在Mn18Cr2高耐磨钢板表面裂纹的缺陷分析
Dongjie Yang1, Ning Zhang2, Zhihao Liu2
1Department of Materials and Energy, Shanxi Institute of Mechanical & Electrical Engineering, Changzhi 046011, China.
Materials (Basel, Switzerland)
|January 28, 2026
概括
18Cr2钢板的裂纹缺陷源于造板的遗传裂纹,并由制过程加剧. 这些缺陷呈现氧化和入,导致由于细粒强化而导致更高的表面硬度.
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.
- 发生故障的分析.
背景情况:
- 高钢板 (Mn18Cr2) 对耐磨性至关重要.
- 了解裂缺陷对于提高材料性能和可靠性至关重要.
研究的目的:
- 系统地分析Mn18Cr2高耐磨钢板裂纹缺陷的原因.
- 研究微观结构,化学成分,硬度和缺陷形成之间的关系.
主要方法:
- 金属学显微镜检查微观结构.
- 场发射扫描电子显微镜 (FE-SEM) 用于表面和裂分析.
- 维克斯硬度测试以确定硬度变化.
主要成果:
- 在钢板表面发现有内部氧化和入的折叠裂.
- 在高温氧化过程中发生了显著的Mn和Cr元素扩散.
- 缺陷源于造板的遗传裂,在制过程中压入表面.
- 由于细粒强化和变形结合,观察到表面硬化,表面硬度 (351 HV) 超过核心硬度 (275 HV).
结论:
- 18Cr2钢的裂缺陷主要是由于板中先前存在的裂的继承和滚动引起的传播引起的.
- 高温氧化和氧化物/的不完全去除有助于缺陷的严重程度.
- 观察到的表面硬化是由于滚动变形引起的微观结构变化的结果.
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