• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Materials Research >Investigation on creep behavior of welded joint of advanced 9%Cr steels
【24h】

Investigation on creep behavior of welded joint of advanced 9%Cr steels

机译：先进的9％Cr钢焊接接头的蠕变行为研究

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 creep behavior of advanced 9%Cr-1 (BM1) and advanced 9%Cr-2 (BM2) dissimilar welded joints was investigated in this paper, and also the microstructures were elaborately characterized. Based on the fitting with MATLAB, a 3-D curved surface describing the primary and steady-state creep stage was achieved. The comparison of the microstructures of the precreep and aftercreep welded joints shows that δ-ferrite distribution in the heat affected zone (HAZ) of BM2 side plays an important role in determining creep rupture strength. Fracture occurred at the overtempered heat affected zone (OT-HAZ) adjacent to BM2 after creep tests at 538 ℃ under different stress loads. Microhardness tests revealed that the OT-HAZ adjacent to BM2 has the lowest hardness value compared with the whole welded joint. Numerous creep voids occurring around 8-ferrite, carbides, and grain boundaries were observed on the specimen after creep test. They concentrated and grew up to microcracks, and then induced the fracture at OT-HAZ. Many second phases were also observed in the grain boundary after creep, and the tempered martensite boundaries in the HAZ gradually become obscure as the creep time increases.
机译：研究了先进的9％Cr-1（BM1）和先进的9％Cr-2（BM2）异种焊接接头的蠕变行为，并详细描述了其微观结构。基于与MATLAB的拟合，获得了描述初始蠕变阶段和稳态蠕变阶段的3-D曲面。蠕变焊接头和蠕变焊接头的微观结构的比较表明，BM2侧热影响区（HAZ）中的δ铁素体分布在确定蠕变断裂强度方面起着重要作用。在不同应力载荷下于538℃进行蠕变试验后，断裂在邻近BM2的过热回火区（OT-HAZ）发生。显微硬度测试表明，与整个焊接接头相比，与BM2相邻的OT-HAZ的硬度值最低。蠕变测试后，在样品上观察到8铁素体，碳化物和晶界周围出现许多蠕变空隙。它们集中并长大到微裂纹，然后在OT-HAZ处引起断裂。蠕变后在晶界还观察到许多第二相，并且随着蠕变时间的增加，热影响区中的回火马氏体边界逐渐变得模糊。

著录项

  • 来源
    《Journal of Materials Research》 |2015年第2期|197-205|共9页
  • 作者

    Donghai Meng; Fenggui Lu; Haichao Cui; Yuming Ding; Xinhua Tang; Xin Huo;

  • 作者单位

    School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China Shanghai Key Laboratory of Materials Laser Processing and Modification, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China;

    School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China Shanghai Key Laboratory of Materials Laser Processing and Modification, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China;

    School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China Shanghai Key Laboratory of Materials Laser Processing and Modification, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China;

    Shanghai Turbine Plant of Shanghai Electric Power Generation Equipment Co. Ltd., Shanghai 200240, People's Republic of China;

    School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China Shanghai Key Laboratory of Materials Laser Processing and Modification, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China;

    Shanghai Turbine Plant of Shanghai Electric Power Generation Equipment Co. Ltd., Shanghai 200240, People's Republic of 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