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


Article Preview

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.



Advanced Materials Research (Volumes 148-149)

Edited by:

Xianghua Liu, Zhengyi Jiang and Jingtao Han




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




[1] R.Z. Valiev, R.K. Islamgaliev and I.V. Alexadrov: Prog. Mater. Sci. Vol. 45(2000), p.103.

[2] N. Kamikawa, T. Sakai and N. Tsuji: Acta Mater. Vol. 55 (2007), p.5873.

[3] T.F. Jing, F.R. Xiao and D.Y. Cai, P.R. China Patent 00101493. 5. (2000).

[4] X. Zhao, T.F. Jing and et al: Mater. Sci. Eng. Vol. 397A (2005), p.117.

[5] S. Morito, H. Tanaka, R. Konishi, et al: Acta Mater. Vol. 50 (2003), p.1789.