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期刊论文

Behaviors of the interface and matrix for the Ag/Cu bimetallic laminates prepared by roll bonding and diffusion annealing

孟亮L. Meng L. Zhang

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摘要/描述

The Ag/Cu bimetallic laminates were prepared by rolling bond at different temperature and annealing for different time at 673K and 1023K. Their microstructure, composition and hardness were investigated in the matrix or diffusion zone of the laminates. Dynamic recrystallization induced in rolling process produces the mixture microstructure containing deformed and equiaxial grains. There exists an incomplete recrystallized structure for the laminates annealed at 673K and a polygonal-grain structure for the laminates annealed at 1023K. The grain size in the strip matrixes increases with increasing rolling or annealing temperature. Recrystallization process during rolling or annealing causes the hardness reduction. The reduction is more significant in the Cu side of the laminates rolled at 873K and in the strip matrixes annealed for 0.5h. Faster velocity of Cu atom moving into the Ag side than Ag atom into the Cu side results in a position shifting of Cu concentration curve in the Ag side. The shifting becomes more significant with prolonging annealing time. In the Ag side of the laminates annealed at 1023K, there is a region of fine equiaxial grains along original interface and its width increases with prolonging annealing time. Some Cu-rich particles precipitate along grain boundaries in the fine grain region and can slightly harden the Ag strip component.

【免责声明】以下全部内容由[孟亮]上传于[2004年12月31日 20时37分46秒],版权归原创者所有。本文仅代表作者本人观点,与本网站无关。本网站对文中陈述、观点判断保持中立,不对所包含内容的准确性、可靠性或完整性提供任何明示或暗示的保证。请读者仅作参考,并请自行承担全部责任。

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