Deformation characteristics of dual-phase steels
Deformation characteristics of dual-phase steels
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DOI：
10.1007/bf02642418
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发表时间：
1982
期刊：
影响因子：
--
通讯作者：
A. Marder
中科院分区：
文献类型：
--
作者：
A. Marder
研究了马氏体体积分数对双相钢强度、塑性和断裂行为的影响。对于V-和Mo-轴承合金，马氏体的量之间存在线性关系，拉伸强度和均匀延伸率。与以前的报告预测马氏体的微裂纹高于0.2体积分数负责的延性下降，没有马氏体cracking被发现。断裂是由小夹杂物或铁素体/马氏体界面处的空隙形成。在严重带状组织中，强度/延展性关系受到间接影响，因为在延展性较低的马氏体中裂纹扩展的趋势没有被铁素体基体钝化。
An investigation was made to determine the effect of volume fraction of martensite on the strength, ductility, and fracture behavior of dual-phase steels. For both V-and Mo-bearing alloys, a linear relationship was found to exist between the amount of martensite and both tensile strength and uniform elongation. Contrary to previous reports that predict microcracking of martensite above 0.2 volume fraction to be responsible for a drop-off in ductility, no martensite cracking was found. Fracture was caused by void formation at small inclusions or at the ferrite/martensite interface. In severely banded structures, the strength/ductility relationship was detrimentally affected because of the tendency for crack propagation in the less ductile martensite without the cracks being blunted by the ferrite matrix.