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大型 GH4169 合金锻造棒组织缺陷分析
Defect Analysis of Large GH4169 Alloy Forged Bar
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- DOI:
- 作者:
- 董兆伟 1 ，徐奎奎 1 ，孙立辉 1 ，刘 猛 2 ，王 杨 3 ，董中奇 3
DONG Zhaowei1 , XU Kuikui1 , SUN Lihui1 , LIU Meng2 , WANG Yang3 , DONG Zhongqi3
- 作者单位:
- 1.河北经贸大学 信息技术学院，河北 石家庄 050061；2.中航上大高温合金材料有限公司 技术中心，河北 清河 054800； 3.河北工业职业技术大学 材料工程系，河北 石家庄 050000
1. School of Information Technology, Hebei University of Economics and Technology, Shijiazhuang 050061, China; 2. Avic Shangda Superalloys Co.,Ltd., Technology Center, Qinghe 054800, China; 3. Department of Material Engineering, Hebei Vocational and Technical University of Technology, Shijiazhuang 050000, China
- 关键词:
- GH4169 合金；晶粒细化；锻造；热处理
GH4169alloy; grain refinement; forging; heat treatment
- 摘要:
- 采用真空感应-气氛保护-真空自耗“三联冶炼技术”制备了 GH4169 合金，经锻造和标准热处理后，采用扫
描电镜和 X 射线衍射分析 GH4169 合金大棒材的组织缺陷， 统计分析并模拟了组织缺陷的变化规律。 结果表明，
GH4169 合金锻件晶粒度细小，含有 δ 相、γ′相、γ苁相、MC 碳化物相，从棒材的心部到边缘合金中 MC 碳化物相峰高有
先减小后增加的趋势；棒材中心小缺陷分布密集，边缘缺陷稀疏且以大缺陷为主；靠近最外层，大缺陷分布也很密集。
GH4169 alloy was prepared by vacuum induction, atmosphere protection-vacuum self-consumption “triple smelting technology”. After forging and standard heat treatment, the microstructure defects of GH4169 alloy bar were analyzed by scanning electron microscope (SEM) and X-ray diffraction (XRD), and the variation law of microstructure defects was statistically analyzed and simulated. The results show that the grain size of GH4169 alloy forgings is fine, including δ-phase, γ′-phase, γ苁-phase and MC carbide phase. The peak height of MC carbide phase decreases first and then increases from the core to the edge of the alloy. The distribution of small defects in the center of bar is dense, while the defects in the edge are sparse and the major defects are dominant. Near the outermost layer, the distribution of large defects is also very dense.