Gradient-structured ultra-fine bainitic low-alloy rail steel and preparation method thereof

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United States of America Patent

PATENT NO 12084737
APP PUB NO 20240218478A1
SERIAL NO

18471144

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A gradient-structured ultra-fine bainitic low-alloy rail steel and a preparation method thereof are provided in the present application, belonging to the technical field of steel metallurgy. The rail steel to be treated is subjected to three thermal processing treatments so that the gradient-structured ultra-fine bainitic rail steel has a gradient structure consisting of a ferrite-pearlite dual phase microstructure and an ultra-fine bainite microstructure. The gradient structure of the present application enables the matrix of the rail to be a ferrite-pearlite composite phase structure, and only the surface layer of the service surface to be ultrafine bainite.

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YANSHAN UNIVERSITY066004 NO 438 HEBEI AVENUE QINHUANGDAO HEBEI QINHUANGDAO CITY HEBEI PROVINCE 066004

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chen, Chen Qinhuangdao, CN 720 3975
Gao, Xinliang Qinhuangdao, CN 5 21
Li, Hongguang Qinhuangdao, CN 22 178
Liang, Zhuanqin Qinhuangdao, CN 1 0
Liu, Changbo Qinhuangdao, CN 8 2
Sun, Dongyun Qinhuangdao, CN 3 1
Wang, Jianjun Qinhuangdao, CN 158 1470
Wang, Qingchao Qinhuangdao, CN 5 1
Yang, Zhinan Qinhuangdao, CN 3 3
Zhang, Fucheng Qinhuangdao, CN 14 221

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