研究方向：(1) 先进高强金属构件焊接制造；(2) 高强轻质合金构件固相增材制造；(3) 金属基复合材料构件成形制造；(4) 大差异性异质构件增材制造

科研项目：主持国家自然科学基金面上、青年项目、中国博士后基金面上项目、全国重点实验室开放课题、南京留学人员科技创新择优资助重点项目、企业委托课题等项目十余项。

研究成果：在机械制造、材料加工、焊接和金属材料等相关领域的国际学术期刊发表SCI论文50余篇，其中第一及通讯作者SCI检索论文30余篇，申请/授权发明专利20余件，含美国发明专利1件。

获奖情况：(1) 中国技术市场协会金桥奖二等奖（排1），2024；(2) 中国材料研究学会科学技术二等奖（排2），2024；(3) 中国科技产业化促进会科学技术二等奖（排2），2024；(4) 东南大学至善青年学者，2024；(5) Young Researcher Award in Joining and Welding，2022；(6) 江苏省“双创博士”，2021；(7) 山东省高等学校科学技术一等奖（排3），2020；(8) Acta Student Award，2016；(9) STWJ Best Paper Prize，2016

学术兼职：中国机械工程学会焊接分会计算机辅助焊接工程分委会委员、有色金属学会先进焊接与连接分会委员、《有色金属学报》中英文版青年编委、焊接杂志社青年编委等

毕业生去向：

硕士：

2025届  李文涛  联合汽车电子（无锡）

2025届  夏传超  东南大学/硕博连读

本科：

2025届  李晓博   东南大学优秀毕业生，东南大学/免研

2025届  李瑞茹   东方电气（上海）

2025届  张天缘   江苏神马电力（南通）

2024届  罗璟玥   东南大学最具影响力本科生、优秀毕业生，香港理工大学/直博

2024届  程明航   比亚迪（深圳）

2023届  张鹏宇   南航/读研

招生情况：每年计划招收博士生1名，硕士生1-2名，欢迎具有机械、材料、力学、控制等相关背景的学生报考，也欢迎有志从事科研的本科生加入！

专业文献阅读与写作(研讨)、材料力学、工程材料及成形、工程制图与制造基础专
业文献阅读与写作(研讨)

《International Journal of Mechanical Sciences》

《Materials & Design》

《International Journal of Heat and Mass Transfer》

《Journalof Materials Processing Technology》

《Journalof Manufacturing Processes》

《Materials Science and Engineering: A》

《Materials Characterization》

《Materials Chemistry and Physics》

《Weldingin the World》

《Acta Metallurgica Sinica (English Letters)》

《Vacuum》

《Chinese Journal of Mechanical Engineering》

《Transactions of Nonferrous Metals Society of China》

《机械工程学报》

《金属学报》

《焊接学报》

《Welding International》

有色金属学报中、英文版青年编委

焊接杂志社青年编委

美国矿物、金属和材料学会会员

英国材料、矿物和矿业学会会员

美国金属学会会员

日本溶接学会会员

中国焊接学会计算机辅助焊接工程分委会委员

中国有色金属学会先进连接与加工分会委员

中国机械工程学会高级会员

论文列表：

• Yao Y, Cao X, Liu X, et al. A comprehensive review of solid-state friction stir processing robots: Design, dynamics and control for enabling applications in additive manufacturing[J]. Journal of Manufacturing Processes, 2025, 149: 1151-1165.

• Raajha Y, Liu X, Ma J, et al. Friction-stir, tailor-welded blanks made from primary and recycled 6082 aluminium alloys[J]. Manufacturing Letters, 2025.

• Zhang T, Yue R, Ma X, et al. Evaluating fracture toughness distributions of laser cladding repaired hydrogenation reactors by spherical indentation tests (SITs)[J]. Theoretical and Applied Fracture Mechanics, 2025: 105013.

• Ye T, Pei X, Liu X, et al. Depth prediction of plastic vortex toward vortex flow-based friction stir additive manufacturing[J]. Journal of Manufacturing Processes, 2025, 147: 127-132.

• Tang J, Shi L, Wu C, et al. Ultraonic vibration enables the in-situ control of microstructure and mechanical properties of Al/Cu dissimilar friction stir welded joint[J]. Transactions of Materials Research, 2025: 100018.

• LUO J, LI X, LIU X, et al. Effect of tool rotation speed on microstructure and mechanical properties of Al/steel vortex flow-based friction stir lap welding[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2025, 46(2): 127-135.

• Luo J, Liu X, Sun W, et al. High-quality aluminum/steel joining via a submicron-scale amorphous interlayer fabricated by vortex flow-based friction stir lap welding[J]. Materials Characterization, 2025: 114762.

