重庆大学材料学院材料加工工程系吴桂林教授

shibai

姓名 吴桂林
性别        男        
生年        1975.5        
籍贯        河南
职称        教授        
学历        研究生        
学位        工学博士
部门        材料加工工程系
email        wugl@cqu.edu.cn
电话        
地址        重庆市沙坪坝区沙正街174号材料学院        
邮编        400045


学习工作经历：
  2012－    重庆大学材料学院，特聘研究员（百人计划）
  2010－2012  北京理工大学材料学院，副教授
  2007－2009  德国马普钢铁研究所(Max-Planck-Institute for Iron Research)，研究员
  2004－2007  丹麦Risoe国家实验室，博士后
  1999－2003  清华大学材料科学与工程系，工学博士
  1997－1999  哈尔滨工业大学材料学院，工学硕士


学术专长：
  材料基因工程
  纳米结构金属的强韧化机理与结构稳定性
  金属材料的形变、再结晶和织构的理论与应用
  材料微观结构和晶体取向定量表征的新原理与新方法


主要研究方向：
先进材料基因的表征与调控，材料基因的三维、原位、微纳尺度高通量表征技术
纳米结构材料的力学性能、强韧化机理，包括单相、双相、颗粒强化与固溶强化等金属材料
纳米金属材料的微观结构稳定性机理，包括力学稳定性、热稳定性和三维界面迁移机制
金属材料的塑性变形与再结晶机理，包括三维微观结构、晶体塑性、再结晶动力学和形变与再结晶织构
材料微观结构和取向的三维定量表征与数据分析技术，包括TEM、EBSD和同步辐射X射线技术
1) 透射电子显微镜取向显微术，包括全自动的二维取向显微术和三维透射电子显微镜技术
2) 金属形变和再结晶的EBSD的二维、三维与原位研究
3) 金属形变与再结晶的三维同步辐射X射线原位研究


科研项目：
  2016-2021，先进材料多维多尺度高通量表征技术：微纳尺度多参量高通量表征技术，国家重点研发计划专项，负责人
2016-2021，先进材料多维多尺度高通量表征技术：全尺度三维高通量表征技术，国家重点研发计划专项，骨干
  2016-2017， Mapping the percolation of plastic strain at the elastic-plastic transition in fine-grained aluminum，美国APS合作研究项目，参加
  2015-2020，先进材料基金组表征与调控学科创新引智基地（“111”引智基地），国家外专局，骨干
  2015-2020，金属材料的形变、相变与强韧化研究，国家自然科学基金创新性群体项目，骨干
  2015-2018，纳米金属微观结构不稳定性机理的三维研究，国家自然科学基金面上基金，主持
  2014-2018，三维透射电子显微镜，国家重大科研仪器设备研制专项，骨干
  2013-2014，X-Ray Microdiffraction Study of Nucleation Mechanisms during Annealing of Deformed Nickel，美国APS合作研究项目，项目PI
  2012-2015，中丹纳米金属中心：跨尺度的结构性能研究，国家自然科学基金国际合作专项，参加
  2011-2013，基于高取向分辨EBSD技术的金属再结晶机理研究，国家自然科学基金青年基金，主持
  2007-2009，透射电子显微镜自动取向显微术，德国马普学会（Max-Planck Association），负责
  2004-2007，金属四维结构中心，丹麦国家基础研究基金，参加


