Niu Fangyong
Associate Professor Supervisor of Doctorate Candidates Supervisor of Master's Candidates
Gender:Male
Alma Mater:大连理工大学
Degree:Doctoral Degree
School/Department:机械工程学院
Discipline:Mechanical Manufacture and Automation
Business Address:机械工程学院新大楼5031
Contact Information:15104053320
E-Mail:niufangyong@dlut.edu.cn
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Date of Publication:2022-10-10
Journal:中国激光
Affiliation of Author(s):机械工程学院
Volume:41
Issue:7
Page Number:0703012
ISSN No.:0258-7025
Abstract:Thermal stress caused by oversized temperature gradient in the process
of laser cladding ceramic coating on metal substrate usually makes the
coating cracked.Reducing the temperature gradient of the laser cladding
process can reduce the thermal stress to a certain degree to suppress
the generation of cracks.Through numerical simulation of temperature
distribution during laser cladding Al_2O_3 coating on Ti6Al4V
substrate,a method of providing preheating and slow-cooling using top
hat laser beam is proposed.Temperature distribution and temperature
gradient of the coating with preheating and slow-cooling are discussed
by changing the spot size and power density of the top hat assistant
laser beam.The results show that there is a significant feature of
preheating and slow-cooling during the cladding process,the top hat
assistant laser beam can reduce the temperature gradient effectively.The
temperature gradient of the plastic point(1533 K)of Al_2O_3reduces while
the preheating and slow-cooling temperature raises.But the temperature
gradient of the plastic point will rebound when the preheating and
slow-cooling temperature is near the plastic point.Higher preheating and
slow-cooling temperature make the cladding process better,but
temperature around the plastic point should be avoided.
Note:新增回溯数据
牛方勇，大连理工大学副教授，博士生导师，主要研究方向为增材制造与激光制造。高性能制造研究所副所长，高性能精密制造全国重点实验室、全国高校黄大年式教师团队青年骨干。担任辽宁省机械工程学会增材制造分会理事会副秘书长；中国机械工程学会极端制造分会、增材制造技术分会、中国有色金属学会增材制造分会委员；《International Journal of Extreme Manufacturing》、《机械工程学报》、《Additive Manufacturing Frontiers》等知名期刊青年编委。主持/参研国家级、省部级项目20余项，参编ASM Handbook增材制造系列丛书1部，发表SCI论文150余篇（入选ESI高被引3篇、封面封底论文4篇，H因子35），入选2025年度斯坦福大学TOP 2%科学家榜单。授权国家发明专利30余项，国际专利1项。获得产学研合作创新成果奖二等奖1项、中国循环经济协会科技进步二等奖1项、日内瓦国际发明金奖1项、辽宁省自然科学学术成果一等奖1项。
研究方向：
（1）难加工材料激光加工/激光辅助加工
（2）高附加值金属构件激光再制造
（3）增材制造形性控制原理与方法
课题组毕业生就业去向：
沈飞、黎明、航天科技集团、中海油、华为、比亚迪、理想、广东省科学院、广西大学等知名单位。
主持项目：
（1）部委重点项目课题，XXX多目标优化设计，3XX.00万，在研，主持
（2）部委基金项目，XXX增材制造高温钛合金组织性能调控方法，1XX.00万，在研，主持
（3）辽宁省科技重大专项课题，基于多参量检测与外场主动性介入的形性调控方法，250万，在研，主持
（4）重点研发计划子课题，激光复合能场调控技术及加工工艺方法研究，60万，在研，主持
（5）辽宁省科技计划联合计划项目，大型压缩机齿轮断齿激光再制造技术应用研究，30万，在研，主持
（6）企业委托项目，白龙爆破阀项目镀铬工艺，335万，在研，主持
（7）企业委托项目，陆丰爆破阀项目镀铬工艺，335万，在研，主持
（8）企业委托项目，主蒸汽隔离阀驱动装置（超薄致密硬铬（DDH）镀层）工艺研究，100.5万，在研，主持
（9）企业委托项目，PV14气动截止阀气缸（银靶离子镀层）工艺研究，102.3万，在研，主持
（10）重点研发计划子课题，大型薄壁构件激光焊接缺陷抑制与变形控制工艺，91万，结题，主持
（11）国自然青年基金项目，原位自生Al2O3柱晶增韧低膨胀莫来石陶瓷直接增材制造，25万，结题，主持
（12）中国博士后科学基金特助项目，熔体自生Al2O3柱晶原位增韧共晶陶瓷结构激光近净成形，15万，结题，主持
（13）中国博士后科学基金面上项目，SiC晶须增韧Al2O3基共晶陶瓷结构直接增材制造技术研究，8万，结题，主持
（14）企业委托项目，爆破阀（银靶离子镀层）工艺研究，86万，结题，主持