• Wang X, Wang Y, Zhang T, et al. Flash joining of C/C composite with Ag-Cu-Ti filler by spark plasma sintering: The promoting and inhibiting effects on the interfacial reactions[J]. Ceramics International, 2025, 51(8): 10169-10173.

• Liu X, Zhang P, Li W, et al. Microstructure and Mechanical Properties of TC4 Titanium Alloy Joint Fabricated By Vortex Flow-Based Friction Stir Welding[J]. Chinese Journal of Mechanical Engineering, 2024, 37(1): 159.

• Li Y, Xiao Y, Shi L, et al. Interfacial bonding mechanism in Al/Ti dissimilar friction stir welding[J]. International Journal of Mechanical Sciences, 2025, 286: 109903.

• Dai G, Xiao Y, Shi L, et al. Unveiling the influence mechanism of splat cooling on the microstructure evolution and mechanical properties of friction stir welded ZK61M magnesium alloy[J]. Materials Characterization, 2024, 218: 114555.

• Li W, Zhang T, Liu X, et al. Lap joining of Ti6Al4V titanium alloy by vortex flow-based friction stir welding[J]. Materials Characterization, 2024, 218: 114462.

• Liu S, Lei L, Gu T, et al. Analytical assessment of low‐and high‐cycle fatigue behavior of welded components considering the linear hardening model[J]. Fatigue & Fracture of Engineering Materials & Structures, 2024, 47(10): 3601-3618.

• Li Y, Zhong W, Yi H, et al. Wire-arc directed energy deposition of metal using a tendon-driven soft robotic gun: prototyping and conceptual validation[J]. Virtual and Physical Prototyping, 2024, 19(1): e2369720.

• Liu X, Lei L, Xing S, et al. A post‐processing procedure for predicting high‐and low‐cycle fatigue life of welded structures based on the master E–N curve[J]. Fatigue & Fracture of Engineering Materials & Structures, 2023, 46(9): 3387-3403.

• Liu X, Luo J, Bao W, et al. Improved Mechanical Properties of SUS304/AA5083 Dissimilar Joint by Laser Ablation Pretreatment in Vortex-Friction Stir Lap Welding[J]. Crystals, 2023, 13(9): 1336.

• Liu X C, Ye T, Li Y Z, et al. Quasi-in-situ characterization of microstructure evolution in friction stir welding of aluminum alloy[J]. Journal of Materials Research and Technology, 2023, 25: 6380-6394.

• Liu X C, Li W T, Zhou Y Q, et al. Multiple effects of forced cooling on joint quality in coolant-assisted friction stir welding[J]. Journal of Materials Research and Technology, 2023, 25: 4264-4276.

• Wang, Q., Liu, C., Wang, H., Yin, K., Yu, Z., Wang, T., ... & Liu, X. (2023). Laser-Heat Surface Treatment of Superwetting Copper Foam for Efficient Oil–Water Separation. Nanomaterials, 13(4), 736.

• Liu X, Li W, Zhen Y, et al. Effect of Process Parameters on Weld Quality in Vortex-Friction Stir Welding of 6061-T6 Aluminum Alloy[J]. Materials, 2023, 16(2): 873.

• Liu X C, Wang Q, Pei X J, et al. Microstructural evolution of 6061-T6 aluminum alloy in vortex-friction stir welding[J]. Materials Characterization, 2023, 195: 112544.

• 刘小超, 倪中华, 崔远驰, 等. 基于工件与外部可消耗工具摩擦的焊接技术研究进展[J]. 焊接学报, 2022, 43(7): 14-27.

• Pei, X., Li, X., Zhao, S., Dong, P., Liu, X., & Xie, M. (2022). Low cycle fatigue evaluation of welded structures with arbitrary stress-strain curve considering stress triaxiality effect. International Journal of Fatigue, 162, 106969.

• Liu, X., Zhen,Y., Chen,H., Shen,Z. Study on process characteristics of friction stir welding based on vortex material flow using 6061-T6 aluminum alloy. International Journal of Advanced Manufacturing Technology, 2022, 119(7-8), pp. 5025–5034.

• Liu, X., Sun, Z. Numerical simulation of vortex- friction stir welding based on internal friction between identical materials. International Journal of Heat and Mass Transfer, 2022,185, 122418.

• Liu, X., Zhen, Y., He,X., Chen, H., Shen, Z. Vortex- friction stir welding process based on internalfriction between identical materials |基于同质摩擦的涡流搅拌摩擦焊工艺. Hangkong Xuebao/Acta Aeronautica et Astronautica Sinica, 2022, 43(2), 625012.

