+高级检索
氩气雾化制粉FGH97高温合金组织和性能研究
DOI:
作者:
作者单位:

深圳市万泽中南研究院有限公司

作者简介:

通讯作者:

中图分类号:

TG146.1+5

基金项目:

广东省珠江人才计划项目和深圳市科技创新委员会项目(项目号KQTD2015032716463668)


Study on Microstructure and Properties of Argon Atomization FGH97 P/M Superalloy
Author:
Affiliation:

Shenzhen Wedge Central South Research Institute Co,Ltd

Fund Project:

Guangdong Province Pearl River Talent Plan Project and Shenzhen Science and Technology Innovation Commission Project (project no. KQTD2015032716463668)

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    利用扫描电子显微镜、金相显微镜等研究了氩气雾化制粉(Argon Atomization,AA )+热等静压(Hot Isothermal Pressing ,HIP)的FGH97合金显微组织、夹杂物、原始颗粒边界(Prior Particle Boundary,PPB)、热诱导孔洞(Thermally induced porosity,TIP)等冶金缺陷,统计分析了室温、650℃、750℃拉伸性能、650℃/980MPa持久性能及650℃低周疲劳寿命。试验结果表明:AA + HIP +热处理制备的FGH97材料晶粒度为ASTM8-9级,未发现连续网状的PPB,存在极少量的TIP。晶内γ′多数为正方形,尺寸约为200nm,晶界γ′为1.5~2 μm的长方形,未见粗大γ′相及粗大碳化物。650℃/980MPa 持久时间均值449 h。650℃低周疲劳寿命最大值258909周次,均值达到190014周次。室温、650℃、750℃拉伸性能、650℃/980MPa持久性能以及650℃低周疲劳寿命均满足FGH97合金技术要求。

    Abstract:

    Characteristics of microstructure, inclusions, Prior Particle Boundary , Thermally Induced Porosity , defects and several large size disk′s tensile properties, stress rupture life ,low cycle fatigue of a P/M superalloy FGH97, which was made by Argon Atomization (AA) + Hot Isostatic Pressing (HIP)process, were investigated. The results reveal that the grain size of FGH97 material prepared by AA + HIP +Heat Treatment is ASTM 8-9. No continuous network PPB is found, and there is a very small amount of TIP. The size of mostly square γ' is about 200 nm, and grain boundary γ' is 1.5 to 2 μm. No coarse γ' phase and coarse carbides are observed. The average stress rupture time of 650 °C / 980MPa is 449 h. The maximum low cycle fatigue life is 258,909 cycles at 650 ℃, the average cycle reaches 19,014 cycles. The room temperature, 650℃, 750 ℃tensile properties, stress reputure performance at 650 ℃ / 980 MPa and the fracture life of Low cycle fatigue at 650 ℃ meet the FGH97 alloy technical requirements.

    参考文献
    相似文献
    引证文献
引用本文

杨金龙,朱晓闽,谭建均,熊江英.氩气雾化制粉FGH97高温合金组织和性能研究[J].稀有金属材料与工程,2019,48(12):4093~4100.[Yang Jinlong, Zhu Xiaomin, Tan Jianjun, Xiong Jiangying. Study on Microstructure and Properties of Argon Atomization FGH97 P/M Superalloy[J]. Rare Metal Materials and Engineering,2019,48(12):4093~4100.]
DOI:[doi]

复制
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2018-09-06
  • 最后修改日期:2018-11-02
  • 录用日期:2018-11-08
  • 在线发布日期: 2020-01-07
  • 出版日期: