• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Ductility enhancement in an as-extruded Mg-5.5Zn-0.8Zr alloy by Sm alloying
【24h】

Ductility enhancement in an as-extruded Mg-5.5Zn-0.8Zr alloy by Sm alloying

机译：用SM合金化脱挤出的Mg-5.5Zn-0.8Zr合金中的延展性增强

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

In this study, an as-extruded Mg-5.5Zn-0.8Zr-4Sm (ZK60-4Sm) alloy with enhanced ductility was fabricated and the microstructure and mechanical properties were investigated in detail. Results indicate that new micron (Mg, Zn)(3)Sm and nanoscale Mg41Sm5 phases are formed in ZK60-4Sm alloy and these undissolved eutectic phases distribute along the extrusion direction (ED). Other than that, a large number of nano-precipitated phases are observed in Mg matrix. In addition to being strengthening phases, the second phases can also pin dislocation and block grain boundary slip. According to Electron Back-Scattered Diffraction (EBSD) analysis, the addition of Sm has remarkable effect on promoting dynamic recrystallization (DRX) and grain refinement. Besides, the texture intensity of the alloys decreases significantly from 28.62 to 6.66. Owing to the joint effect of grain refinement, second phase strengthening and texture weakening, the yield strength (YS) and elongation (EL) of ZK60-4Sm alloy are improved significantly. In particular, the elongation (EL) of ZK60-4Sm alloy is increased by 100% compared with that of ZK60 alloy (14.1%), reaching 28.1%. Thus, a new as-extruded ZK60-4Sm alloy with enhanced ductility is obtained. (C) 2019 Elsevier B.V. All rights reserved.
机译：在该研究中，制造了一种具有增强延性的用挤出的Mg-5.5ZN-0.8ZR-4SM（ZK60-4SM）合金，详细研究了微观结构和机械性能。结果表明，新的微米（Mg，Zn）（3）Sm和纳米级Mg41sm5相形成为ZK60-4SM合金，并且这些未溶解的共晶相沿挤出方向（ED）分布。除此之外，在Mg基质中观察到大量纳米沉淀的相。除了加强阶段之外，第二阶段还可以引脚位错和块晶界滑动。根据电子背散衍射（EBSD）分析，添加SM对促进动态再结晶（DRX）和晶粒细化具有显着影响。此外，合金的质地强度从28.62升至6.66。由于晶粒细化，第二相强化和质地疲软，ZK60-4SM合金的屈服强度（ys）和伸长（El）显着提高。特别地，ZK60-4SM合金的伸长率（EL）与ZK60合金（14.1％）相比增加了100％，达到28.1％。因此，获得了具有增强延展性的新的作为挤出的ZK60-4SM合金。 （c）2019 Elsevier B.v.保留所有权利。

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