zhao and X. L. Yang, "Grain-Refining Mechanism of Heavy Cold-Rolling of Lath Martensite", Advanced Materials Research, Vols. 148-149, pp. 1701-1704, 2011

Online since:

October 2010

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Price:

$35.00

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