论文及专著：
主要论文：
C.L. Xu, Y.B. Zhang, A.W. Godfrey, G.L. Wu, W.J. Liu, J.Z. Tischler, Q. Liu, D. Juul Jensen. Direct observation of nucleation in the bulk of an opaque sample. Scientific Reports, 2017, DOI: 10.1038/srep42508.
Q. Chen, D. Y. Shu, J. Lin, Y. Wu, X. S. Xia, S. H. Huang, Z. D. Zhao, O. V. Mishin, G. L. Wu. Evolution of Microstructure and Texture in Copper during Repetitive Extrusion-Upsetting and Subsequent Annealing. Journal of Materials Science and Technology. 2017, DOI: 10.1016/j.jmst.2017.03.003.
Dong Yue Xie , Jiawei Yan, Yangxin Li, Dong Qiu, Guilin Wu, Xiaodong Wang, Bin Chen, Yao Shen, Guo-zhen Zhu. Ordered stacking faults within nanosized silicon precipitates in aluminum alloy. Materials Letters, 190 (2017), 225-228. DOI:10.1016/j.matlet.2017.01.023
Changfa Guo, Xuan Luo, Yunchang Xin, Guilin Wu, Qing Liu. Obtaining high strength and high plasticity in a Mg-3Al-1Zn plate using pre-tension and annealing treatments. Journal of Alloy and Compound, 704 (2017), 406-412.
C.L. Xu, Y.B. Zhang, F.X. Lin, G.L. Wu, Q. Liu, D. Juul Jensen. Statistical Analysis of Nucleation at Hardness Indentations in High Purity Aluminum. Metallurgy & Materials Transaction A, 47 (2016) 5863-5870. DOI:10.1007/s11661-016-3704-3.
Xiaolei Wu, Muxin Yang, Fuping Yuan, Guilin Wu, Yujie Wei, Xiaoxu Huang, Yuntian Zhu. Heterogeneous lamella structure unites ultrafine-grain strength with coarse-grain ductility. Proceeding of the National Academy of Science (PNAS), USA 112 (2015) 14501-14505 .
G.L. Wu, H.S. Ubhi, M. Petrenec, D. Juul Jensen. In-situ observations of nucleation in Al-0.1Mg. IOP Conf. Series: Materials Science and Engineering 89 (2015) 012051.
C.L. Xu, Y.B. Zhang, G.L. Wu, Q. Liu, D. Juul Jensen. Nucleation at hardness indentations in cold rolled Al. IOP Conf. Series: Materials Science and Engineering 89 (2015) 012054.
J.Q. Wu, S. Huang, Y.H. Wang, G.L. Wu, N. Hansen, X. Huang. Microstructure and mechanical properties of ARB processed Mg-3%Gd alloy. IOP Conf. Series: Materials Science and Engineering 89 (2015) 012052.
X.R. Li, A. Wakeel, T.L. Huang, G.L. Wu, X. Huang. Recrystallization textures and microstructures of Al-0.3%Cu alloy after deformation to high strains. IOP Conf. Series: Materials Science and Engineering 89 (2015) 012032.
T.L. Huang, G.L. Wu, X. Huang, N. Hansen. Characterization of Si particles and their effects on and recrystallization in a nanostructured cold rolled Al-1%Si alloy. IOP Conf. Series: Materials Science and Engineering 89 (2015) 012028.
Z.Q. Feng, Y.X. Chen, G.L. Wu, Y.Q. Yang. Precession electron diffraction assisted orientation mapping of gradient nanostructure in a Ni-based superalloy. IOP Conf. Series: Materials Science and Engineering 89 (2015) 012023.
Y.C. Xin, H. Zhou, G.L. Wu, H.H. Yu, A. Chapuis, Q. Liu. A twin size effect on thermally activiated twin boundary migration in a Mg-3Al-1Zn alloy. Materials Science and Engineering: A 2015;639:534-539.
A. Wakeel, T.L. Huang, G.L. Wu, O.V. Mishin, X. Huang. Development of a strong Goss texture during annealing of a heavily rolled Al-0.3% Cu alloy. IOP Conf. Series: Materials Science and Engineering, 82 (2015) 012050.
X.R. Li, C.L. Xu, T.L. Huang, Y. Luo, G.L. Wu, Q. Liu and X. Huang. Effects of Thermomechanical Processing on the Recrystallization Texture and Grain Size of Al-1%Si Sputtering Target Material. IOP Conf. Series: Materials Science and Engineering, 82 (2015) 012065.
C.L. Xu, S. Huang, Y.B. Zhang, G.L. Wu, Q. Liu, D. Juul Jensen. Orientations of recrystallization nuclei developed in columnar-grained Ni at triple junctions. IOP Conf. Series: Materials Science and Engineering, 82 (2015) 012044.
T.L. Huang, C. Li, G. Wu, T.B. Yu, Q. Liu, N. Hansen, X. Huang. Particle stabilization of plastic flow in nanostructured Al-1%Si Alloy. Journal of Materials Science, 49(2014), 6667.
G.L. Wu. Recrystallization microstructure and texture of highly strained commercial purity aluminium alloy. 2014, Materials Science Forum, 783-786(2014), 282-287.
T.L. Huang, G.L. Wu, Q. Liu, X. Huang. Effectof second phase particles on the tensile stability of a nanostructured Al-1%Si alloy. Materials Science Forum, 783-786 (2014), 2629-2634.
Y.L. Chen, T.L. Huang, X. Gong, G.L. Wu, Q. Liu, X. Huang. Formation of a random recrystallization texture in heavily cold rolled and annealed Al-1%Si alloy. Materials Science Forum, 753 (2013), 243-246.
