316L不钢的表面颗粒精炼,用粗卷制
Yasmin Maril1, Carlos Camurri1, Oscar Zapata-Hernández2
1Department of Materials Engineering, University of Concepción, Edmundo Larenas 315, Concepción 4070415, Chile.
Materials (Basel, Switzerland)
|October 14, 2023
概括
这项研究引入了一种新的冷方法,使用粗的卷来创建表面微型和纳米结构. 这种高生产率的工艺增强了材料表面的性能,包括增加了纳米硬度和减少了磨损.
科学领域:
- 材料科学 材料科学 材料科学
- 表面工程是什么?表面工程是什么?
- 金工业是金工业的一个方面.
背景情况:
- 喷砂是一种用于表面纹理的常见方法,但它是一种不连续和低生产率的过程.
- 开发连续和高生产率的方法来创建表面微型和纳米结构对于先进的材料应用至关重要.
研究的目的:
- 开发一种新的,连续的,高生产率的方法来产生表面微型和纳米结构.
- 为了研究冷工艺的潜力,使用粗卷,然后以低温回火为表面修饰.
- 分析经过处理的奥氏体不钢的表面微观结构,机械性能和磨损行为.
主要方法:
- 奥氏体不钢板是冷的,使用具有金字塔形度的专用粗卷.
- 样品随后在低温下 (200-400°C) 化1小时.
- 进行了微结构分析 (光学和电子显微镜),有限元素分析 (FEA),纳米硬度测试和磨损测试.
主要成果:
- 该过程成功地产生了不均的表面变形,创造了用于再结晶的核化中心.
- 微结构分析揭示了小,异质分布的表面粒 (200-300 nm).
- FEA证实了显著和不均的变形,与重新结晶的谷物分布不均相相关. 表面纳米硬度增加了20%,与传统制样品相比,耐磨性得到了改善.
结论:
- 拟议的冷技术采用粗卷和低温回火,是生产表面微型和纳米结构的有效方法.
- 这种新的方法提供了一种连续和高生产率的替代方案,而不是用于表面修改的喷砂.
- 增强的表面性能,包括增加的硬度和耐磨性,证明了这种技术在各种材料应用中的潜力.
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