Effect of boron on the hot ductility of 2.25Cr1Mo steel

被引：58

作者：

Song, SH ^{[1
]}

Guo, AM

Shen, DD

Yuan, ZX

Liu, J

Xu, TD

机构：

[1] Wuhan Univ Sci & Technol, Sch Met & Mat, Wuhan 430081, Hubei, Peoples R China

[2] Wuhan Iron & Steel Grp Co, Res Inst, Wuhan 430080, Hubei, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2003年 / 360卷 / 1-2期

关键词：

low-alloy steel; hot ductility; grain boundary; segregation;

D O I：

10.1016/S0921-5093(03)00438-6

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The effect of boron on the hot ductility of 2.25Cr1Mo steel is investigated by means of a Gleeble 2000 thermomechanical simulator. There is a trough in the hot ductility-temperature curve, which is located between 1000 and 700 degreesC. The ductility trough shifts to lower temperatures with increasing boron content and the hot brittle range becomes shallow and narrow. In general, boron may improve the steel hot ductility in that it may retard the formation of pro-eutectoid ferrite and increase grain boundary cohesion. These effects may be related to the segregation of boron to austenite grain boundaries. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：96 / 100

页数：5

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