Micromechanics of Dual-Phase Steels: Deformation, Damage, and Fatigue
Micromechanics of Dual-Phase Steels: Deformation, Damage, and Fatigue
复制标题
双相钢的微观力学：变形、损伤和疲劳
DOI：
10.1007/978-981-10-6855-3_70-1
复制
发表时间：
2018
影响因子：
2.8
通讯作者：
S. Schmauder
中科院分区：
文献类型：
--
作者：
B. Anbarlooie;J. Kadkhodapour;H. H. Toudeshky;S. Schmauder
铁素体-马氏体双相（DP）钢越来越多地用于各种汽车部件中，因为它们对于轻量化和碰撞安全设计具有良好的材料性能。DP钢在微观尺度上以强应变和应力分配变形。铁素体和马氏体相在拉伸载荷下的变形模式是预测双相钢力学行为的重要依据。变形模式和应变局部化在损伤的形成和最终断裂过程中起着重要的作用。DP钢的失效是在过去十年中通过实验测试和模拟方法广泛研究的现象。实验程序表明，失败有一个韧性的模式和铁素体基体的剪切破坏是占主导地位的这些材料。另一方面，实验结果表明，由于疲劳载荷的破坏发生与其他加载条件相比，不同的模式。为了理解和改进DP钢，重要的是要确定微观结构参数和宏观尺度下这些材料的力学行为之间的联系。这项工作提供了一个详细的微观力学研究的DP钢专注于微变形，微损伤和微疲劳分析的DP钢的实验和数值方法的基础上，突出当前和未来的发展方向和开放的问题，这些材料。
Ferritic–martensitic dual-phase (DP) steels are increasingly being used in various automotive components because of their favorable material behavior for lightweight and crash-safe designs. DP steels deform with strong strain and stress partitioning at the microscale. Deformation pattern of ferrite and martensite phases under tensile loading condition is the most important issue which can be effective on the prediction of mechanical behavior of DP steel. Deformation pattern and strain localization play an important role in the process of damage initiation and final fracture. Failure in DP steels is a phenomenon that has been extensively investigated in the last decade through experimental tests and simulation methods. Experimental procedures have shown that failure has a ductile pattern and that shear failure of ferrite matrix is dominant in these materials. On the other hand, experimental findings have shown that failure due to fatigue loading occurred with different pattern comparing to the other loading conditions. To understand and improve DP steels, it is important to identify connections between the microstructural parameters and the mechanical behavior of these materials at macroscale. This work provides a detailed micromechanical investigation of DP steels focusing on micro-deformation, micro-damage, and microfatigue analysis of DP steels based on experimental and numerical approaches to highlight the current and future directions and open problems about these materials.