• 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 >Room Temperature Ductility and Microstructure of Magnesium AZ31B Sheet
【24h】

Room Temperature Ductility and Microstructure of Magnesium AZ31B Sheet

机译：镁AZ31B板材的室温延展性和组织

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

Formability of wrought magnesium alloys at room temperature or slightly elevated temperatures is modest, reaching about 20% elongation in a tension test and exhibiting poor resistance to strain localization and failure. The hexagonal close packed structure of Mg has few active slip systems at lower forming temperatures, limiting ductility and reducing applications in auto body structures. Much greater levels of ductility can be reached at higher temperatures (typically >300 °C), but this is expensive and inconvenient for a high-volume production environment. Tension testing and biaxial forming of annealed AZ31B magnesium alloy sheets were done at room temperature to various levels of strain. High-resolution electron back scatter diffraction (EBSD) was used to measure twin fraction and dislocation density, in order to find relationships between strain and potential failure locations within the microstructure. Twin fractions were found to have a weak positive correlation to uniaxial and biaxial tensile strain, while dislocation density was found to correlate more strongly with uniaxial tensile strain.
机译：变形镁合金在室温或略微升高的温度下的可成形性中等，在拉伸试验中达到约20％的伸长率，并且对应变局部化和破坏表现出较差的抵抗力。镁的六方密堆积结构在较低的成型温度下几乎没有活性滑移系统，限制了延展性并减少了在车身结构中的应用。在较高的温度（通常> 300°C）下可以达到更高的延展性，但这对于昂贵的生产环境而言是昂贵且不便的。退火的AZ31B镁合金板的拉伸测试和双轴成型是在室温下进行到各种应变水平的。高分辨率电子背散射衍射（EBSD）用于测量孪晶分数和位错密度，以发现微观结构内应变与潜在破坏位置之间的关系。发现孪晶分数与单轴和双轴拉伸应变具有弱的正相关性，而位错密度与单轴拉伸应变的相关性更强。

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