含量对55SiCr弹钢的非金属含量和固化微结构的影响
Haiyan Tang1, Sen Cai1, Peng Lan1
1School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China.
Materials (Basel, Switzerland)
|November 27, 2024
概括
将 (Ce) 添加到55SiCr钢中,可以提炼非金属含有物,并在固化过程中提高等比率. 最佳的含量显著改善异质核化,导致优越的钢铁微结构.
科学领域:
- 金工程 金工程 金工程
- 材料科学 材料科学 材料科学
背景情况:
- 非金属内含物显著影响高强度弹钢的机械性能和性能.
- 了解稀土元素 (如) 在修改钢材内含物和微观结构中的作用,对于先进的材料开发至关重要.
研究的目的:
- 研究不同 (Ce) 含量对55SiCr高强度弹钢中非金属含的类型和大小的影响.
- 分析添加对钢的固化微观结构的影响,特别是等轴比率.
- 通过热力学计算,阐明含有的含的形成机制.
主要方法:
- 对具有不同度的55SiCr钢进行实验研究 (0,0.011,0.017,0.075重%).
- 分析非金属内含物和固化微结构的分析.
- 热力学计算,包括吉布斯自由能量分析和相位图,以解释纳入形成.
主要成果:
- 添加改变了包含的类型和大小,从MnS和氧化物转向基于Ce-S,Ce-O-S和Ce-P的包含.
- 固化结构的等氧比率随着含量增加而增加,在0.017 wt% Ce时达到67.63%,表明增强的异质核化.
- 更高的含量 (0.075 wt%) 导致更大的含含量含量.
结论:
- 在55SiCr钢中,有效地修改非金属含有物,并促进等粒的生长.
- 0.017重量%的最佳含量显著增强了固化过程中的异质核化.
- 热力学分析为了解钢中的基含的形成途径提供了基础.
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