• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Materials Engineering and Performance >Microstructure Evolution of Semi-Solid 7075 Aluminum Alloy During Reheating Process
【24h】

Microstructure Evolution of Semi-Solid 7075 Aluminum Alloy During Reheating Process

机译：半固态7075铝合金再加热过程中的组织演变

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Microstructural evolution of semi-solid 7075 Al alloy manufactured by strain-induced melt activation (SIMA) process was investigated. The effects of different processing parameters, such as isothermal temperature and holding time on the semi-solid microstructures (the liquid volume fraction, average grain size, and degree of spheroidization of the solid particles) during partial remelting have been investigated on 7075 Al alloy that was extruded by an extrusion ratio of 20 before remelting. Experiments of remelting were carried out in the range of 560-610 °C for 10, 20, and 30 min holding time and then the specimens were quenched in cold water. Microstructure of quenched samples were observed under optical microscope and then analyzed via image analysis. The results showed that high semi-solid isothermal temperature would increase the liquid volume fraction and accelerate the spherical processing of the solid particles. Furthermore at long holding time, the globular grains coarsened slightly and the average grains size are increased. The experimental results showed that the optimum process parameters, should be chosen at isothermal temperature of 580 °C with the holding time, <30 min.
机译：研究了通过应变诱导熔体活化（SIMA）工艺制造的半固态7075铝合金的微观组织演变。对7075铝合金进行了研究，研究了等温温度和保温时间等不同加工参数对部分重熔过程中半固态微观结构（液体体积分数，平均晶粒度和固态颗粒的球化度）的影响。在重熔之前以20的挤出比挤出。在560-610°C的温度范围内进行了10、20和30分钟的重熔实验，然后在冷水中淬火。在光学显微镜下观察淬火样品的微观结构，然后通过图像分析进行分析。结果表明，较高的半固体等温温度会增加液体体积分数，并加速固体颗粒的球形加工。此外，在长时间的保持下，球状晶粒略微粗化并且平均晶粒尺寸增加。实验结果表明，应在580°C等温温度下选择最佳工艺参数，且保持时间<30分钟。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号