引用本文:许欣欣,贺文雄,秦晋,周利,赵洪运,崔令江.振动加速度对等离子增材制造Fe314合金应力变形和组织性能的影响[J].中国表面工程,2019,32(5):127~135
XU Xinxin,HE Wenxiong,QIN Jin,ZHOU Li,ZHAO Hongyun,CUI Lingjiang.Effects of Vibration Acceleration on Stress Deformation, Microstructures and Properties of Fe314 Alloy Fabricated by Plasma Additive Manufacturing[J].China Surface Engineering,2019,32(5):127~135
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振动加速度对等离子增材制造Fe314合金应力变形和组织性能的影响
许欣欣1, 贺文雄1, 秦晋1, 周利1,2, 赵洪运1, 崔令江1
1.哈尔滨工业大学(威海) 山东省特种焊接技术重点实验室, 威海 264209;2.哈尔滨工业大学 先进焊接与连接国家重点实验室, 哈尔滨 150001
摘要:
在等离子堆焊Fe314自熔性合金粉末增材制造过程中施加振动，利用盲孔法、扫描电子显微镜、拉伸试验等表征方法，对比分析了施加振动后成形件应力变形和组织性能的变化情况。结果表明，施加振动后，虽然对薄壁件和精细结构的成形是不利的，但是成形试样的残余变形和残余应力都有一定程度的改善，其中4 m/s2的振动加速度对残余应力的降低效果最明显，6 m/s2的振动加速度对残余变形的降低效果最佳；施加振动后，成形试样的组织发生明显的细化，拉伸性能得到提升，其中4 m/s2的振动加速度对枝晶的细化效果最优且对材料的综合力学性能提升最佳。
关键词:  振动  等离子  增材制造  Fe314合金
DOI：10.11933/j.issn.1007-9289.20190415001
分类号:TG174.44
基金项目:
Effects of Vibration Acceleration on Stress Deformation, Microstructures and Properties of Fe314 Alloy Fabricated by Plasma Additive Manufacturing
XU Xinxin1, HE Wenxiong1, QIN Jin1, ZHOU Li1,2, ZHAO Hongyun1, CUI Lingjiang1
1.Shandong Provincial Key Laboratory of Special Welding Technology, Harbin Institute of Technology at Weihai, Weihai 264209, China;2.State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China
Abstract:
Vibration was applied during plasma surfacing welding of Fe314 self-fluxing alloy powder additive manufacturing process. The changes of microstructures, properties, stress and deformation of the formed parts subjecting to vibration were analyzed and compared by means of blind hole method, scanning electron microscope, tension test and so on. The results show that it is detrimental to the formation of thin-walled parts and fine structures after the vibration is applied, however, the residual deformation and residual stress of the formed sample are improved to some extent. When the vibration acceleration is 4 m/s2 and 6 m/s2, the residual stress and deformation can be obviously reduced. After vibration, the microstructure of the formed samples is significantly refined and the tensile properties are improved. When the vibration acceleration is 4 m/s2, the dendrites are significantly refined and the comprehensive mechanical properties are distinctly improved.
Key words:  vibration  plasma  additive manufacturing  Fe314 alloy
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