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Updated: Jun 26, 2025

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Quantitative Hardness Measurement by Instrumented AFM-indentation
Published on: November 22, 2016
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在铁化物中负载独立硬度和隙尺寸效应
Sebastian Balos1, Milan Pecanac1, Mirjana Trivkovic1
1Department of Production Engineering, Faculty of Technical Sciences, University of Novi Sad, Trg Dositeja Obradovica 6, 21000 Novi Sad, Serbia.
Materials (Basel, Switzerland)
|May 11, 2024
概括
这项研究研究了一种铁-胺金属间化合物的微硬度. 确定了最佳的测试负载,揭示了不同的表面和中心行为,以准确地表征材料.
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.
- 表面工程是什么?表面工程是什么?
背景情况:
- 铁-化物金属间化合物在高温应用中至关重要.
- 了解它们的机械性能,特别是微硬度,对于性能预测至关重要.
- 由于加工和组成,表面和散装性能可能会有很大的差异.
研究的目的:
- 为了确定改铁胺的负载独立微硬度 (H_LIH).
- 为了确定最佳的维克斯微硬度测试负载范围,以获得准确的结果.
- 在样本的不同区域分析缩尺寸效应 (ISE) 和逆缩尺寸效应 (RISE).
主要方法:
- 维克斯微硬度测试在一系列负载 (10-1000 g) 中进行.
- 测试是在表面下0.5毫米和制样本的中心进行的.
- 使用迈耶定律,比例样本阻力 (PSR) 和修改后的PSR模型建模了负载依赖硬度.
主要成果:
- 表面表现出反向缩尺寸效应 (RISE),这是脆弱材料的特征.
- 中部显示了缩尺寸效应 (ISE),典型的金属行为.
- 最佳的微硬度被确定为表面>500g,中心>100g.
结论:
- 修改后的PSR模型提供了负载依赖性的最准确描述.
- 表面和中心区域的不同机械行为需要特定区域的测试参数.
- 精确的微硬度测定需要根据材料区域和观察到的ISE/RISE行为,仔细选择测试负载.
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