•  Chen, H., Zhao, S., Nai, X., Miao, L., Shen, Z., Liu, X., Cao, J. Controlledspreading of melted fillers and precision micro-brazing based on a micro-scalebinary cooperative complementary interface design strategy.(2020) Ceramics International, 47 (15), pp. 21433-21442.

• Shen, Z., Ding, Y., Guo, W., Liu, X. Li, W., Gerlich, A. Refill Friction Stir Spot Welding AlAlloy to Copper via Pure Metallurgical Joining Mechanism. Chinese Journal of Mechanical Engineering (English Edition), 2021, 34(1), 75.

• Shen, Z., Li, W., Cai, Z., Wu, L., Liu, X. Role of Sleeve Design on Weld Formation of Refill Friction Stir Spot Welded Dissimilar Al Alloys|套筒设计对异种铝合金回填式搅拌摩擦点焊接头成形的影响.Jixie Gongcheng Xuebao/Journal of Mechanical Engineering, 2021, 57(18).

•  Liu, X., Zhen, Y., Shen,Z., Chen, H., Li, W., Guo, W., Yue, Z. A Modified Friction Stir Welding Process Based on Vortex Material Flow. (2020) Chinese Journal of Mechanical Engineering(English Edition), 33 (1), 论文编号 90.

• Nagira, T., Liu, X.C., Ushioda, K., Fujii, H.Mechanism of grain structure development for pure Cu and Cu-30Zn with lowstacking fault energy during FSW. (2020) Science and Technology of Welding andJoining, 25 (8), pp. 669-678.

•  LIU, X.-C., ZHEN, Y.-Q., SUN, Y.-F., SHEN, Z.-K., CHEN,H.-Y., GUO, W., LI, W.-Y. Local inhomogeneity of mechanical properties in stirzone of friction stir welded AA1050 aluminum alloy. (2020) Transactions of Nonferrous Metals Society of China (English Edition), 30 (9), pp. 2369-2380.

• Chen, H., Ren, X.,Guo, W., Shen, Z., Liu, X., Cao, J. Effects of glass compositionand joining parameters on microstructural evolution and mechanical propertiesof Al2O3/Cu joints brazed with Bi2O3-B2O3-ZnO glass. (2020) Journal ofManufacturing Processes, 56, pp. 735-745.

• Liu, X., Sun, Y., Nagira,T., Ushioda, K., Fujii, H. Effect of Stacking Fault Energy on the Grain Structure Evolution of FCC Metals During Friction Stir Welding. (2020) Acta Metallurgica Sinica (English Letters), 33 (7), pp. 1001-1012. 

• Nagira, T., Liu,X.C., Ushioda, K., Fujii, H. Influences of temperature and Sn-addition onmicrostructural evolution of Ag during FSW. (2020) Science and Technology of Welding and Joining, 25 (3), pp. 198-207.

• Zhen, Y., Liu,X., Shen, Z., Chen, H. State-of-art of Experimental Characterization of Material Flow in Friction Stir Welding [搅拌摩擦焊材料流动的试验表征研究现状]. (2020) Jixie Gongcheng Xuebao/Journal of Mechanical Engineering, 56 (6), pp. 184-192.

• Shen, Z., Li,W.Y., Ding, Y., Hou, W., Liu, X.C., Guo, W., Chen, H.Y., Liu, X.,Yang, J., Gerlich, A.P. Material flow during refill friction stir spot weldeddissimilar Al alloys using a grooved tool. (2020) Journal of ManufacturingProcesses, 49, pp. 260-270.

• Ni, Y., Fu, L.,Shen, Z., Liu, X.C. Role of tool design on thermal cycling and mechanical properties of a high-speed micro friction stir welded 7075-T6aluminum alloy. (2019) Journal of Manufacturing Processes, 48, pp. 145-153.

• Nagira, T., Liu,X.C., Ushioda, K., Iwamoto, Y., Ano, G., Fujii, H. Role of annealingtwinning in microstructural evolution of high purity silver during frictionstir welding. (2019) Science and Technology of Welding and Joining, 24 (7), pp.644-651.

• Shen, Z., Ding,Y., Chen, J., Fu, L., Liu, X.C., Chen, H., Guo, W., Gerlich, A.P.Microstructure, static and fatigue properties of refill friction stir spotwelded 7075-T6 aluminium alloy using a modified tool. (2019) Science andTechnology of Welding and Joining, 24 (7), pp. 587-600.

• Chen, H., Ren, X.,Guo, W., Wan, M., Shen, Z., Liu, X., Feng, M. Microstructures andmechanical properties of brazed Al2O3/Cu joints with bismuth glass. (2019)Ceramics International, 45 (13), pp. 16070-16077.

