...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Materials Science and Engineering >Room temperature mechanical properties and tensile creep behavior of powder metallurgy processed and hot rolled Al and Al-SiC_p composites
【24h】

Room temperature mechanical properties and tensile creep behavior of powder metallurgy processed and hot rolled Al and Al-SiC_p composites

机译：粉末冶金和热轧Al和Al-SiC_p复合材料的室温力学性能和拉伸蠕变行为

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

Room temperature mechanical properties and tensile creep behavior of powder metallurgy processed and hot rolled Al and its composites with 5, 10, 15 and 20vol.% SiC particulate reinforcements, have been evaluated. The cracks introduced in particles or at particle-matrix interfaces of the composites by hot rolling are found to increase with SiC volume fraction, and adversely affect mechanical properties. Although dynamic Young's modulus, matrix microhardness, yield and ultimate tensile strengths increase moderately with SiC content, yet the differences between moduli obtained experimentally and from rule of mixtures increase due to poor interfacial load transfer. Creep curves obtained at 21 MPa and 623 K show primary, secondary and tertiary regimes, with steady state creep rate increasing and time to rupture decreasing with increasing SiC volume fraction following Monkman-Grant relationship. Studies of tensile and creep fracture surfaces have revealed matrix and particle-matrix interfacial damage, respectively as having dominant role in failure.
机译：已评估了粉末冶金处理和热轧Al及其具有5、10、15、20和20vol。％SiC颗粒增强剂的复合材料的室温力学性能和拉伸蠕变行为。发现通过热轧在复合材料的颗粒中或在颗粒-基体界面处引入的裂纹随着SiC体积分数的增加而增加，并且不利地影响机械性能。尽管动态杨氏模量，基体显微硬度，屈服强度和极限抗拉强度随SiC含量的增加而适度增加，但由于界面载荷传递不佳，实验获得的模量与混合物规则之间的差异有所增加。遵循Monkman-Grant关系，随着SiC体积分数的增加，在21 MPa和623 K时获得的蠕变曲线显示出主要，次要和三次状态，稳态蠕变速率增加且破裂时间减少。对拉伸和蠕变断裂表面的研究表明，基质和颗粒-基质界面损伤分别在破坏中起主要作用。

著录项

  • 来源
    《Materials Science and Engineering》 |2010年第26期|p.6831-6837|共7页
  • 作者

    Sharmilee Pal; K.K. Ray; R. Mitra;

  • 作者单位

    Department of Metallurgical and Materials Engineering, Indian Institute of Technology, Kharagpur 721302, West Bengal, India;

    Department of Metallurgical and Materials Engineering, Indian Institute of Technology, Kharagpur 721302, West Bengal, India;

    Department of Metallurgical and Materials Engineering, Indian Institute of Technology, Kharagpur 721302, West Bengal, India;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    mechanical characterization; creep; composite; powder metallurgy; interfaces;

    机译：机械特性蠕变;综合;粉末冶金介面;

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