• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Materials Engineering and Performance >Effects of Austempering Temperature on Strength, Ductility and Toughness of Low-C High-Al/Si Carbide-Free Bainitic Steel
【24h】

Effects of Austempering Temperature on Strength, Ductility and Toughness of Low-C High-Al/Si Carbide-Free Bainitic Steel

机译：奥氏体化温度对低碳高Al / Si无碳化贝氏体钢的强度，延展性和韧性的影响

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

The microstructure and the mechanical properties of a low-carbon Al/Si-alloyed carbide-free bainitic steel austempered at temperatures between 300 and 350 A degrees C have been investigated by means of optical microscopy, scanning electron microscopy, transmission electron microscopy, x-ray diffraction analysis, and mechanical property tests. The results show that an excellent combination of tensile strength, ductility, and impact toughness is obtained at the austempering temperature of 320 A degrees C-but neither at the lowest temperature of 300 A degrees C nor at the highest temperature of 350 A degrees C. These results are correlated with the features of the constituent phases of the microstructure, especially the amount and size of retained austenite, which are largely dependent on the austempering temperature. The observations are also due to the inconsistent effects of strain-induced martensitic transformation on strength, ductility, and toughness. The results of the present study suggest that an optimized isothermal temperature may also exist for any other bainitic steel, at which, if austempering treatment is carried out, an improved combination of tensile and impact properties can be obtained.
机译：通过光学显微镜，扫描电子显微镜，透射电子显微镜，x-射线法研究了在300至350 A的温度下回火的低碳无Al / Si合金的无碳化贝氏体钢的组织和力学性能。射线衍射分析和力学性能测试。结果表明，在320 A的奥氏体温度下获得了抗拉强度，延展性和冲击韧性的极佳组合，但在最低温度300 A或最高温度350 A下均未获得。这些结果与显微组织的组成相的特征有关，特别是残余奥氏体的数量和大小，这在很大程度上取决于奥氏体回火温度。观察结果还归因于应变引起的马氏体转变对强度，延展性和韧性的不一致影响。本研究的结果表明，对于任何其他贝氏体钢，也可能存在优化的等温温度，在该温度下，如果进行奥氏体回火处理，则可以获得拉伸性能和冲击性能的改进组合。

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