...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Materials Science and Engineering >Grain refinement and mechanical properties of CP-Ti processed by warm accumulative roll bonding
【24h】

Grain refinement and mechanical properties of CP-Ti processed by warm accumulative roll bonding

机译：热累积辊压粘合处理CP-Ti的晶粒细化和力学性能

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

Accumulative roll bonding (ARB), a severe plastic deformation technique, was used in this study to process commercially pure titanium (CP-Ti) at 450 ℃. Sheet samples were processed by seven consecutive ARB cycles, with an overall equivalent strain of 5.6. Mechanical characterization and microstructural examination were carried out on the processed material to track their changes and relationships with regard to one another. Electron microscopy, TEM in particular, revealed significant grain refinement in the material, with submicron microstructure achieved even after one cycle of warm processing. Further processing was shown to progressively fragment the highly elongated grains, ultimately producing a predominantly-equiaxed ultrafine grain structure with an average grain size of ～100nm. Tensile strength and microhardness of the material increased with the number of ARB cycles; the strength-grain size relationship followed the Hall-Petch equation. The overall grain refinement and strengthening levels observed here are close to those reported in the literature for ARB processing of CP-Ti at ambient temperatures. This demonstrates the ability of warm ARB can be as effective as cold ARB, while offering several advantages for industrial utilization.
机译：在这项研究中，使用累积的辊压粘结（ARB），一种严重的塑性变形技术，在450℃下加工商业纯钛（CP-Ti）。片材样品通过七个连续的ARB循环进行处理，总等效应变为5.6。在加工后的材料上进行了机械表征和微观结构检查，以追踪它们之间的变化和关系。电子显微镜，特别是TEM，显示出材料中的晶粒细化，即使经过一个温暖的加工周期，仍具有亚微米的微观结构。研究表明，进一步加工会逐渐破碎高度拉长的晶粒，最终产生平均晶粒尺寸为〜100nm的等均衡的超细晶粒结构。材料的拉伸强度和显微硬度随ARB循环次数的增加而增加；强度-晶粒尺寸关系遵循Hall-Petch方程。此处观察到的总体晶粒细化和强化水平与文献中报道的在环境温度下对CP-Ti进行ARB处理的晶粒细化和强化水平相近。这证明了温暖的ARB与寒冷的ARB一样有效，同时为工业利用提供了许多优势。

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