（15）企业委托项目，爆破阀（超薄致密硬铬（DDH）镀层）工艺研究，52万，结题，主持
（16）企业委托项目，梯度复合材料超硬刀具研发，40万，结题，主持
（17）企业委托项目，数控机床主轴锥孔激光熔覆再制造，20万，结题，主持
发表论文：
[1] Yunfei Huang, Dongjiang Wu, Dake Zhao, Fangyong Niu*, Guangyi Ma. Investigation of melt-growth alumina/ aluminum titanate composite ceramics prepared by directed energy deposition[J]. International Journal of Extreme Manufacturing, 2021, 3(3):035101. (IF: 21.3)
[2] Dake Zhao, Dongjiang Wu, Jing Shi, Fangyong Niu*, Guangyi Ma. Microstructure and mechanical properties of melt-grown alumina-mullite/glass composites fabricated by directed laser deposition[J]. Journal of Advanced Ceramics, 2022, 11(1): 75-93. (IF: 16.6)
[3] Yunfei Huang，Dongjiang Wu，Dake Zhao，Fangyong Niu*，Heng Zhang，Shuai Yan，Guangyi Ma.Process optimization of melt growth alumina/aluminum titanate composites directed energy deposition: Effects of scanning speed[J]. Additive Manufacturing, 2020, 35:101210. (IF: 11.1)
[4] Dongjiang Wu, Xintong Cai, Xin Qin, Feng Yang, Renke Kang, Zhigang Dong, Guangyi Ma, Yan Bao, Fangyong Niu*. Laser Ablation Behavior and Mechanism of Cf/C-SiC Composites under Different Laser Energy Densities[J]. Composites Part B: Engineering, 2024, 276: 111359. (IF: 14.2)
[5] Fangyong Niu*, Cunxu Li, Lu Li, Mingze Xu, Yunbo Hao, Kai Zhao, Huanyue Zhang, Guoping Liu, Guangyi Ma, Dongjiang Wu. Microstructure and mechanical properties of hammer-forging assisted wire-arc directed energy deposition AZ91 alloy[J]. Virtual and Physical Prototyping, 2024, 19(1): e2373378. (IF: 8.8)
[6] Dongjiang Wu, Yunfei Huang, Fangyong Niu*, Guangyi Ma, Shuai Yan, Chaojiang Li, Jun Ding. Effects of TiO2 doping on microstructure and properties of directed laser deposition alumina/aluminum titanate composites[J]. Virtual and Physical Prototyping, 2019, 14(4): 371-381. (IF: 8.8)
[7] Fangyong Niu*, Qihao Zhang, Xintong Cai, Kang Ding, Zhigang Dong, Yan Bao, Renke Kang, Jinbo Niu, Dongjiang Wu. Mechanistic investigation of mechanical damage evolution in Cf/SiC composites via laser ablation-assisted ultrasonic layer-specific grinding[J]. Journal of Materials Processing Technology, 2025, 342: 118948. (IF: 7.5)
[8] Dongjiang Wu, Chengshui Yu, Qiyong Wang, Fangyong Niu*, Guangyi Ma, Hong Wang, Cong Zhou, Bi Zhang. Synchronous-Hammer-Forging-Assisted Laser Directed Energy Deposition Additive Manufacturing of High-Performance 316L Samples[J]. Journal of Materials Processing Technology, 2022, 307:117695. (IF: 7.5)
[9] Fangyong Niu*, Zheng Li, Xintong Cai, Qihao Zhang, Liangliang Li, Jinbo Niu, Renke Kang, Zhigang Dong, Yan Bao, Dongjiang Wu, Guangyi Ma. High-precision machining of Cf/C-SiC ceramic matrix composites by innovative laser assisted ultrasonic grinding[J]. Composite Structures, 2025, 370: 119407. (IF: 7.1)
[10] Xintong Cai , Fangyong Niu*, Xin Qin, Jinbo Niu, Renke Kang, Zhigang Dong, Yan Bao, Dongjiang Wu, Guangyi Ma, Effects of Laser Energy Uniformization via Static Beam Shaping on Ablation Behavior and Mechanism of SiCf/SiC Composites[J]. Journal of Materials Processing Technology, 2025. (IF: 7.5)
课题组欢迎优秀博士生、博士后加入！
