超高强度的Mg-Li合金与B2颗粒和旋点分解区域
Shun Zhang1, Ruizhi Wu1,2, Feng Zhong1
1Key Laboratory of Superlight Materials & Surface Technology (Ministry of Education), Harbin Engineering University, Harbin 150001, China.
Fundamental research
|June 27, 2024
概括
将 (Zn) 合金与 (Mg-Li) 合金进行合金,可以显著提高其强度. 这项研究表明,添加和热处理如何在Mg-Li合金中达到高达495MPa的度强度.
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.
- 合金开发 合金开发
背景情况:
- - (Mg-Li) 合金在工程金属材料中具有最低的密度.
- 由于机械强度不足,它们的广泛应用受到限制.
研究的目的:
- 研究 (Zn) 合金对改善体中心立方 (bcc) Mg-Li合金强度的影响.
- 描述Zn合金Mg-Li合金中的微结构演变和强化机制.
主要方法:
- 合金和造Mg-Li-Zn合金. 合金和造Mg-Li-Zn合金. 合金和造Mg-Li-Zn合金.
- 作为造和作为灭的微结构分析.
- 机械性质测试 (压缩产量强度).
- 热处理 (老化) 以优化性能.
主要成果:
- 成的Mg-13Li-9Zn合金由于半连贯的B2结构纳米粒子,实现了超过300MPa的压力强度.
- 作为灭的Mg-13Li-15Zn (LZ1315) 合金表现出400MPa的屈服强度,这归因于固体溶液的强化和旋点分解.
- 合金LZ1315的峰值老化导致495MPa的收益强度,由B2纳米颗粒的沉驱动.
结论:
- 合金是一种提高bcc Mg-Li合金强度的有效策略.
- 微观结构特征,如B2纳米粒子和旋点区域在加强中发挥着至关重要的作用.
- 优化热处理可以显著提高实际应用的产量强度.
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