Assistant Professor

2013-2019 Ph.D., Department of Mechanical Engineering, Tsinghua University, Beijing

2007-2010 M.E., Special Welding Material Research Center, Luoyang Ship Material Research Institute, Luoyang

2002-2006 B.E., School of material and metallurgy, Northeastern University, Shenyang

2021/05-Present Assistant Researcher, Department of Mechanical Engineering, Tsinghua University

2019/04-2021/04 Post-doctor, Department of Mechanical Engineering, Tsinghua University

2010/09-2013/07 Engineer, Special Welding Material Research Center, Luoyang Ship Material Research Institute

2006/09-2007/07 Assistant Engineer, Petrochemical Equipment Manufacturing Factory, China Petroleum First Construction Company

Multi-scale simulation of materials and manufacturing processes; Development and microstructure design of special materials(e.g. superalloy, free cutting stainless steels, special welding consumables, etc.); Magnetic field assisted material processing and welding technology.

Representative papers:

[1] Qu Liu, Qing-xian Ma, Gao-qiang Chen, Xiong Cao, Shuai Zhang, Ji-luan Pan, Gong Zhang, Qing-yu Shi*. Enhanced corrosion resistance of AZ91 magnesium alloy through refinement and homogenization of surface microstructure by friction stir processing [J]. Corrosion science, 2018, 138: 284-296.

[2] Qu Liu, Gao-qiang Chen, Shen-bo Zeng,Shuai Zhang, Fei Long, Qing-yu Shi*. The corrosion behavior of Mg-9Al-xRE magnesium alloy modified by friction stir processing [J]. Journal of alloys and compounds, 2021, 851:156835.

[3] Long Fei; Chen Gaoqiang; Zhou Mengran; Shi Qingyu; Liu Qu*. Simultaneous enhancement of mechanical properties and corrosion resistance of As-cast Mg-5Zn via microstructural modification by friction stir Processing [J]. Journal of Magnesium and Alloys, 2023, 11(6): 1931–1943.

[4] Long F, Liu Q, Chen G, et al. Improved corrosion resistance achieved in a friction stir processed Mg-5Zn-0.3Ca alloy with fragmented Precipitates [J]. Corrosion Science, 2022, 208: 110675.

[5] Li X, Liu Q, Li S, et al. Oxidation Behaviors of Different Grades of Ferritic Heat Resistant Steels in High-Temperature Steam and Flue Gas Environments [J]. Acta Metallurgica Sinica (English Letters), 2021, 35(7): 1103–1116.

[6] Xiao X, Liu Q, Hu M, et al. Effect of Welding Sequence and the Transverse Geometry of the Weld Overlay on the Distribution of Residual Stress in the Weld Overlay Repair of T23 Tubes [J]. Metals, 2021, 11(4): 568.

[7] Han C, Liu Q, Cai Z, et al. Effect of Solidification Segregation on Microstructure and Mechanical Properties of a Ni-Cr-Mo-V Steel Weld Metal [J]. Metallurgical and Materials Transactions A, 2022, 53(4): 1394–1406.

[8] Wang Y, Liu Q, Li K, et al. Internal nitridation during creep of IN617 Superalloy [J]. Corrosion Science, 2022, 209: 110763.

[9] Qian C, Liu Q, Xiong X, et al. Mechanism for magnetic field induced structural relaxation and accompanying fracture toughness improvement of the thermal spraying Coating [J]. Materials & Design, 2022, 223: 111113.

[10] Sun Q, Liu Q, Li X, et al. Near-threshold fatigue crack growth behavior of the weld metal and heat-affected zone in an ex-service CrMoV steel Joint [J]. International Journal of Fatigue, 2022, 164: 107175.

[11] Han C, Liu Q, Cai Z, et al. Effect of tempering heat treatment on the microstructure and impact toughness of a Ni–Cr–Mo–V steel weld Metal [J]. Materials Science and Engineering: A, 2022, 850: 143521.

[12] Li S, Liu Q, Rui S-S, et al. Fatigue crack initiation behaviors around defects induced by welding thermal cycle in superalloy IN617B [J]. International Journal of Fatigue, 2022, 158: 106745.

[13] Wang, Xizi; Zhang, Xu; Liu, Qu*; Qian, Chengkai; Cai, Zhipeng. Enhanced Low Cycle Fatigue Properties of Ti-6Al-4V Alloy by Post-treatment Technology of Pulse High-Intensity Magnetic Field [J]. Journal of Materials Engineering and Performance, 2023, 32(22): 10029–10038.

[14] He, Guangzhi; Qian, Chengkai; Cai, Zhipeng; Li, Kejian; Liu, Qu*; Yan, Jianfeng*. Magnetic Field‐Assisted Laser Shock Peening of Ti6Al4V Alloy [J]. Advanced Engineering Materials, 2023, 25(10).

[15] Wang Y, Liu Q, Cai Z, et al. Nitride precipitation and formation in IN617 superalloy during Creep [J]. Journal of Alloys and Compounds, 2023, 948: 169709.

[16] Li, Zheng; Li, Kejian; Qian, Chengkai; Wang, Dexin; Ji, Wen; Wu, Yao; Cai, Zhipeng; Liu, Qu*. Effect of pulsed magnetic field on retained austenite of quenched 8Cr4Mo4V steel under cryogenic Condition [J]. Journal of Materials Research and Technology, 2023, 23: 5004–5015.

[17] Han C, Liu Q, Cai Z, et al. The effect of microstructure on the fatigue crack growth behavior of Ni-Cr-Mo-V steel weld Metal [J]. International Journal of Fatigue, 2023, 176: 107859.

[18] Qian C-K, Liu Q, Wang H, et al. Interface strengthening for thermal sprayed WC-10Co4Cr coating subjected to pulsed magnetic Treatment [J]. Rare Metals, 2023, 43(2): 780–795.

[19] Wang D, Liu Q, Qian C, et al. Mechanistic investigation of the interface crystallization behavior of Amorphous-Co bonding phase under thermal conditions and its impact on cohesive strength via new phase Precipitation [J]. Applied Surface Science Advances, 2024, 19: 100565.

[20] Qian C, Liu Q, Li K, et al. Electrochemical corrosion behavior variation of WC-10Co4Cr coating subjected to different magnetic treatments and its Mechanism [J]. Corrosion Science, 2024, 229: 111883.

[21] Zhang T, Liu Q, Li X, et al. The Influence of Groove Geometry on the Creep Fracture Behavior of Dissimilar Metal Welds between Ferritic Heat-Resistant Steels and Nickel-Based Alloys [J]. Metals, 2024, 14(4): 382.

[22] Jun Cheng;Kejian Li;Zhengang Yang;Xin Huo;Manjie Fan;Songlin Li;Shengzhi Li;Qu Liu*;Qingxian Ma;Zhipeng Cai. Investigation of Precipitation Behavior of a Novel Ni-Fe-Based Superalloy during High-Temperature Aging Treatment [J]. Materials, 2024, 17(19): 4875.

Representative patent:

[1] CN Patent No. ZL201110435334.8:“A wear-resistant core welding wire for coal grinding rollers”issued to Qu Liu, Xiaolian Wang, Mingliang Ma, filed December 22, 2011.

[2] CN Patent No. ZL201010603609.X:“A high hardness carbon dioxide gas shielded reactor welding flux cored wire”，issued to Qu Liu, Xiaolian Wang, filed December 24, 2010.

[3] CN Patent No. ZL201110283403.8:“A sintered flux for submerged arc welding of chromium nickel austenitic stainless steel”,issued to Xiaolian Wang, Qu Liu, Qingyun Wang, filed September 22, 2011.