冷拉Mg-Gd线的微观结构和纹理演变在化处理过程中
Liuxia Sun1, Jing Bai2, Feng Xue2
1School of Arts and Sciences, Shanghai Dianji University, Shanghai 201306, China.
Materials (Basel, Switzerland)
|April 9, 2024
概括
-加多 (Mg-4.7 wt%Gd) 合金线的化精炼了粒度,并优化了纹理,以改善冷绘. 在375°C的最佳化提高了可变形性,达到144%的最大应变.
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.
- 物理金学 物理金学
背景情况:
- 在准备Mg-4.7重%Gd (G4.7) 合金线的同时,冷拉线的炼对于准备Mg-4.7重%Gd (G4.7) 合金线非常重要.
- 了解化对微观结构和纹理的影响对于优化线材性能至关重要.
研究的目的:
- 为了研究火处理对冷拉G4.7线的再结晶微观结构和纹理的影响.
- 为了将引发的变化与随后的冷性能相关联.
主要方法:
- 制冷绘制的Mg-4.7重%Gd合金.
- 在不同温度 (例如325°C,375°C) 进行回火处理.
- 微结构分析 (粒度大小,均性,规律性) 和纹理分析 (方向分布).
主要成果:
- 在375°C的化结果是精细,均和正规的再结晶的粒度,提高了随后的绘图变形性,达到144%的最大累积真压力 (ATS).
- 微观结构的演变与纹理的演变相关:在325°C时,弱的基底纹理转变为基于<112 ̄0>//DD的再结晶纹理,在更高的温度下.
- 高温回火并没有完全恢复挤出质感,因为保留了冷拉变形质感,影响了绘图性能.
结论:
- 优化化条件,特别是在375°C,对于在G4.7线材中实现理想的再结晶微观结构和纹理至关重要.
- 再结晶的粒度的均性和规律性,以及化质地,显著影响了后续冷绘的成功.
- 需要仔细控制热温度,以平衡颗粒精细化和纹理发展,以最大限度地提高线材延展性.
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