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通过选择性激光炼制造后塑料变形的奥氏体不钢的微观结构和性能演变

Huimin Tao¹, Zi Li^1,2, Linlin Ma³

¹Nanxun Innovation Institute, Zhejiang University of Water Resources and Electric Power, Hangzhou 310018, China.

|October 29, 2025

概括

选择性激光化 (SLM) 304不钢选择性激光化 (SLM) 304不钢

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.
添加剂制造添加剂制造添加剂制造

背景情况:

选择性激光化 (SLM) 是奥氏体不钢的关键增材制造技术.
在维护过程中,SLM不钢元件可能会发生塑性变形,因此需要了解性能变化.

研究的目的:

研究拉伸变形对SLM304不钢的微观结构,机械性能和耐腐蚀性的影响.
阐明这些变化的进化规则.

主要方法:

拉力测试以诱导不同程度的塑性变形.
使用电子显微镜进行微结构分析,观察粒度结构和相变.
纳米硬度测试用于评估机械性能.
通过表面被动膜分析对抗腐蚀的评估.

主要成果:

增加的塑料变形导致了SLM304不钢的谷物碎片化,失序的方向和亚谷物形成.
观察到alpha-prime (α') martensite含量的显著增加和被动膜厚度的轻微减少.
纳米硬度随着变形而增加,而耐腐蚀性则下降.

结论:

后塑性变形显著改变SLM304不钢的微观结构和性能.
适度的变形为平衡增强的机械性能与可接受的耐腐蚀性提供了一条途径.
结果为优化增材制造钢材性能和工程应用提供了理论见解.

关键词:

添加剂制造添加剂制造添加剂制造腐蚀性质腐蚀性质机械性能机械性能机械性能微观结构的微观结构不钢不钢的使用方法拉伸变形,拉伸变形的情况.

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