Name: Yulong Li Title: Professor

Email: liyulong@ncu.edu.cn

Supervisor Type: Master's/Ph.D. Supervisor

Main Courses: Materials and Processes of Welding and Joining

Personal Website:

Research Directions

The research focuses on welding processes and equipments, additive manufacturing, advanced material design/preparation, and fiber optic sensing. Specifically including:

1. Interface design, welding metallurgy, and microstructure-property control in dissimilar material joining, along with related processes and equipment. This includes but is not limited to laser welding, electron beam welding, vacuum brazing, and more; advanced soldering materials, brazing materials preparation, and processes optimization; as well as wetting and spreading for the aforementioned processes.

2. Additive manufacturing technology based on welding heat sources, including process optimization for powder bed fusion, powder feeding, and arc additive manufacturing, as well as material design and preparation.

3. Fiber optic sensing and smart structures, including but not limited to sensing technologies such as FBG, LPFG, and macro-bend fibers.

Education Background

September 1997–October 2006, Harbin Institute of Technology, Materials Processing Engineering (Bachelor's, Master's, and Doctoral Degrees), Ph.D

Work Experience

July 2006 - Present, Nanchang University, School of Advanced Manufacturing, Lecturer, Associate Professor, Professor (since December 2013) / PhD Supervisor (since June 2015)

Postdoctoral Researcher at the University of Kentucky (Co-Supervisor: DP Sekulic, 2010-2011), Visiting Scholar at the University of Maryland, College Park (Co-Professor: Michael Pecht, 2019-2020)

Academic Appointments

Member and Director of the Committee of the Chinese Welding Society; Executive Committee Member of the Youth Working Group of the Chinese Welding Society; Member of the Brazing Special Committee; Vice Chairman of Jiangxi Welding Society; Expert in project evaluation for the Ministry of Science and Technology, reviewer for the Ministry of Education's science and technology awards, and reviewer for multiple provincial and municipal science and technology projects and awards; Youth Editorial Board Member of the Journal of Photonics, Standing Committee Member of the Youth Editorial Board of the Welding Editorial Department, and Editorial Board Member of the Journal of Welding.

Personal Honors

Has won the honorary titles of Excellent Doctoral Dissertation, Excellent Master's Thesis Supervisor, and "Double Top Ten" Ph.D. Student Supervisor in Jiangxi Province multiple times;

Received the Second Prize of Natural Science in Jiangxi Province (ranked first individually in 2022) and the Second Prize of Science and Technology in Shanghai (ranked second individually in 2022);

High end leading talents under the "Double Thousand Plan" in Jiangxi Province (2020), innovative and entrepreneurial talents in Nantong City, Jiangsu Province (2021), academic leaders in major disciplines in Jiangxi Province (2018), and the New Century Hundred, Thousand, and Ten Thousand Talents Project in Jiangxi Province (2010).

Major Achievements

Participated in the completion of one national 973 preliminary special project, presided over five national natural science foundation general, regional, and youth projects, presided over the Jiangxi Province Double Thousand Plan High end Leading Talent Project, Jiangxi Province Major Discipline Academic and Technical Leaders Project, National Defense Pre research Field Fund, Central Leading Local Key Project, Jiangxi Province Outstanding Youth Fund and Key Projects. Selected as a high-end leading talent in the "Double Thousand Plan" of Jiangxi Province (2020), an innovative and entrepreneurial talent in Nantong City, Jiangsu Province (2021), a leading academic figure in major disciplines in Jiangxi Province (2018), a member of the Jiangxi Province New Century Hundred, Thousand, and Ten Thousand Talents Project (2010), a young outstanding talent in Jiangxi Province (Young Scientist - Jinggang Star 2010), and a middle-aged and young backbone teacher in Jiangxi Province; Ganjiang Distinguished Professor (2015) and Xiangzhang Distinguished Professor (2021) at Nanchang University. Published over 60 SCI papers and granted more than 10 invention patents as the first author/corresponding author in journals such as ADDIT MANUF, J MATER SCI TECHNOL, J MATER PROCESS TECH, and J ALLOY COMPD. In 2021, he guided students to win two gold medals and one silver medal in the 7th China International "Internet plus" College Students Innovation and Entrepreneurship Competition, the first prize of Heilongjiang University Science and Technology Award in 2008, and the first prize of Jiangxi University Science and Technology Achievement in 2013. The research team won the second prize of Jiangxi Provincial Natural Science Award (2022, personal ranking first) and the second prize of Shanghai Science and Technology Award (2022, personal ranking second); The teaching team won the first prize for undergraduate teaching achievements (2022) and the second prize for graduate teaching (2023) at Nanchang University (ranked first individually). Several doctoral and master's students under guidance have been awarded the title of "Top Ten Graduate Students" and the Provincial Excellent Graduate Thesis Award in Jiangxi Province.

Projects hosted in recent years:

1. In situ reaction of Ag/Ti, evolution law of compounds, and formation mechanism of porous structure on titanium alloy surface - National Natural Science Foundation of China, General Project (52171036)

2. Characterization and Dynamic Modeling of Cross scale Continuous Liquid Phase Characteristics of Silver/Titanium Brazing System - National Natural Science Foundation of China, Regional Project (52065043)

3. Phase Field Analysis Modeling and Experimentation of Wetting and Spreading Processes in Typical Metal/Metal Systems - National Natural Science Foundation of China, Region (51665038)

4. Real time positioning and monitoring of temperature and stress during the formation and service process of brazed joints based on fiber optic sensing - National Natural Science Foundation of China, regional project (51265035)

5. Manufacturing Method and Thermal Pressure Sensing Characteristics of Fiber Optic Intelligent Metal Structure Brazing - National Natural Science Foundation of China, Youth Project (50905082)

6. Military Commission National Defense Laboratory Fund: Diamond xxx/Kovar xxx Brazing Sealing (2021XXX)

7. Central Guidance for Local Key Projects: Printing and Precision Welding of TiB2 Ti Composite Materials (20221ZDH04054)

8. Precision Welding, Packaging, Positioning Installation, and Thermal Pressure Sensing Testing and Modeling of Hongwan Fiber Optic Sensor Components - Jiangxi Province Double Thousand High end Talent Project (jxsq2019201048)

9. Real time monitoring of internal temperature strain during the formation and in-service process of dissimilar metal brazed joints - funded by academic and technical leaders of major disciplines in Jiangxi Province (20182BCB22001)

10. Formation and mechanical strengthening mechanism of diffusion strengthened soft and tough phases at the interface of steel/aluminum laser brazed joints - Jiangxi Outstanding Youth Fund Project (2018ACB21015)