T.K. Liu, G.L. Wu, C.K. Liu, Z.H. Nie, T. Ungár, Y. Ren, Y.D. Wang. Interface coherency strain relaxation due to plastic deformation in single crystal Ni-base superalloys. Materials Science and Engineering A, 568 (2013): 83-87.
G.L. Wu, D. Juul Jensen. In-situ Measurement of Annealing Kinetics of Individual Bulk Grains in Nanostructured Aluminium. Philosophical Magazine A, 92 (2012): 3381-3391
B.F. Luan, L.J. Chai, G.L. Wu, H.B. Yu, J.W. Chen, Q. Liu. Twinning during β → α slow cooling in a zirconium alloy. Scripta Materialia, 2012, 67 (2012): 716-719.
B.T. Zhou, T.R. Thomas, G.L. Wu, S. Zaefferer, T.K. Lee, K.C. Liu. In-situ Synchrotron Characterization of Melting, Dissolution, and Resolidification in Lead-Free Solders. Journal of Electronic Materials, 41 (2012): 262-272.
N Li, YD Wang, R. Lin Peng, X. Sun, P.K. Liaw, G.L. Wu, L. Wang, H.N. Cai. Localized Amorphism after High-strain-rate Deformation in TWIP Steel.Acta Materialia 59 (2011): 6369-6377.
G.L. Wu, A. Godfrey, G. Winther, D. Juul Jensen, Q. Liu. Evolution of Orientations and Deformation Structures within Individual Grains in Cold Rolled Columnar-Grained Nickel. Acta Materialia, 61 (2011): 5451-5461.
G.L. Wu, S. Zaefferer. Advances in TEM Orientation Microscopy by combination of dark field conical scanning and improved template matching. Ultramicroscopy, 109 (2009): 1317-1325.
R.A. Vandermeer, G.L. Wu, D. Juul Jensen. Microstructural Path Model and the Strain Dependence of Recrystallisation in Commercial Aluminium. Materials Science and Technology, 25 (2009): 403-406.
S. Zaefferer and G.L. Wu. Development of a TEM Based Orientation Microscopy System. Application of Texture Analysis, 2009 (201): 221-228.
G.L. Wu, D Juul Jensen. Automatic Determination of Recrystallisation Parameters by EBSD Mapping. Materials Characterization, 59 (2008): 794-800.
G.L. Wu, D Juul Jensen. Orientations of Recrystallisation Nuclei Developed in Columnar-Grained Ni at Triple Junctions and a High Angle Grain Boundary. Acta Materialia, 55 (2007): 4955-4964.
G. Wu, D. Juul Jensen. Recrystallisation Kinetics of Aluminium (AA1200) Cold Rolled to True Strain of 2. Materials Science and Technology, 21 (2005): 1407-1411.
G.L.Wu and D. Juul Jensen. Effect of Annealing Temperature on Recrystallisation in Al (AA1200) Cold Rolled to a True Strain of 4. Materials Science Forum, 558-559 (2007): 395-400.
Z. Sukosd, K. Hannesson, G.L. Wu and D. Juul Jensen. 3D Spatial Distribution of Nuclei in 90% Cold Rolled Aluminium. Materials Science Forum, 558-559 (2007): 345-350.
G.L. Wu, A. Godfrey, D. Juul Jensen and Q. Liu. The orientation of Nuclei at Triple Junctions in Deformed Columnar Grain Ni. Materials Science Forum, 495-497 (2005): 1309-1314.
G.L. Wu, A. Godfrey, D. Juul Jensen, Q Liu. Deformation Strain Inhomogeneity in Columnar Grain Nickel. Scripta Materialia, 53 (2005): 565-570.
G.L. Wu, W. Liu, A. Godfrey and Q. Liu. Experimental Observation and Modelling of the Orientation Evolution of Individual Grains in Columnar Grain Ni during Cold Rolling.Acta Metallurgica Sinica, 40 (2004): 785-790.
G.L. Wu, W. Liu, A. Godfrey and Q. Liu. Microstructural Evolution of Columnar Grain Al during Cold Rolling I: Macroscopic Subdivision. Acta Metallurgica Sinica, 40 (2004): 699-708.
G.L. Wu, W Liu, A.Godfrey and Q. Liu. Microstructural Evolution of Columnar Grain Al during Cold Rolling II: Microscopic Subdivision. Acta Metallurgica Sinica, 40 (2004): 709-715.
F. Yan, K. Wu, G.L. Wu, B.L. Lee and M. Zhao. Superplastic Deformation Behavior of a 19.7 vol. % β-SiCW/ZK60 Composites. Materials Letters, 57 (2003): 1992-1996.
A. Godfrey, G.L. Wu and Q. Liu. Characterisation of Orientation Noise during EBSP Investigation of Deformed Samples. Materials Science Forum, 408-412 (2002): 221-226.
G.L. Wu, A. Godfrey and Q. Liu. Texture and Deformation Structure Evolution during Rolling of Individual Grains of Columnar Grain Nickel. Materials Science Forum, 408-412 (2002): 589-594.
G.L. Wu, A. Godfrey, W. Liu and Q. Liu. Macroscopic Subdivision of Columnar Grain Aluminium with {001}<uv0> Orientations Following Low Strain Deformation. Scripta Materialia, 45 (2001): 1117-1122.
G. Wen, G.L. Wu, T.C. Lei, Y. Zhou and Z.X. Guo. Co-Enhanced SiO2-BN Ceramics for High-Temperature Dielectric Applications. Journal of the European Ceramic Society, 20 (2000): 1923-1928.

