• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Materials Science and Engineering >The role of powder atomisation route on the microstructure and mechanical properties of hot isostatically pressed Inconel 625
【24h】

The role of powder atomisation route on the microstructure and mechanical properties of hot isostatically pressed Inconel 625

机译：粉末雾化途径对热等静压的微观结构和力学性能的作用625

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 powder's characteristics and its purity can greatly influence the properties of nickel (Ni)-base superalloys parts produced by near net-shape powder metallurgy hot isostatic pressing (NNS PM HIP) manufacturing process. In this study, Inconel 625 (IN625) powders produced using four different atomisation routes, argon, nitrogen, plasma and water atomisation (AGA, NGA, PA, WA, respectively) were investigated. The first section of this study is focused on the determination of powder characteristics which includes chemical composition, particle size distribution (PSD), tap density and powder's cross-section analysis, whereas the second section is about hot isostatic pressing (HIPping) of the four powder types and to assess the impact of the powder characteristics on the microstructure-property development after HIPping. To gain an understanding of the surface chemistry of the powders, X-ray photoelectron spectroscopy (XPS) analysis were carried out on the surface of the four powders. The latter analysis highlighted fundamental differences on the powder's surface, especially the differences in the surface and near-surface distribution of the alloying elements i.e. C, O, Cr, Mo and Nb present in the alloy chemistry. The micrographs of the four IN625 hot isostatically pressed (HIPped) powders revealed a fully dense microstructure with the presence of prior particle boundaries (PPBs). The atomisation route greatly impacted the nature and amount of PPBs, as well as on the fractions and sizes of oxides, carbides, oxycarbides and oxy-carbonitrides precipitates. WA showed the most severe presence of PPBs, followed by NGA, AGA and lastly PA. The powder quality has a greater impact on the mechanical properties of as-HIPped materials, especially on ductility. Overall, PA HIPped IN625 possessed the optimum balance between tensile strength, ductility and Charpy impact properties once compared to the others and match the properties to wrought IN625 material.
机译：粉末的特性及其纯度可以大大影响通过近净形粉末冶金热等静压（NNS PM HIP）制造方法产生的镍（Ni）-Base超合金部件的性能。在该研究中，研究了使用四种不同雾化途径，氩，氮，血浆和水雾化（分别）产生的625（IN625）粉末（分别分别产生AGA，NGA，PA，WA。本研究的第一部分重点是粉末特性的测定，包括化学成分，粒度分布（PSD），敲击密度和粉末的横截面分析，而第二部分是关于四个的热等静压（覆盖）粉末类型并评估粉末特性对铰接后微观结构 - 性能发育的影响。为了了解粉末表面化学的理解，在四个粉末的表面上进行X射线光电子体光谱（XPS）分析。后一种分析突出了粉末表面的基本差异，特别是合金元素的表面和近表面分布的差异，即合金化学中的C，O，Cr，Mo和Nb。四个IN625热等静压（臀部）粉末的显微照片显示出具有现有颗粒边界（PPBS）的存在全致密的微观结构。雾化途径极大地影响了PPBS的性质和量，以及氧化物，碳化物，含氧氧化物和氧氮化物的级分和尺寸。 WA显示PPBS的最严重存在，其次是NGA，AGA和最后PA。粉末质量对药物的机械性能产生更大的影响，特别是在延展性上。总体而言，PA撰写IN625具有抗拉强度，延展性和夏比冲击性能之间的最佳平衡，并与其他相比匹配，并将其性能与IN625材料相匹配。

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