Effect of carbon concentration on tensile behaviour of pearlitic steels
Effect of carbon concentration on tensile behaviour of pearlitic steels
复制标题
碳浓度对珠光体钢拉伸行为的影响
DOI：
10.1179/026708303225008310
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发表时间：
2003
影响因子：
1.8
通讯作者：
Y. Moriai
中科院分区：
文献类型：
--
作者：
Y. Tomota;O. Watanabe;A. Kanie;A. Moriai;N. Minakawa;Y. Moriai
摘要 研究了含碳量为 0.39 - 0.77 wt% 的珠光体钢的流变应力和微观结构之间的定量关系。确定真实层状间距（S 0）的分布。发现S 0 取决于碳浓度和珠光体转变温度，并具有相当大的分布。 0.2%屈服强度被描述为平均S 0 的函数，但是S 0 测量精度的影响排除了对0.2%屈服强度的令人满意的预测。高加工硬化对应于由铁素体和渗碳体之间的失配塑性应变引起的相应力的产生。通过拉伸变形过程中的原位中子衍射验证了铁素体和渗碳体之间的应力分配行为。
Abstract A quantitative relationship between flow stress and microstructure is studied for pearlitic steels incorporating 0.39 - 0.77 wt-% carbon. The distribution of true lamellar spacing (S 0) is determined. It is found that S 0 depends on carbon concentration and pearlite transformation temperature accompanying a considerable distribution. The 0.2% proof stress is described as a function of the averaged S 0 but the influence of the accuracy in S 0 measurement precludes satisfactory prediction of the 0.2% proof stress. High work hardening corresponds to the generation of phase stress caused by misfit plastic strain between ferrite and cementite. The stress partitioning behaviour between ferrite and cementite is verified by in situ neutron diffraction during tensile deformation.