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首页> 外文期刊>Zeitschrift fur Metallkunde >Comparison of damage development depending on the local microstructure in low alloyed Al-TRIP-steels, IF steel and a DP steel
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Comparison of damage development depending on the local microstructure in low alloyed Al-TRIP-steels, IF steel and a DP steel

机译：比较低合金化的Al-TRIP钢，IF钢和DP钢中取决于局部微观组织的损伤发展

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摘要

A study of the microstructural effects on the void initiation and crack growth in aluminium alloyed TRIP (transformation induced plasticity) steels has been conducted. Understanding of this microstructural dependency of the crack development is necessary to increase the failure limit and the energy absorption rate of the material. Different microstructures in terms of phase volume fractions and spatial arrangement of these phases have been obtained by annealing. Additionally, different austenite stabilities, both geometrically as well as chemically based, have been obtained. First the macroscopic mechanical properties are linked to the microstructure. Furthermore, different characteristic prestraining levels are subsequently correlated to the microstructural damage evolution by observation of the samples with backscatter electron diffraction-based orientation microscopy in a high resolution scanning electron microscope. The experiments result in a prediction of the most critical microstructural parameters when high damage tolerance is needed.
机译：已经对铝合金TRIP（相变诱导塑性）钢中的空洞萌发和裂纹扩展进行了微观结构研究。了解裂纹发展的这种微观结构依赖性对于增加材料的破坏极限和能量吸收速率是必要的。在相体积分数和这些相的空间排列方面，已经通过退火获得了不同的微观结构。另外，已经获得了几何和化学基础上的不同的奥氏体稳定性。首先，宏观机械性能与微观结构有关。此外，通过在高分辨率扫描电子显微镜中使用基于背向散射电子衍射的取向显微镜观察样品，随后将不同的特征预应变水平与微结构损伤演变相关联。当需要高损伤耐受性时，实验可以预测最关键的微观结构参数。

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