结晶纹理的演变和由高含量高强度钢的单轴变形引起的材料异构效应
Michael Zuern1, Morteza Dadkhah2, Thomas Nitschke-Pagel2
1Institute for Applied Materials (IAM-WK) Karlsruhe Institute of Technology Engelbert-Arnold-Straße 4 76131 Karlsruhe Germany.
概括
这项研究检查了汽车钢的变形,揭示了晶体间的菌株,而不仅仅是晶体结构,显著影响合板中的衍射数据和应力分析.
科学领域:
- 材料科学 材料科学 材料科学
- 金工业是金工业的一个方面.
- 机械工程 机械工程
背景情况:
- 汽车钢对于通过提高强度和可塑性来提高车辆安全,性能和效率至关重要.
- 高深引钢利用结合诱导的可塑性 (TWIP) 和转化诱导的可塑性 (TRIP) 来获得先进的机械性能.
- 了解材料异性质和晶体质感对于准确的汽车板材应力分析至关重要.
研究的目的:
- 在单轴变形下研究特定汽车钢 (X40MnCrAlV-19-2.5-2,HCT690T,S355MC) 的变形行为.
- 分析晶体纹理和材料异性质的演变及其对X射线衍射数据的影响.
- 确定衍射数据损坏的主要原因,并提出合板残余应力评估的校正方法.
主要方法:
- 实验室使用X射线衍射分析来研究钢的行为.
- 调查的重点是单轴变形期间晶体质感和材料异性质的演变.
- 分析了直至均延长极限的变形,以了解其对衍射模式的影响.
主要成果:
- 单轴变形会产生强烈的晶体纹理和显著的材料异性质,损害衍射数据.
- 衍射数据的损坏主要归因于粒际菌株,而不仅仅是晶体结构.
- 晶体间菌株是由于晶体在elasto-plastic体制中的差异变形而产生的.
结论:
- 在变形的汽车钢中进行精确的应力分析,需要考虑晶体纹理以及晶体间的菌株.
- 该研究使用接金属板应用示例来证明这些现象.
- 建议的校正方法有助于在复杂的汽车钢制部件中更可靠地评估残余应力.
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