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首页> 外文期刊>Quantum Beam Science >Deformation Mechanisms of Twinning-Induced Plasticity Steel under Shock-Load: Investigated by Synchrotron X-ray Diffraction
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Deformation Mechanisms of Twinning-Induced Plasticity Steel under Shock-Load: Investigated by Synchrotron X-ray Diffraction

机译：冲击载荷下孪晶诱导塑性钢的变形机制：Synchrotron X射线衍射研究

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As an ideal candidate material for automobiles, twinning-induced plasticity (TWIP) steels possess excellent formability, high strength and high energy absorption ability during collision. This is attributed to its deformation mechanism of mechanical twinning, resulting in a high work hardening rate. In the current study, deformation mechanisms of low-stacking fault energy TWIP steel, under different strain rates between 0.01/s to 1581/s, were investigated by high-energy X-ray diffraction. After compression, grains with {110}||compression direction became favourable. Higher intensity was observed near brass and A components in the selected orientation distribution function (ODF) section (Φ2 = 45°) for all the compressed specimens. The activity of twinning was found to be the highest in the specimens that had been compressed with medium–high strain rates (e.g., 100/s and 10/s), while the texture component related to slip had stronger intensity in the specimen deformed with a quasi-static strain rate (0.01/s).
机译：作为汽车的理想候选材料，孪生诱导的可塑性（TWIP）钢在碰撞期间具有优异的可成形性，高强度和高能量吸收能力。这归因于机械孪晶的变形机制，从而产生高效的硬化率。在目前的研究中，通过高能X射线衍射研究了低堆叠故障能量Twip钢的低堆叠故障能量Twip钢的变形机制，从0.01 / s至1581 / s。压缩后，具有{110} ||压缩方向的谷物变得有利。在黄铜附近观察到更高的强度，以及所有压缩样本的选定取向分布函数（ODF）部分（φ2= 45°）中的组件。发现孪晶的活性是用中高应变速率（例如，100 / s和10 / s）压缩的标本中最高的，而与滑移有关的质地组分在样品中具有较强的强度变形准静态应变率（0.01 / s）。

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