• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Proceedings of the institution of mechanical engineers >Influence of pulsed current arc welding to preclude the topological phases in the aerospace grade Alloy X
【24h】

Influence of pulsed current arc welding to preclude the topological phases in the aerospace grade Alloy X

机译：脉冲电流电弧焊对排除航空级合金X拓扑相的影响

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

Alloy X is prone to liquation and solidification cracks in the weldments, because of the development of topologically close-packed precipitates such as sigma, P, M6C, and M23C6 carbides during arc welding methods. The present work examines the possibility of alleviating the segregation of Cr and Mo content to eliminate the development of topologically close-packed phases using a conventional arc welding technique. The welding of Alloy X has been achieved with ERNiCrMo-2 filler material by gas tungsten arc welding and pulsed current gas tungsten arc welding technique. The optical microscope shows the refined microstructure in pulsed current gas tungsten arc with respect to gas tungsten arc welding. The Mo-rich segregation was identified in gas tungsten arc weldment, and the same was absent in pulsed current gas tungsten arc. These segregations of Mo-rich content encourage the development of M3C and M6C secondary precipitates in gas tungsten arc welding. Pulsed current gas tungsten arc welding shows the existence of NiCrCoMo precipitate. The present work confirmed the absence of P, sigma, and M23C6 in both the weldments of Alloy X. The ultimate tensile strength, microhardness, and impact strength of pulsed current gas tungsten arc welding are increased by 3.39, 9.17, and 21.62%, respectively, with gas tungsten arc welding. The observed Mo-rich M3C and M6C secondary phases in the gas tungsten arc welding affect the tensile strength of the weldments.
机译：由于在电弧焊方法中出现了拓扑紧密堆积的析出物（例如sigma，P，M6C和M23C6碳化物），因此X合金在焊件中易于产生液化和凝固裂纹。本工作研究了使用常规电弧焊技术减轻Cr和Mo含量偏析以消除拓扑紧密堆积相的可能性。 X合金的焊接已通过ERNiCrMo-2填充材料通过气体钨极电弧焊和脉冲电流气体钨极电弧焊技术实现。光学显微镜显示了相对于气体钨极电弧焊的脉冲电流气体钨极电弧的细化显微组织。在气体钨极电弧焊件中发现了富钼偏析，而在脉冲电流气体钨极电弧焊中则没有。这些富Mo含量的偏析促进了钨极氩弧焊中M3C和M6C二次沉淀的发展。脉冲电流钨极电弧焊表明存在NiCrCoMo沉淀。目前的工作证实了在合金X的两种焊件中均不含P，sigma和M23C6。脉冲电流钨极氩弧焊的极限抗拉强度，显微硬度和冲击强度分别提高了3.39％，9.17和21.62％。 ，用钨极气体保护焊。气体钨极电弧焊中观察到的富钼的M3C和M6C第二相会影响焊件的拉伸强度。

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