Precipitation strengthening in high manganese austenitic TWIP steels
Precipitation strengthening in high manganese austenitic TWIP steels
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DOI：
10.3139/146.110508
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发表时间：
2011-05-01
影响因子：
0.8
通讯作者：
Curfs, Caroline
中科院分区：
文献类型：
--
作者：
Scott, Colin;Remy, Blandine;Curfs, Caroline
在低应变（ε < 0.25）下，具有孪晶诱导塑性的奥氏体Fe-Mn-C钢中Ti、Nb、V碳化物的析出对加工硬化无明显影响。强化遵循Orowan机制，可以用简单的屈服应力补偿来描述。然而，在较高的应变（ε> 0.3）的加工硬化率略有下降。同步加速器X射线衍射分析表明，这是由于减少孪晶形成的动力学。当Ti添加量为530 MPa/wt.%时，冷轧板的强化系数最高对于V添加
At low strains (epsilon < 0.25), the precipitation of Ti, Nb, V carbides in austenitic Fe-Mn-C steels which exhibit twinning induced plasticity has no significant effect on work hardening. Strengthening follows the Orowan mechanism and can be described by a simple yield stress offset. However, at higher strains (epsilon > 0.3) the work hardening rate decreased slightly. Synchrotron X-ray diffraction analysis suggested that this was due to a reduction in the kinetics of twin formation. The highest strengthening coefficient in cold strips was obtained with Ti additions 530 MPa/wt.% for V additions