在手工金属弧接双不钢中金属间阶段沉的动力学
Monika Orłowska1, Krzysztof Pańcikiewicz1, Aleksandra Świerczyńska2
1Faculty of Metals Engineering and Industrial Computer Science, AGH University of Krakow, 30-059 Kraków, Poland.
Materials (Basel, Switzerland)
|December 23, 2023
概括
热处理改变了薄双钢LDX2101和双钢2209的微观结构和相位含量. 在800°C温度下火长达1440分钟,诱导相位分解和沉,影响材料性能.
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.
- 物理金学 物理金学
背景情况:
- 像LDX2101和2209这样的双重不钢 (DSS) 提供了强度和耐腐蚀性的结合.
- 了解热处理过程中的相变化对于优化其性能至关重要,特别是在接接头上.
- 手动金属弧接 (MMAW) 是加入DSS的常见技术,但它可以引入微观结构的复杂性.
研究的目的:
- 为了研究热处理对瘦双钢LDX2101和双钢2209转换动力学的影响.
- 分析微观结构,硬度和磁相含量的变化,在800°C的化后进行不同时间的化.
- 为了将硬度测量与金学观测相关联,以有效评估沉过程.
主要方法:
- 在800°C的热处理时间为15到1440分钟.
- 使用光和扫描电子显微镜进行微结构分析.
- 维克尔斯硬度测试和磁相含量测量 (ferritoscope).
主要成果:
- 在LDX2101钢中,热处理导致delta-ferrite分解为gamma-2奥氏体和Cr2N化物.
- 在2209接中,退火导致了阶段 (15分钟) 和西格玛阶段 (120分钟) 的沉,以及现有的奥氏体和三角铁体.
- 观察到的微观结构变化与硬度变化相关,使得能够快速评估降水.
结论:
- 热处理显著改变了LDX2101钢和2209接的相位组成和微观结构.
- 阶段演变的动力学,包括化物和金属间沉,取决于火时间和温度.
- 将机械性能 (硬度) 与微结构分析相关联,为监测双重钢和接的热处理效应提供了一种有效的方法.
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