• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Materials Science and Engineering >Effects of niobium alloying on microstructure, toughness and wear resistance of austempered ductile iron
【24h】

Effects of niobium alloying on microstructure, toughness and wear resistance of austempered ductile iron

机译：铌合金化对奥氏体球墨铸铁组织，韧性和耐磨性的影响

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

Austempered ductile iron (ADI) is a heat-treated nodular iron variant that has for a given strength level much higher elongation than conventional iron with spheroidized graphite. This paper considers the effect of niobium addition on the graphite microstructure, bainite microstructure, bainite transformation process and properties such as hardness and impact toughness under given heat-treatment conditions. The resulting properties are significant with regard to the wear resistance of the material. The effects of niobium addition on the graphite morphology can be understood based on a detailed precipitation analysis of the niobium precipitation behavior in the liquid phase. Niobium influences the temperature and kinetics of pearlite as well as bainite transformation. Furthermore, niobium refines the bainite microstructure generated during austempering treatment. It was found that niobium addition in the range of 0.2-0.5 wt percent allows obtaining an optimum combination of hardness, impact toughness and wear resistance.
机译：奥氏体球墨铸铁（ADI）是一种经过热处理的球墨铸铁变体，在给定的强度水平下，其伸长率比带球化石墨的常规铸铁高得多。在给定的热处理条件下，考虑了铌对石墨组织，贝氏体组织，贝氏体转变过程以及硬度和冲击韧性等性能的影响。在材料的耐磨性方面，所得的性能是重要的。通过对液相中铌沉淀行为的详细沉淀分析，可以了解铌添加对石墨形态的影响。铌会影响珠光体的温度和动力学以及贝氏体的转变。此外，铌细化了在回火处理过程中产生的贝氏体组织。已经发现，铌的添加量在0.2-0.5wt％的范围内，可以获得硬度，冲击韧性和耐磨性的最佳组合。

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