通过磁噪声和第一波分析检测双重不钢中的西格玛相
João Silva1, Edgard Silva1, Augusto Sampaio1
1Academic Unit of Industry, Federal Institute of Education, Science and Technology of Paraíba, Av. Primeiro de Maio, 720-Jaguaribe, João Pessoa 58015-435, Brazil.
Materials (Basel, Switzerland)
|September 28, 2024
概括
在双重不钢中检测有害的西格玛相对于保持性和耐腐蚀性至关重要. 磁噪声分析有效地识别了这一阶段,防止了材料的脆化.
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.
- 非破坏性测试 不破坏性测试
背景情况:
- 双重不钢可以在550°C以上形成脆性西格玛阶段.
- 这个西格玛阶段损害了性和耐腐蚀性.
- 非破坏性电磁测试 (EMNDT) 对材料特性有价值.
研究的目的:
- 调查SAF 2205钢中有害的西格玛相的检测.
- 用磁噪声分析激发波与双重不钢的相互作用.
- 为了优化EMNDT参数用于西格玛相位检测.
主要方法:
- 使用磁噪声分析和第一个波幅变化.
- 采用霍尔效应传感器,而不是传统的提取线圈.
- 在钢样品上应用侧面刺激波 (5 Hz,25 Hz;0.25 V9 V).
- 使用扫描电子显微镜对微观结构进行了表征.
主要成果:
- 优化的测试条件涉及1V至2V的波幅.
- 第一个波幅被证明是有效的检测.
- 该方法成功地确定了西格玛阶段的存在.
- 测试与材料的能量吸收能力和脆性有关.
结论:
- 使用霍尔效应传感器进行磁性噪声分析,可以有效地检测双重不钢中的西格玛相.
- 优化的EMNDT参数可以可靠地识别有害的微观结构.
- 这种技术有助于评估材料的脆性,并确保性能.
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