...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Key Engineering Materials >Characterization of Creep Resistance for Local Structure of Power Plant Weldment Using SP-Creep Technique
【24h】

Characterization of Creep Resistance for Local Structure of Power Plant Weldment Using SP-Creep Technique

机译：SP爬坡技术表征电厂焊接局部结构的抗蠕变性

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

Power plant weldments are composed of various microstructures. Due to welding and PWHT processes, the microstructure of the base metal adjacent to fusion line is transformed into entirely different microstructures, collectively known as heat affected zone (HAZ). Creep, on the other hand, is considered as the most important deterioration mechanism of heat resistant components found in power plants. Therefore it is essential to evaluate creep properties of HAZ, which is considered to be very hazardous in weldment. Recently, most of the creep tests for HAZ are conducted using cross weld type specimen. However there are some problems with this type of creep test due to the results being largely varied according to the volume fraction of HAZ. In this paper, SP-Creep test, which has confirmed the availability for creep properties evaluation, has been conducted on each of the weldment microstructures. The results showed that each microstructure has a different creep behavior. The overall creep properties of HAZ are worse than those of the weld metal. Among the HAZ structures, fine grained HAZ has the worst creep properties.
机译：电厂焊件由各种微结构组成。由于焊接和PWHT工艺，与熔合线相邻的贱金属的微观结构转变为完全不同的微观结构，统称为热影响区（HAZ）。另一方面，蠕变被认为是发电厂中耐热组件最重要的劣化机理。因此，评估热影响区的蠕变特性至关重要，而热影响区在焊接中被认为非常危险。最近，大多数的热影响区蠕变测试都是使用交叉焊接型试样进行的。但是，这种类型的蠕变测试存在一些问题，这是因为结果会根据HAZ的体积分数而大不相同。在本文中，已经对每个焊件微结构进行了SP-Creep测试，该测试证实了蠕变性能评估的可用性。结果表明，每个微结构具有不同的蠕变行为。 HAZ的总体蠕变性能比焊接金属差。在热影响区结构中，细晶粒的热影响区具有最差的蠕变性能。

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