热变形构成分析和处理地图的超声波炼处理A5052合金的融处理A5052合金
Sun-Ki Kim1, Seung-Hyun Koo1, Hoon Cho2
1NICE LMS Co., Ltd., Yesan 32446, Republic of Korea.
Materials (Basel, Switzerland)
|July 13, 2024
概括
对A5052合金精细粒度结构的超声波化处理 (UST),Al-Ti主合金表现出比Ti sonotrodes更高的精细度. 在造条件下,USTT降低了流动不稳定性,同质化进一步提高了微观结构的均性.
科学领域:
- 材料科学 材料科学 材料科学
- 金工业是一种金工业.
- 物理金学 物理金学
背景情况:
- 颗粒精炼对于改善合金的机械性能至关重要.
- 超声波融处理 (UST) 是一种用于提高融质量和微观结构的技术.
- 了解热变形行为对于优化制造工艺至关重要.
研究的目的:
- 为了研究超声波处理 (UST) A5052合金的热变形构成分析和加工图.
- 在UST条件下比较Al-Ti主合金和Ti超声波器的粒度提炼效果.
- 分析USTT在热变形过程中对流动不稳定性的影响.
主要方法:
- 使用热扭力测试来评估热变形行为.
- 构成方程是根据实验数据推导出来的.
- 处理地图被生成以确定安全的处理窗口和潜在的不稳定区域.
- 进行了微观结构分析,以评估颗粒大小和相位分布.
主要成果:
- 添加Al-Ti主合金导致较细的颗粒大小,而与使用纯Ti声管的USTT相比.
- Al3Ti相粒子作为精炼谷物的有效核.
- UST促进了Ti溶液的均分布和降低孔隙性.
- 流动不稳定的区域在不造的USTT A5052合金中不存在,但在没有USTT的情况下存在.
- 同质化热处理消除了由于微观结构统一性的大部分不稳定区域.
结论:
- 基合金在A5052合金的粒度提炼上比基声波器更有效,即使使用UST.
- UST通过减少流动不稳定性,对A5052合金的热可加工性产生积极影响.
- 同质化处理在缓解微结构缺陷和提高加工稳定性方面是有效的.
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