Effects of deformation temperature and rate on compressive deformation behaviour of Y112 die cast al

• 作 者: 杨明波 胡红军 唐丽文 代兵
• 机 构: College of Materials Science and Engineering Chongqing Institute of Technology,Chongqing 400050,Chin
• 出 处: Transactions of Nonferrous Metals Society of China
• 发表日期: 2004年期
• 关键词: compressive behaviour easting isothermal simulator refined heating SIMA mould 瓜城

The semi-solid compression deformation behaviour of Y112 die casting aluminum alloy with nondendritic structure obtained under the semi-solid isothermal treatment condition of 570℃and 120 min, was investigated by means of Gleeble-1500 thermal-mechanical simulator. The results show that, when the strain is lower than 0.8, along with the compression strain increasing, the compression stress firstly increases rapidly, then decreases gradually. Under the condition of different deformation temperatures and deformation rates, the maximum compression stress is obtained simultaneously when the strain is 0.07 approximately. Furthermore, when the deformation rate keeps a constant, the compression stress decreases along with the deformation temperature increasing, and when the deformation temperature keeps a constant, the compression stress increases along with the deformation rate increasing.

The semi-solid compression deformation behavior of Y112 die casting aluminum alloy with nondendritic structure obtained under the semi-solid isothermal treatment condition of 570 ° C and 120 min, was investigated by means of Gleeble-1500 thermal-mechanical simulator. The results show that, when the strain is lower than 0.8, along with the compression strain increasing, the compression stress first increase rapidly, then decreases gradually When the deformation rate keeps a constant, the compression stress decreases along with the deformation temperature increasing, and when the deformation temperature keeps a constant, the compression stress increases along with the deformation rate increasing.