• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Materials Research >Microstructure characteristics of spray-formed high speed steel and its evolution during subsequent hot deformation
【24h】

Microstructure characteristics of spray-formed high speed steel and its evolution during subsequent hot deformation

机译：喷射成形高速钢的组织特征及其在随后的热变形过程中的演变

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

The microstructural evolution of spray-formed high speed steel during hot deformation was investigated as well as the effects of spray forming parameters on the porosity formation. Four distinct zones are identified in the as-deposited material, and interstitial porosity is present in the bottom and peripheral zones, while gas-related porosity is mainly found in the central zone. It can keep the porosity at a minimum value by using the optimum parameters, e.g., the average porosity of central zone is 3.7% for a superheat of 170 ℃ and a gas-to-metal flow rate of 0.7. During hot deformation at 1150 ℃, the amount of porosity can be obviously decreased by increasing the height reduction which also plays a key role in breaking up eutectic carbides. The critical height reduction for the breakdown of the eutectic carbides is 50%, the dominant mechanism being mechanical fragmentation.
机译：研究了喷射成形高速钢在热变形过程中的微观组织演变以及喷射成形参数对孔隙形成的影响。在沉积的物质中识别出四个不同的区域，在底部和外围区域存在间隙孔隙，而与气体有关的孔隙主要在中央区域。通过使用最佳参数可以将孔隙率保持在最小值，例如，在170℃的过热度和0.7的金属气流量下，中心区域的平均孔隙率为3.7％。在1150℃的热变形过程中，通过增加高度减小量可以明显降低孔隙率，这在破坏共晶碳化物中也起着关键作用。共晶碳化物击穿的临界高度降低是50％，主要机理是机械破碎。

著录项

  • 来源
    《Journal of Materials Research》 |2016年第2期|274-280|共7页
  • 作者

    Lin Lu; Long-gang Hou; Jin-xiang Zhang; He-bin Wang; Hua Cui; Jin-feng Huang; Yong-an Zhang; Ji-Shan Zhang;

  • 作者单位

    State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China;

    State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China;

    State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China;

    State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China;

    State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China;

    State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China;

    State Key Laboratory of Non-Ferrous Metals and Process, General Research Institute for Non-Ferrous Metals, Beijing 100088, China;

    State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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