• 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 and Mechanical Properties of Large-Scale AZ80 Magnesium Alloy Billets Produced by Multitemperature Multidirectional Forging
【24h】

Microstructure Evolution and Mechanical Properties of Large-Scale AZ80 Magnesium Alloy Billets Produced by Multitemperature Multidirectional Forging

机译：多目标多向锻造生产大型AZ80镁合金坯料的微观结构演化与力学性能

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

Grain refinement is an effective method to improve the mechanical properties of magnesium (Mg) alloys. In the present research, the combination of multidirectional forging (MDF) and forward extrusion for sizing with decreasing temperature pass by pass was employed to deform as-cast AZ80 magnesium alloy billet with large size to obtain fine grains and homogeneous microstructure. It was found that with the increasing number of MDF passes, the average grain size decreases; the homogeneity of microstructures and the percentages of dynamic recrystallised grains increase simultaneously. After six-pass MDF, fine and homogeneous microstructure with an average grain size of 15 mu m was achieved; however, grain refinement became very difficult with a further increase in the MDF pass number. After eight-pass MDF plus forward extrusion for sizing, excellent mechanical properties of large-scale AZ80 magnesium alloy billet were obtained. The tensile strength, the yield strength and the elongation of billet are 410MPa, 292MPa and 14%, respectively. Furthermore, during multitemperature MDF, the inverse of the square root of grain size and tensile yield strength fit well with the Hall-Petch relationship.
机译：晶粒细化是改善镁（Mg）合金的机械性能的有效方法。在本研究中，采用多向锻造（MDF）和向前挤出的组合通过通过降低温度通过尺寸的尺寸通过通过铸造的AZ80镁合金坯料变形，以获得细粒和均匀的微观结构。发现随着MDF的数量越来越多，平均晶粒尺寸降低;微观结构的均匀性和动态再结晶晶粒同时增加的百分比。在六次通过MDF之后，实现了平均晶粒尺寸为15μm的精细和均匀的微观结构;然而，谷物细化变得非常困难，在MDF通行证的进一步增加。在八次MDF加上正向挤出后，获得大规模AZ80镁合金坯料的优异机械性能。钢筋的拉伸强度，坯料和伸长率分别为410MPa，292MPa和14％。此外，在多温度MDF期间，晶粒尺寸的平方根的倒数与霍尔辅助关系均匀拟合。

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