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在不同的热处理下,新型TWIP钢的微观结构和机械性能
Jiaruiming Zhang1, Yu Bai1,2, Wenxue Fan2
1Key Laboratory of Solidification Control and Digital Preparation Technology (Liaoning Province), School of Materials Science and Engineering, Dalian University of Technology, Dalian 116024, China.
Materials (Basel, Switzerland)
|May 11, 2024
概括
这项研究研究了一种新的,,和合金TRIP钢. 溶液处理和回火优化其微观结构,产生出色的强度和可塑性.
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:
- 先进的高强度钢 (AHSS) 对于轻量化汽车设计至关重要.
- 双联诱导可塑性 (TWIP) 钢提供了高强度和可塑性的独特组合.
- 优化新型TWIP钢结构的加工对于其实际应用至关重要.
研究的目的:
- 研究溶液处理和回火温度对新型Al-Si-V-Mo合金TWIP钢的微观结构和机械性能的影响.
- 了解沉物在控制奥氏体谷物生长中的作用.
- 通过优化加工来实现强度和可塑性的协同增强.
主要方法:
- 微结构特征技术被用来分析钢结构.
- 进行室温拉伸试验以评估机械性能.
- 进行了溶液处理和回火温度的系统变化.
主要成果:
- 由于MC和M2C的降水,奥氏体颗粒大小在加热温度上升时呈现有限的增长.
- 通过重新溶解大沉物,溶液处理显著提高了塑性.
- 优化加工 (冷和在800°C的溶液后处理) 导致产强度为877MPa,抗拉强度为1457MPa,延长率为46.1%.
结论:
- 在回火过程中,MC和M2C的沉有效地阻碍了奥氏体颗粒的生长.
- 溶液处理是提高这种TWIP钢的可塑性的一个关键步骤.
- 设计的TWIP钢显示出优异的强度-柔性协同作用,主要是由谷物精炼和沉强化驱动的.
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