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不同AA7204/AA6082摩擦动接接头的质地诱导耐腐蚀性
Liqun Guan1,2,3, Manfa Yuan4, Jin Zhang4
1Institute of Intelligent Manufacturing, Suzhou Jianxiong Vocational and Technical College, Suzhou 215400, China.
Materials (Basel, Switzerland)
|September 28, 2023
概括
颗粒的方向显著影响合金的摩擦接接 (FSW) 中的耐腐蚀性. 特定的方向,如黄铜纹理 ({110}<112>),提高了在热力学受影响区域 (TMAZ) 的腐蚀性能.
科学领域:
- 材料科学 材料科学 材料科学
- 腐蚀工程 腐蚀工程
- 金工业是金工业的一个方面.
背景情况:
- 摩擦接 (FSW) 制造出具有复杂微观结构的不同连接.
- 在FSW接头中的热机械受影响区域 (TMAZ) 容易腐蚀.
- 了解粒度方向在腐蚀中的作用对于材料性能至关重要.
研究的目的:
- 为了研究粒度方向对不同AA6082/AA7204FSW接头的腐蚀行为的影响.
- 在TMAZ I.中将特定的晶体纹理与耐腐蚀性相关联.
- 为设计具有更好的腐蚀性能的FSW接头提供见解.
主要方法:
- 几乎在现场使用了电子反射衍射 (EBSD) 测试.
- 在AA6082/AA7204 FSW接头的TMAZ I中分析了腐蚀行为.
- 微结构分析侧重于腐蚀期间的粒度方向和纹理演变.
主要成果:
- 接近黄铜质感的粒度方向 ({110}<112>) 显示出出色的耐腐蚀性.
- 与7204-RS关节相比,7204-AS关节的TMAZ I显示出优越的腐蚀性能.
- 腐蚀最好沿着特定的平面发生,与质质感颗粒的变形机制保持一致.
结论:
- 结晶学定位,特别是黄铜质感,是FSW接头抗腐蚀性的一个关键因素.
- 在TMAZ中优化粒度方向可以显著提高造合金的腐蚀性能.
- 这些发现为设计FSW接头提供了基础,以定制的微观结构来提高耐用性.
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