在垂直离心造过程中对固化进行数值模拟,用于具有增强机械性能的TC4合金车轮枢纽
Yujie Yang1,2, Xiangyi Wang1,2, Xiangming Li1,2
1School of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China.
Materials (Basel, Switzerland)
|January 11, 2024
概括
使用直角实验优化Ti-6Al-4V合金轮的垂直离心造,提高了机械性能. 该研究确定了减少缺陷和提高拉伸强度的最佳参数,为TC4合金造提供了有价值的参考.
科学领域:
- 材料科学 材料科学 材料科学
- 制造业 工程 制造工程
- 金工业是金工业的一个方面.
背景情况:
- Ti-6Al-4V (TC4) 合金轮在垂直离心造过程中会出现缺陷,影响性能.
- 了解固化过程对于缓解这些问题和提高产品质量至关重要.
研究的目的:
- 为了优化 TC4 合金轮的垂直离心造过程参数.
- 研究参数对固化行为,微观结构和机械性能的影响.
- 为了减少缺陷,如收缩孔隙.
主要方法:
- 正角实验设计以系统地改变过程参数.
- 在固化过程中分析速度和温度场.
- 微结构检查和机械性能测试 (拉伸强度,维克斯硬度).
- 模拟总收缩孔径的模拟.
主要成果:
- 旋转速度主要影响速度场;倒和模具预热温度影响温度场和凝固时间.
- 确定了最佳参数:每分钟225转的旋转速度,400°C的模具预热和1750°C的倒温度.
- 优化造产生了一个TC4轮,具有均的β相分布和增强的性能 (820MPa的抗拉强度).
- 收缩孔径的模拟与实验发现有很好的相关性.
结论:
- 优化的垂直离心造工艺显著改善了TC4合金车轮枢纽的性能.
- 确定的最佳参数为缺陷减少和物业增强提供了一个强大的框架.
- 这项研究为TC4组件的垂直离心造的工业应用提供了宝贵的见解.
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