• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Chinese journal of aeronautics >Effect of Processing and Composition on the Structure and Properties of P/M EP741NP Type Alloys
【24h】

Effect of Processing and Composition on the Structure and Properties of P/M EP741NP Type Alloys

机译：工艺和成分对P / M EP741NP型合金组织和性能的影响

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

A study was carried out on the effects of processing and composition on the structure and properties of P/M EP741NP type alloys. The objectives of this study were to understand the role of Hf in a P/M superalloy containing high niobium used in aircraft engines and to determine the effects of extrusion and forging the powders as contrasted to HIPing (hot isostatic pressing) only. Two alloys of the P/M EP741NP composition were atomized: one alloy contained 0.26%Hf and the other was Hf free. After the as-atomized powders from both alloys were characterized, the powders were extruded into billets, forged and heat treated. After each process, the microstructures were characterized by SEM and the phases were extracted and identified by X-ray diffraction. The presence of Hf in the residues was probed by EDS (energy dispersive spectroscopy). The alloys were given the published Russian heat treatment as well as a more conventional heat treatment more typical of western powder alloys. Tensile, creep and stress rupture mechanical property tests were run. Results of the structural behavior of the alloys after each processing step will be presented and discussed. The role of the Hf on the mechanical properties will be discussed.
机译：研究了加工和组成对P / M EP741NP型合金结构和性能的影响。这项研究的目的是了解Hf在飞机发动机中使用的含高铌的P / M高温合金中的作用，并确定粉末的挤压和锻造效果（仅与HIPing（热等静压）相反）。将P / M EP741NP组成的两种合金雾化：一种合金含0.26％Hf，另一种不含Hf。对两种合金的雾化粉末进行表征后，将粉末挤压成方坯，进行锻造和热处理。在每个过程之后，通过SEM对微观结构进行表征，并通过X射线衍射提取和鉴定相。残留物中Hf的存在通过EDS（能量分散光谱）进行探测。这些合金已获得俄罗斯公布的热处理以及西方粉末合金更典型的常规热处理。进行了拉伸，蠕变和应力断裂力学性能测试。将介绍和讨论每个加工步骤后合金的结构行为结果。将讨论Hf对机械性能的作用。

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