动态再结晶微结构演变的建模和模拟 GCr15 钢使用水平设置方法.
Xuewen Chen1, Mingyang Liu1, Yisi Yang1
1School of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471023, China.
Materials (Basel, Switzerland)
|January 25, 2025
概括
本研究开发了一种模型,用于预测热变形过程中GCr15轴承钢的动态再结晶 (DRX). 该模型准确地预测了微观结构的演变,DRX分数和颗粒大小,这对于材料性能至关重要.
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.
- 计算材料科学科学 计算材料科学
背景情况:
- 微观结构显著影响金属材料的性能.
- 了解动态再结晶 (DRX) 是控制热变形过程的关键.
- GCr15轴承钢的微结构演变需要准确的预测模型.
研究的目的:
- 建立GCr15轴承钢中DRX的微结构演化模型.
- 准确预测热变形期间的DRX行为和微观结构变化.
- 将模型集成到有限元软件中进行模拟.
主要方法:
- 结合水平集 (LS) 方法与吉希-拉斯拉维-乔纳斯位位动态模型.
- 使用热模拟器对GCr15钢进行热压缩试验.
- 从实验流应力数据中获得材料参数,并集成到DIGIMU®软件中.
主要成果:
- 研究了温度,应变和应变速率对DRX和粒度的大小的影响.
- 在热压缩过程中成功模拟了GCr15钢DRX微结构.
- 预测的平均粒径和流量应力与实验结果有很好的一致性.
结论:
- 开发的DRX模型有效地预测了DRX分数和平均颗粒大小的演变.
- 该模型可靠地预测热造过程中的DRX行为.
- 精确预测微观结构演变可以提高对材料性能的控制.
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