• Guo, W., Fu, L.,He, P., Lin, T., Wan, M., Hou, J., Wu, Y., Liu, X., Shen, Z. Air-brazedAl2O3 joint with a novel bismuth glass. (2019) Ceramics International, 45 (12),pp. 15213-15222.

• Liu, X.C., Sun, Y.F.,Nagira, T., Ushioda, K., Fujii, H. Evaluation of dynamic development of grainstructure during friction stir welding of pure copper using a quasi in situmethod. (2019) Journal of Materials Science and Technology, 35 (7), pp.1412-1421.

• Liu, X.C., Sun, Y.F.,Nagira, T., Ushioda, K., Fujii, H. Strain rate dependent micro-textureevolution in friction stir welding of copper. (2019) Materialia, 6, 论文编号 100302.

• Liu, X.C., Sun, Y.F.,Nagira, T., Ushioda, K., Fujii, H. Experimental evaluation of strain and strainrate during rapid cooling friction stir welding of pure copper. (2019) Scienceand Technology of Welding and Joining, 24 (4), pp. 352-359.

• Guo, W., Fu, L.,He, P., Lin, T., Shen, Z., Liu, X.C., Wang, T., Wang, C.Low-temperature brazing of alumina ceramics with bismuth-borate glass in air.(2019) Materials Characterization, 149, pp. 158-164.

• Liu, X.C., Sun, Y.F.,Nagira, T., Ushioda, K., Fujii, H. Correction to: Microstructure evolution ofCu–30Zn during friction stir welding (Journal of Materials Science, (2018), 53,14, (10423-10441), 10.1007/s10853-018-2313-5). (2018) Journal of MaterialsScience, 53 (15), p. 11130.

• Liu, X.C., Sun, Y.F.,Nagira, T., Ushioda, K., Fujii, H. Microstructure evolution of Cu–30Zn duringfriction stir welding. (2018) Journal of Materials Science, 53 (14), pp.10423-10441.

• Liu, X.C., Sun, Y.F.,Nagira, T., Fujii, H. Investigation of temperature dependent microstructureevolution of pure iron during friction stir welding using liquid CO2 rapidcooling. (2018) Materials Characterization, 137, pp. 24-38.

• Liu, X.C., Sun, Y.F.,Morisada, Y., Fujii, H. Dynamics of rotational flow in friction stir welding ofaluminium alloys. (2018) Journal of Materials Processing Technology, 252, pp.643-651.

• Liu, X.C., Sun, Y.F.,Fujii, H. Clarification of microstructure evolution of aluminum during frictionstir welding using liquid CO2 rapid cooling. (2017) Materials and Design, 129,pp. 151-163.

• Liu, X.C., Wu, C.S.Elimination of tunnel defect in ultrasonic vibration enhanced friction stirwelding. (2016) Materials and Design, 90, pp. 350-358.

• Liu, X., Wu, C., Zhong,Y., Gao, S. Thermo-mechanical behaviors and microstructure characteristics ofultrasonic vibration enhanced friction stir welding. (2015) Jixie GongchengXuebao/Journal of Mechanical Engineering, 51 (22), pp. 22-28.

• Liu, X.C., Wu, C.S.Material flow in ultrasonic vibration enhanced friction stir welding. (2015)Journal of Materials Processing Technology, 225, pp. 32-44.

• Liu, X.C., Wu, C.S., Padhy,G.K. Improved weld macrosection, microstructure and mechanical properties of2024Al-T4 butt joints in ultrasonic vibration enhanced friction stir welding.(2015) Science and Technology of Welding and Joining, 20 (4), pp. 345-352.

• Liu, X., Wu, C., Padhy,G.K. Characterization of plastic deformation and material flow in ultrasonicvibration enhanced friction stir welding. (2015) Scripta Materialia, 102, pp.95-98.

• Shi, L., Wu,C.S., Liu, X.C. Modeling the effects of ultrasonic vibrationon friction stir welding. (2015) Journal of Materials Processing Technology,222, pp. 91-102.

• Liu, X., Wu, C. Effect ofultrasonic vibration on microstructure and mechanical properties of frictionstir welded joint of 6061-T4 aluminum alloy. (2014) Hanjie Xuebao/Transactionsof the China Welding Institution, 35 (1), pp. 49-53.

• Liu, X., Wu, C., Rethmeier,M., Pittner, A. Mechanical properties of 2024-T4 aluminium alloy joints inultrasonic vibration enhanced friction stir welding. (2013) China Welding(English Edition), 22 (4), pp. 8-13.

• Liu, X., Wu, C., Zhang,H., Chen, M. Effect of ultrasonic vibration on the friction stir weld qualityof aluminium alloy. (2013) China Welding (English Edition), 22 (3), pp.12-17.