微观结构
材料科学
成核
成形性
均质化(气候)
冶金
热机械加工
相(物质)
纹理(宇宙学)
退火(玻璃)
合金
复合材料
热力学
化学
人工智能
有机化学
生态学
生物多样性
物理
图像(数学)
生物
计算机科学
作者
Jakob Grasserbauer,Irmgard Weißensteiner,Georg Falkinger,Thomas Kremmer,Peter J. Uggowitzer,Stefan Pogatscher
出处
期刊:Materials
[MDPI AG]
日期:2021-06-10
卷期号:14 (12): 3204-3204
被引量:8
摘要
The increasing demands for Al sheets with superior mechanical properties and excellent formability require a profound knowledge of the microstructure and texture evolution in the course of their production. The present study gives a comprehensive overview on the primary- and secondary phase formation in AlMg(Mn) alloys with varying Fe and Mn additions, including variations in processing parameters such as solidification conditions, homogenization temperature, and degree of cold rolling. Higher Fe alloying levels increase the primary phase fraction and favor the needle-shaped morphology of the constituent phases. Increasing Mn additions alter both the shape and composition of the primary phase particles, but also promote the formation of dispersoids as secondary phases. The size, morphology, and composition of primary and secondary phases is further affected by the processing parameters. The average dispersoid size increases significantly with higher homogenization temperature and large primary particles tend to fragment during cold rolling. The microstructures of the final soft annealed states reflect the important effects of the primary and secondary phase particles on their evolution. The results presented in this paper regarding the relevant secondary phases provide the basis for an in-depth discussion of the mechanisms underlying the microstructure formation, such as Zener pinning, particle stimulated nucleation, and texture evolution, which is presented in Part II of this study.
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