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.]
氩气雾化制粉FGH97高温合金组织和性能研究
投稿时间:2018-09-06  修订日期:2018-11-02
中文关键词:  FGH97粉末冶金高温合金  氩气雾化制粉  热等静压  组织  性能
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)
中文摘要:
      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。
Study on Microstructure and Properties of Argon Atomization FGH97 P/M Superalloy
英文关键词:FGH97 P/M superalloy  Argon Atomization  Hot Isostatic Pressure  Microstructure  Properties
英文摘要:
      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.
作者单位E-mail
杨金龙 深圳市万泽中南研究院有限公司 yangjinlong0419@163.com 
朱晓闽 深圳市万泽中南研究院有限公司  
谭建均 深圳市万泽中南研究院有限公司  
熊江英 深圳市万泽中南研究院有限公司  
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