Development of hot-rolled dual-phase weathering steel Cu-P-Cr-Ni-Mo

被引：14
|
作者：
Zhang, Chunling [1 ]
Liao, Bo
Cai, Dayong
Zhao, Tianchen
Fan, Yunchang
机构：
[1] Yanshan Univ, Key Lab Metastable Mat Sci & Technol, Qinhuangdao 066004, Peoples R China
[2] Yanshan Univ, Coll Mat Sci & Engn, Qinhuangdao 066004, Peoples R China
[3] Shijiazhuang Railway Inst, Dept Mat Sci, Shijiazhuang 050043, Peoples R China
来源：
MATERIALS & DESIGN | 2007年 / 28卷 / 06期
关键词：
Cu-P-Cr-Ni-Mo weathering steel; continuous cooling transformation diagram; hot-rolling; metastable austenite; dual-phase;
D O I：
10.1016/j.matdes.2006.05.011
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The continuous cooling transformation (CCT) diagrams of weathering steels Cu-P-Cr-Ni-Mo were constructed by means of a combined method of dilatometry and metallography. The diagram of weathering steel with 0.41% Mo exhibits an elongated polygonal ferrite C-curve with a delayed pearlite-start, and a metastable austenite gap between the polygonal ferrite/pearlite and the bainitic ferrite regions. Weathering steel with 0.41% Mo is possible to obtain a dual-phase microstructure directly by hot-rolling and appropriate cooling. Dual-phase microstructures with some bainite and pearlite have been obtained by hot-rolled simulating on hot-rolled dual-phase treatment procedures deduced by the CCT diagram. Hot-rolled dual-phase weathering steel with 0.41% Mo has more excellent comprehensive mechanical properties and formability than commercial weathering steel 09CuPCrNi. (C) 2006 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1760 / 1766
页数：7
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