冷减速对具有费里特-珍珠岩初始结构的Q&P钢的微观结构和性能的影响
Shengwei Wang1, Mengxiao Chen2,3, Mingyue Yang1
1Institute for Carbon Neutrality, University of Science and Technology Beijing, Beijing 100083, China.
Materials (Basel, Switzerland)
|September 28, 2023
概括
薄板造和制 (TSCR) 减少了汽车火和分区 (Q&P) 钢的冷. 增加的冷削减减少了Q&P钢的减少.
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.
- 汽车工程 汽车工程
背景情况:
- 和分隔 (Q&P) 钢是第三代汽车工业的关键材料.
- 传统生产 (CP) 需要高的累积冷减速率 (CRRR),达到60-70%.
- 薄板造和制 (TSCR) 为CP提供了一种精简,节能和具有成本效益的替代方案,可能减少或消除冷.
研究的目的:
- 调查冷累积减速率 (CRRR) 对Q&P钢的微观结构和性能的影响.
- 为了解决CRR对通过薄板造和制 (TSCR) 工艺生产的Q&P钢材所忽视的影响.
- 为Q&P钢铁生产优化TSCR提供见解.
主要方法:
- 对Q&P钢材进行实验调查,这些钢材经过不同程度的累积冷削减 (CRRR).
- 微结构分析,观察相位比例和形态的变化.
- 机械性能测试,以评估产量强度和可塑性.
主要成果:
- 在Q&P钢中,增加的CRRR与降低的率强度和可塑性之间发现了直接关系.
- 微观结构的变化包括减少马氏体块大小和比例,增加矿比例,减少保留的奥氏体.
- 降低产强度归因于更高的费里特含量,而降低的可塑性与更低的保留奥氏体有关.
结论:
- 该研究阐明了CRR对使用TSCR方法生产的Q&P钢材性能的关键影响.
- 研究结果强调了冷减速与机械性能之间的权衡,特别是产量强度和可塑性.
- 在TSCR过程中优化CRR对于Q&P钢在汽车行业的成功应用至关重要.
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