会议论文：
Q.Y. Dong, T.L. Huang, G.L. Wu, X. Huang. Enhanced temperature dependence of work hardening in an ultra-fine grained brass. In 35rd Ris&oslash; International Symposium on Materials Science: New Frontiers of Nanometals. 2014, Roskilde, 259-265.
A.Wakeel, T.L. Huang, G.L. Wu, T.B. Yu, N. Hansen and X. Huang. Structure and mechanical properties of nanostructured Al-0.3%Cu alloy. In 35rd Ris&oslash; International Symposium on Materials Science: New Frontiers of Nanometals. 2014, Roskilde, 463-469.
G.L. Wu and D. Juul Jensen. Orientation Changes during Annealing of Nanotructured Aluminium. In 33rd Ris&oslash; International Symposium on Materials Science: Nanometals – Status and Perspective. 2012, Roskilde, 365-372.

邀请报告：
吴桂林. 金属形核机理的三维与原位研究. 新材料国际发展趋势高层论坛-优秀青年科学家论坛. 2016年9月24日. 南京.（优秀青年报告奖）
G.L. Wu. Mechanical properties of ARB processed Mg alloys with heterogeneous laminate structures. THERMEC2016(2016), May 28 - Jun.2, Graz, Australia
G.L. Wu, X. Huang. Microstructur and mechanical properties of ARB processed Mg-3%Gd alloy. MS&T2015 (2015), Oct.4-8, Columbus, USA.
A. Wakeel, T.L. Huang, G.L. Wu, X. Huang. Mechanical properties and thermal stability of nanostructured Al-0.3%Cu alloy. TMS 2014 (2014), Feb 16-20, San Diego, USA.
T.L. Huang, C. Li, G.L. Wu, T.B. Yu, Q. Liu, N. Hansen, X. Huang. Particle stabilization of plastic flow in nanostructured Al-1%Si Alloy. TMS 2014 (2014), Feb 16-20, San Diego, USA.
G.L. Wu. Recrystallization microstructure and texture of highly strained commercial purity aluminium alloy. THERMEC2013 (2013), Dec 2-6, Las Vegas, USA.
T.L.Huang, G.L. Wu, Q. Liu, X. Huang. Effect of second phase particles on the tensile instability of a nanostructured Al-1%Si alloy. THERMEC2013 (2013), Dec 2-6, Las Vegas, USA.
G.L. Wu and Q. Liu. Study the Effects of Grain Boundaries and Grain Orientation on the Deformation and Nucleation of Metals by Using Columnar Grained Samples. 19th Plasticity (2013), Jan. 2013, Bahamas.
吴桂林. EBSD技术对金属形变与再结晶的定量表征. 2012年全国电子显微学会, 2012.9, 成都.


表彰及奖励：
2014年，重庆市自然科学一等奖，立方金属塑性变形机理的定量研究，排名第二


科研团队：
团队每年招收博士生2-3名，硕士生4-5名，欢迎有兴趣的同学加入。
团队招聘博士后1-2名，研究方向：透射电镜三维重构技术，图像处理技术，纳米材料的强韧化，材料力学性能模拟。由学校和团队共同资助，提供具有较大竞争力的薪酬。

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Acta Materialia：超细晶粒Al-0.3%Cu合金强化机制和Hall-Petch应力

多晶金属或合金的流变应力和晶粒尺寸符合Hall-Petch关系。但当晶粒尺寸达到微米或者亚微米级别时，Hall-Petch关系式中的k（ε）不再是一个常数，此时的强化机制不再是晶界强化，该强化机制为可动位错密度的降低或位错源强度的提高。目前，关于该机制研究相对较少。

近日，重庆大学的黄天林副教授和吴桂林教授在Acta Materialia发表最新研究成果“Strengthening Mechanisms and Hall-Petch Stress of ultrafine grained Al-0.3%Cu”。在该文中，研究了Al-0.3%Cu合金的晶粒尺寸达到微米或亚微米级别时其性能的变化，并分析了其强化机制和对流变应力的影响。