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关于CJ5L回收式不钢的固化结构和热可塑性的研究
Xianbang Dong1,2, Xiang Li1, Lei Huang2
1School of Materials Science and Engineering, University of Science and Technology Beijing, No. 30 Xueyuan Road, Haidian District, Beijing 100083, China.
Materials (Basel, Switzerland)
|March 13, 2025
概括
CJ5L回收式不钢的固化微结构显著影响其高温热可塑性. 最佳的加工发生在800-900°C之间,通过了解矿转化和固化模式来最大限度地减少裂.
科学领域:
- 材料科学 材料科学 材料科学
- 金工程 金工程 金工程
背景情况:
- 回收不钢在实现所需材料性能方面提出了独特的挑战.
- 了解固化微观结构对于预测高温行为至关重要.
研究的目的:
- 研究固化微结构对CJ5L回收式不钢的热可塑性的影响.
- 分析在造不钢中的残留铁和固化结构的转化.
- 为了确定加工CJ5L回收式不钢的最佳温度范围.
主要方法:
- 扫描电子显微镜 (SEM) 的使用
- 光学显微镜 (OM) 的使用
- 电子探测器微分析 (EPMA) 技术
- 能量分散式X射线光谱学 (EDS)
- 热力学计算的热力学计算
主要成果:
- 固化微观结构随着厚度的增加而从树突变为虫状,形成等粒.
- 剩余的费里特从骨形转变为颗粒状和棒状的形状,在造中心创建一个网络.
- CJ5L不钢从铁-氏体 (FA) 转变为氏体-氏体 (AF) 固化模式,厚度增加,残留铁含量增加.
- 在800°C和900°C之间观察到最佳的高温热可塑性,裂形成最小.
结论:
- 凝固模式和残留费里特含量受到造厚度和冷却速度的直接影响.
- 在回收钢中的成分分离有助于网络铁聚合.
- 控制固化过程是优化CJ5L回收不钢的高温热可塑性的关键.
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