A novel high manganese austenitic steel with higher work hardening capacity and much lower impact de
A novel high manganese austenitic steel with higher work hardening capacity and much lower impact de
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DOI：
10.1016/j.matdes.2013.09.057
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发表时间：
2014-03
期刊：
影响因子：
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通讯作者：
Y. Wen;Haibing Peng;Haitao Si;Rongling Xiong;D. Raabe
中科院分区：
文献类型：
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作者：
Y. Wen;Haibing Peng;Haitao Si;Rongling Xiong;D. Raabe
针对高锰钢加工硬化能力差、低载荷下初始变形量大的问题，研究了一种新型高锰奥氏体钢Fe18Mn5Si0.35C(wt.%)在拉伸和冲击下的变形行为和组织。结果表明，该钢在低应变和高应变下具有比高锰钢更高的加工硬化能力。其冲击变形量远低于高锰钢。Fe18Mn5Si0.35C钢的这一独特性能是由于应力诱发的ε马氏体相变容易发生和数量迅速增加所致。结果间接证实了变形孪晶的形成是高锰钢异常加工硬化的主要原因。
To tackle the problem of poor work hardening capacity and high initial deformation under low load in Hadfield manganese steel, the deformation behavior and microstructures under tensile and impact were investigated in a new high manganese austenitic steel Fe18Mn5Si0.35C (wt.%). The results show that this new steel has higher work hardening capacity at low and high strains than Hadfield manganese steel. Its impact deformation is much lower than that of Hadfield manganese steel. The easy occurrence and rapid increase of the amount of stress-inducedεmartensitic transformation account for this unique properties in Fe18Mn5Si0.35C steel. The results indirectly confirm that the formation of distorted deformation twin leads to the anomalous work hardening in Hadfield manganese steel.