Effect of Cr on strain ageing behaviour of low carbon steel

被引：8
|
作者：
Pereloma, E. V. [1 ]
Bata, V. [1 ]
Scott, R. I. [2 ]
Smith, R. M. [2 ]
机构：
[1] Monash Univ, Dept Mat Engn, Clayton, Vic 3800, Australia
[2] BlueScope Steel Ltd, Port Kembla, NSW 2505, Australia
来源：
THERMEC 2006, PTS 1-5 | 2007年 / 539-543卷
基金：
澳大利亚研究理事会;
关键词：
low carbon steel; alloying; strain ageing; mechanical properties; transmission electron microscopy;
D O I：
10.4028/www.scientific.net/MSF.539-543.4214
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This work explores the effect of Cr addition on the kinetics of strain ageing process. The strain ageing behaviour of low carbon steel with and without 0.7wt% Cr was investigated using transmission electron microscopy (TEM), atom probe tomography (APT) and tensile tests. The results have shown that Cr alloyed steel undergoes the same three stages of ageing as unalloyed low carbon steel. However, the alloying with Cr reduces the rate of strain ageing by similar to 2 times in comparison with non-alloyed low carbon steel. It especially delays the offset of stage III. This is explained by the reduction of carbon content in ferrite due to the enrichment of cementite with Cr leading to the reduction of its equilibrium solubility in ferrite.
引用
收藏
页码：4214 / +
页数：2
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