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钢化七线电气接的微观结构和机械性能
Yong Chen1, Yulang Xu2, Xianrui Zhao2
1School of Mechanical Engineering, Nanjing Vocational University of Industry Technology, No. 1 Yangshan North Road, Nanjing 210023, China.
Materials (Basel, Switzerland)
|April 24, 2025
概括
这项研究开发了一种新的硬化七线接材料,通过结合普通和柔性合金线. W2/W3组合表现出优越的冲击性,由于增强的针状铁和大角度粒边界,在特定的含量下具有最佳的可塑性.
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.
- 接工程 接工程
背景情况:
- 开发先进的接材料对于提高结构完整性至关重要.
- 现有的接线通常需要修改,以满足苛刻的机械性能标准.
- 加固的七线配置为提高接接性能提供了潜力.
研究的目的:
- 组装和研究一种新的硬化七线接材料.
- 分析所产生的接接的微观结构,机械性能和硬机制.
- 确定最佳成分,以提高冲击性和可塑性.
主要方法:
- 灵活调节使用普通和含电线的七线电线配置.
- 接接的微观结构特征,专注于铁素相和内含物.
- 机械性能测试,包括冲击性,屈服强度,抗拉强度,延长和断面收缩.
- 分析谷物边界特征及其与骨折预防的相关性.
主要成果:
- 接接主要由proeutectoid铁 (PF) 和 acicular铁 (AF) 组成.
- 含有Al,Ti,Si,Mn氧化物和Mn/Cu硫化物的含有物作为AF的核化场所,Ti化合物促进核化.
- 组合式七线W2/W3表现出更高的冲击性,归因于增加的AF和更高比例的大角度粒边界 (≥15°).
- 含量影响了AF含量,强度和可塑性,在W2/W3组合中观察到最佳的可塑性.
结论:
- 这种新型硬化七线接材料表现出有前途的机械性能,符合CCS标准.
- 在特定含量和添加的影响下,针状铁核和生长是提高冲击性的关键.
- 较高比例的大角粒边界有助于显著提高抗脆性骨折的抵抗力.
- 组合式七线W2/W3为特定接应用提供了最佳的可塑性和性组合.
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