杨军,曹博涛,向长淑,樊小蒲,葛正浩,王晓峰

• 1:陕西科技大学机电工程学院
• 2:西安赛隆金属材料有限责任公司

摘要(Abstract)：

首先采用电渣重熔法熔炼316H奥氏体不锈钢母合金,随后采用等离子旋转电极雾化(PREP)法制备了球形316H奥氏体不锈钢粉末。利用氧氮分析仪、扫描电镜(SEM)、X射线衍射仪(XRD)、霍尔流速计和激光粒度分布仪等研究了粉末的氧含量、形貌、相结构、流动性、松装密度、振实密度及粒度分布。结果表明:电渣重熔制备的316H奥氏体不锈钢母合金全氧含量为20×10~(-6),铸锭成分均匀;等离子旋转电极雾化法制备的316H奥氏体不锈钢粉末全氧含量为70×10~(-6),粉末粒度呈现双峰分布,细粉收得率高,粒径为15～150μm的粉末占比近80%,粉末粒径分布范围广、球形度高、卫星粉少。粉末表面基本为胞状晶,截面为均匀的枝晶组织,为单一的γ-Fe相结构。制备态粉末的霍尔流速、松装密度和振实密度分别为14.83 s·50~(-1) g~(-1)、4.725 g·cm~(-3)和5.401 g·cm~(-3)。粗粉和细粉质量分数各占一半时,粉末的霍尔流速为12.91 s·50~(-1) g~(-1),小于初始粉末的霍尔流速,提高了粉末的流动性能。长时间的真空储存能降低粉末的带电性能,进而降低粉末颗粒之间排斥作用,可进一步提高粉末流动性。粗、细粉之比为7:3时,粉末的填充性能最好,填充率高达70.6%。

关键词(KeyWords)： 316H奥氏体不锈钢粉末;电渣重熔;等离子旋转电极法;粉末性能

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(52174320);; 陕西省重点研发计划项目(2020GY-109)

作者(Author): 杨军,曹博涛,向长淑,樊小蒲,葛正浩,王晓峰

DOI: 10.13289/j.issn.1009-6264.2021-0180

参考文献(References)：

• [1] 高正江，周香林，李景昊，等.高性能球形金属粉末制备技术进展[J].热喷涂技术，2018,10(3):1-9.GAO Zheng-jiang,ZHOU Xiang-lin,LI Jing-hao,et al.A review:High-performance spherical metal powder preparation methods[J].Thermal Spray Technology,2018,10(3):1-9.
• [2] 常坤，梁恩泉，张韧，等.金属材料增材制造及其在民用航空领域的应用研究现状[J].材料导报，2021,35(3):3176-3182.CHANG Kun,LIANG En-quan,ZHANG Ren,et al.Status of metal additive manufacturing and its application research in the field of civil aviation[J].Materials Reports,2021,35(3):3176-3182.
• [3] Herzog D,Seyda V,Wycisk E,et al.Additive manufacturing of metals[J].Acta Materialia,2016,117:371-392.
• [4] Cooke S,Ahmadi K,Willerth S,et al.Metal additive manufacturing:Technology,metallurgy and modelling[J].Journal of Manufacturing Processes,2020,57:978-1003.
• [5] Haghdadi N,Laleh M,Moyle M,et al.Additive manufacturing of steels:A review of achievements and challenges[J].Journal of Materials Science,2020,56(1):64-107.
• [6] 李昂，刘雪峰，俞波，等.金属增材制造技术的关键因素及发展方向[J].工程科学学报，2019,41(2):159-173.LI Ang,LIU Xue-feng,YU Bo,et al.Key factors and developmental directions with regard to metal additive manufacturing[J].Chinese Journal of Engineering,2019,41(2):159-173.
• [7] Grell WA,Solis-Ramos E,Clark E,et al.Effect of powder oxidation on the impact toughness of electron beam melting Ti-6Al-4V[J].Additive Manufacturing,2017,17:123-134.
• [8] 汤慧萍，王建，逯圣路，等.电子束选区熔化成形技术研究进展[J].中国材料进展，2015,34(3):225-235.TANG Hui-ping,WANG Jian,LU Sheng-lu,et al.Research progress in selective electron beam melting[J].Materials China,2015,34(3):225-235.
• [9] Li S,Hassanin H,Attallah M M,et al.The development of TiNi-based negative Poisson’s ratio structure using selective laser melting[J].Acta Materialia,2016,105:75-83.
• [10] 许德，高华兵，董涛，等.增材制造用金属粉末研究进展[J].中国有色金属学报，2021,31(2):245-257.XU De,GAO Hua-bing,DONG Tao,et al.Research progress of metal powder for additive manufacturing[J].The Chinese Journal of Nonferrous Metals,2021,31(2):245-257.
• [11] 杨全占，魏彦鹏，高鹏，等.金属增材制造技术及其专用材料研究进展[J].材料导报，2016,30(S1):107-111.YANG Quan-zhan,WEI Yan-peng,GAO Peng,et al.Research progress of metal additive manufacturing technologies and related materials[J].Materials Reports,2016,30(S1):107-111.
• [12] 乐国敏，李强，董鲜峰，等.适用于金属增材制造的球形粉体制备技术[J].稀有金属材料与工程，2017,46(4):1162-1168.LE Guo-min,LI Qiang,DONG Xian-feng,et al.Fabrication techniques of spherical-shaped metal powders suitable for additive manufacturing[J].Rare Metal Materials and Engineering,2017,46(4):1162-1168.
• [13] Chen G,Zhao S Y,Tan P,et al.A comparative study of Ti-6Al-4V powders for additive manufacturing by gas atomization,plasma rotating electrode process and plasma atomization[J].Powder Technology,2018,333:38-46.
• [14] Tang J J,Nie Y,Qian L,et al.Characteristics and atomization behavior of Ti-6Al-4V powder produced by plasma rotating electrode process[J].Advanced Powder Technology,2019,30(10):2330-2337.
• [15] 崔波，朱权利，陈进，等.真空氮气雾化法制备3D打印Cu6AlNiSnInCe仿金粉末及表征[J].粉末冶金材料科学与工程，2019,24(1):1-7.CUI Bo,ZHU Quan-li,CHEN Jin,et al.Preparation and characterization of Cu6AlNiSnInCe imitation-gold powder by vacuum nitrogen gas atomization for 3D printing[J].Materials Science and Engineering of Powder Metallurgy,2019,24(1):1-7.
• [16] 李孟臻，李宝宽，黄雪驰.旋转电极电渣重熔过程熔滴滴落及熔池形状的模拟[J].钢铁研究学报，2021,33(2):110-118.LI Meng-zhen,LI Bao-kuan,HUANG Xue-chi.Numerical simulation of droplet behavior and pool shape in ESR with rotating electrode[J].Journal of Iron and Steel Research,2021,33(2):110-118.
• [17] 刘昌奎，张佳庆，陈贺贺，等.粉末尺寸和氧含量对FGH96合金中PPB形成的影响[J].兵器材料科学与工程，2018,41(3):33-38.LIU Chang-kui,ZHANG Jia-qing,CHEN He-he,et al.Effect of particle size and oxygen content on formation of PPB in FGH96 P/M superalloys[J].Ordnance Material Science and Engineering,2018,41(3):33-38.
• [18] Pingali K C,Hammond S V,Muzzio F J,et al.Use of a static eliminator to improve powder flow[J].International Journal of Pharmaceutics,2009,369(1/2):2-4.

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