电焊机2024，Vol.54Issue(2)：30-36,7.DOI:10.7512/j.issn.1001-2303.2024.02.05
电弧增材制造GH4169合金均匀化热处理组织特征、力学性能和蠕变性能研究
Study of Microstructure,Mechanical Properties,and Creep Properties of GH4169 Alloy After Homogenization Heat Treatment Using Arc Additive Manufacturing
司福贵 1孙德志 1徐亚坤 1徐英翠 1程浩杰 1刘志勇 2夏长庚 1王孟志 1刘安辉1
作者信息
- 1. 中国重型汽车集团有限公司 汽车研究总院,山东 济南 250101
- 2. 中国重型汽车集团有限公司,山东 济南 250101
- 折叠
摘要
Abstract
In order to investigate the microstructure characteristics of arc additive manufacturing GH4169 alloy during heat treatment,the study was conducted on the effects of different heat treatment processes on the microstructure and phases of GH4169 alloy,in order to determine the optimal homogenization heat treatment process.The effect of different homogeniza-tion heat treatment temperature on the microstructure and mechanical properties of the specimen was studied by using arc fuse additive manufacturing technology.The results show that with the increase of homogenization temperature,the Laves phase gradually dissolves to complete dissolution and the sample structure gradually became uniform.When the homogeni-zation temperature is 1 100℃,the Laves phase is completely dissolved,the sample organization of the horizontal and verti-cal directions are equiaxed crystals,and eliminating organizational anisotropy.After homogenization treated at 1 100℃and solid solution +double aging heat treatment,the strength of the material was significantly improved,increased by 50%com-pared to the deposited state,and creep performance of the material is much higher than the forging standard.Studies have shown that the mechanical properties and creep properties of GH4169 alloy can be effectively improved by controlling the homogenization heat treatment temperature and subsequent heat treatment process.It is of great significance to optimize the process parameters of arc additive manufacturing GH4169 alloy and improve its comprehensive performance.关键词
电弧熔丝增材制造/GH4169高温合金/均匀化热处理/微观组织/力学性能Key words
arc wire additive manufacturing/GH4169 superalloy/homogenization heat treatment/microstructure/mechani-cal properties分类
矿业与冶金引用本文复制引用
司福贵,孙德志,徐亚坤,徐英翠,程浩杰,刘志勇,夏长庚,王孟志,刘安辉..电弧增材制造GH4169合金均匀化热处理组织特征、力学性能和蠕变性能研究[J].电焊机,2024,54(2):30-36,7.
